// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Rockchip USBDP Combo PHY with Samsung IP block driver
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*
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* Copyright (C) 2021 Rockchip Electronics Co., Ltd
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*/
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#include <linux/bitfield.h>
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <linux/iopoll.h>
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#include <linux/kernel.h>
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#include <linux/mfd/syscon.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/reset.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/typec_dp.h>
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#include <linux/usb/typec_mux.h>
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#include <linux/phy/phy-rockchip-usbdp.h>
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#define BIT_WRITEABLE_SHIFT 16
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enum {
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DP_BW_RBR,
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DP_BW_HBR,
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DP_BW_HBR2,
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DP_BW_HBR3,
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};
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enum {
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UDPHY_MODE_NONE = 0,
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UDPHY_MODE_USB = BIT(0),
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UDPHY_MODE_DP = BIT(1),
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UDPHY_MODE_DP_USB = BIT(1) | BIT(0),
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};
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struct udphy_grf_reg {
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unsigned int offset;
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unsigned int bitend;
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unsigned int bitstart;
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unsigned int disable;
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unsigned int enable;
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};
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struct udphy_grf_cfg {
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/* u2phy-grf */
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struct udphy_grf_reg bvalid_phy_con;
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struct udphy_grf_reg bvalid_grf_con;
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/* usb-grf */
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struct udphy_grf_reg usb3otg0_cfg;
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struct udphy_grf_reg usb3otg1_cfg;
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/* usbdpphy-grf */
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struct udphy_grf_reg low_pwrn;
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struct udphy_grf_reg rx_lfps;
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};
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struct udphy_vogrf_cfg {
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/* vo-grf */
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struct udphy_grf_reg hpd_trigger;
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};
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struct dp_tx_drv_ctrl {
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u32 trsv_reg0204;
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u32 trsv_reg0205;
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u32 trsv_reg0206;
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u32 trsv_reg0207;
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};
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struct rockchip_udphy;
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struct rockchip_udphy_cfg {
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/* resets to be requested */
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const char * const *rst_list;
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int num_rsts;
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struct udphy_grf_cfg grfcfg;
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struct udphy_vogrf_cfg vogrfcfg[2];
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const struct dp_tx_drv_ctrl (*dp_tx_ctrl_cfg[4])[4];
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const struct dp_tx_drv_ctrl (*dp_tx_ctrl_cfg_typec[4])[4];
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int (*combophy_init)(struct rockchip_udphy *udphy);
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int (*dp_phy_set_rate)(struct rockchip_udphy *udphy,
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struct phy_configure_opts_dp *dp);
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int (*dp_phy_set_voltages)(struct rockchip_udphy *udphy,
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struct phy_configure_opts_dp *dp);
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int (*hpd_event_trigger)(struct rockchip_udphy *udphy, bool hpd);
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int (*dplane_enable)(struct rockchip_udphy *udphy, int dp_lanes);
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int (*dplane_select)(struct rockchip_udphy *udphy);
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};
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struct rockchip_udphy {
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struct device *dev;
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struct regmap *pma_regmap;
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struct regmap *u2phygrf;
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struct regmap *udphygrf;
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struct regmap *usbgrf;
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struct regmap *vogrf;
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struct typec_switch *sw;
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struct typec_mux *mux;
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struct mutex mutex; /* mutex to protect access to individual PHYs */
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/* clocks and rests */
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int num_clks;
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struct clk_bulk_data *clks;
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struct clk *refclk;
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struct reset_control **rsts;
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/* PHY status management */
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bool flip;
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bool mode_change;
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u8 mode;
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u8 status;
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/* utilized for USB */
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bool hs; /* flag for high-speed */
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/* utilized for DP */
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struct gpio_desc *sbu1_dc_gpio;
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struct gpio_desc *sbu2_dc_gpio;
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u32 lane_mux_sel[4];
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u32 dp_lane_sel[4];
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u32 dp_aux_dout_sel;
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u32 dp_aux_din_sel;
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bool dp_sink_hpd_sel;
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bool dp_sink_hpd_cfg;
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u8 bw;
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int id;
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/* PHY const config */
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const struct rockchip_udphy_cfg *cfgs;
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};
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static const struct dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_rbr_hbr[4][4] = {
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/* voltage swing 0, pre-emphasis 0->3 */
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{
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{ 0x20, 0x10, 0x42, 0xe5 },
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{ 0x26, 0x14, 0x42, 0xe5 },
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{ 0x29, 0x18, 0x42, 0xe5 },
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{ 0x2b, 0x1c, 0x43, 0xe7 },
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},
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/* voltage swing 1, pre-emphasis 0->2 */
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{
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{ 0x23, 0x10, 0x42, 0xe7 },
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{ 0x2a, 0x17, 0x43, 0xe7 },
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{ 0x2b, 0x1a, 0x43, 0xe7 },
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},
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/* voltage swing 2, pre-emphasis 0->1 */
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{
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{ 0x27, 0x10, 0x42, 0xe7 },
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{ 0x2b, 0x17, 0x43, 0xe7 },
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},
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/* voltage swing 3, pre-emphasis 0 */
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{
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{ 0x29, 0x10, 0x43, 0xe7 },
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},
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};
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static const struct dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_rbr_hbr_typec[4][4] = {
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/* voltage swing 0, pre-emphasis 0->3 */
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{
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{ 0x20, 0x10, 0x42, 0xe5 },
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{ 0x26, 0x14, 0x42, 0xe5 },
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{ 0x29, 0x18, 0x42, 0xe5 },
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{ 0x2b, 0x1c, 0x43, 0xe7 },
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},
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/* voltage swing 1, pre-emphasis 0->2 */
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{
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{ 0x23, 0x10, 0x42, 0xe7 },
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{ 0x2a, 0x17, 0x43, 0xe7 },
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{ 0x2b, 0x1a, 0x43, 0xe7 },
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},
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/* voltage swing 2, pre-emphasis 0->1 */
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{
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{ 0x27, 0x10, 0x43, 0x67 },
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{ 0x2b, 0x17, 0x43, 0xe7 },
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},
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/* voltage swing 3, pre-emphasis 0 */
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{
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{ 0x29, 0x10, 0x43, 0xe7 },
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},
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};
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static const struct dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_hbr2[4][4] = {
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/* voltage swing 0, pre-emphasis 0->3 */
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{
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{ 0x21, 0x10, 0x42, 0xe5 },
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{ 0x26, 0x14, 0x42, 0xe5 },
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{ 0x26, 0x16, 0x43, 0xe5 },
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{ 0x2a, 0x19, 0x43, 0xe7 },
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},
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/* voltage swing 1, pre-emphasis 0->2 */
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{
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{ 0x24, 0x10, 0x42, 0xe7 },
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{ 0x2a, 0x17, 0x43, 0xe7 },
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{ 0x2b, 0x1a, 0x43, 0xe7 },
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},
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/* voltage swing 2, pre-emphasis 0->1 */
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{
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{ 0x28, 0x10, 0x42, 0xe7 },
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{ 0x2b, 0x17, 0x43, 0xe7 },
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},
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/* voltage swing 3, pre-emphasis 0 */
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{
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{ 0x28, 0x10, 0x43, 0xe7 },
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},
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};
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static const struct dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_hbr3[4][4] = {
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/* voltage swing 0, pre-emphasis 0->3 */
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{
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{ 0x21, 0x10, 0x42, 0xe5 },
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{ 0x26, 0x14, 0x42, 0xe5 },
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{ 0x26, 0x16, 0x43, 0xe5 },
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{ 0x29, 0x18, 0x43, 0xe7 },
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},
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/* voltage swing 1, pre-emphasis 0->2 */
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{
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{ 0x24, 0x10, 0x42, 0xe7 },
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{ 0x2a, 0x18, 0x43, 0xe7 },
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{ 0x2b, 0x1b, 0x43, 0xe7 }
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},
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/* voltage swing 2, pre-emphasis 0->1 */
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{
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{ 0x27, 0x10, 0x42, 0xe7 },
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{ 0x2b, 0x18, 0x43, 0xe7 }
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},
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/* voltage swing 3, pre-emphasis 0 */
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{
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{ 0x28, 0x10, 0x43, 0xe7 },
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},
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};
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static const struct reg_sequence rk3588_udphy_24m_refclk_cfg[] = {
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{0x0090, 0x68}, {0x0094, 0x68},
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{0x0128, 0x24}, {0x012c, 0x44},
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{0x0130, 0x3f}, {0x0134, 0x44},
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{0x015c, 0xa9}, {0x0160, 0x71},
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{0x0164, 0x71}, {0x0168, 0xa9},
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{0x0174, 0xa9}, {0x0178, 0x71},
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{0x017c, 0x71}, {0x0180, 0xa9},
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{0x018c, 0x41}, {0x0190, 0x00},
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{0x0194, 0x05}, {0x01ac, 0x2a},
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{0x01b0, 0x17}, {0x01b4, 0x17},
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{0x01b8, 0x2a}, {0x01c8, 0x04},
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{0x01cc, 0x08}, {0x01d0, 0x08},
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{0x01d4, 0x04}, {0x01d8, 0x20},
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{0x01dc, 0x01}, {0x01e0, 0x09},
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{0x01e4, 0x03}, {0x01f0, 0x29},
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{0x01f4, 0x02}, {0x01f8, 0x02},
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{0x01fc, 0x29}, {0x0208, 0x2a},
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{0x020c, 0x17}, {0x0210, 0x17},
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{0x0214, 0x2a}, {0x0224, 0x20},
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{0x03f0, 0x0a}, {0x03f4, 0x07},
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{0x03f8, 0x07}, {0x03fc, 0x0c},
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{0x0404, 0x12}, {0x0408, 0x1a},
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{0x040c, 0x1a}, {0x0410, 0x3f},
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{0x0ce0, 0x68}, {0x0ce8, 0xd0},
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{0x0cf0, 0x87}, {0x0cf8, 0x70},
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{0x0d00, 0x70}, {0x0d08, 0xa9},
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{0x1ce0, 0x68}, {0x1ce8, 0xd0},
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{0x1cf0, 0x87}, {0x1cf8, 0x70},
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{0x1d00, 0x70}, {0x1d08, 0xa9},
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{0x0a3c, 0xd0}, {0x0a44, 0xd0},
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{0x0a48, 0x01}, {0x0a4c, 0x0d},
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{0x0a54, 0xe0}, {0x0a5c, 0xe0},
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{0x0a64, 0xa8}, {0x1a3c, 0xd0},
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{0x1a44, 0xd0}, {0x1a48, 0x01},
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{0x1a4c, 0x0d}, {0x1a54, 0xe0},
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{0x1a5c, 0xe0}, {0x1a64, 0xa8}
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};
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static const struct reg_sequence rk3588_udphy_26m_refclk_cfg[] = {
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{0x0830, 0x07}, {0x085c, 0x80},
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{0x1030, 0x07}, {0x105c, 0x80},
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{0x1830, 0x07}, {0x185c, 0x80},
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{0x2030, 0x07}, {0x205c, 0x80},
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{0x0228, 0x38}, {0x0104, 0x44},
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{0x0248, 0x44}, {0x038C, 0x02},
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{0x0878, 0x04}, {0x1878, 0x04},
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{0x0898, 0x77}, {0x1898, 0x77},
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{0x0054, 0x01}, {0x00e0, 0x38},
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{0x0060, 0x24}, {0x0064, 0x77},
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{0x0070, 0x76}, {0x0234, 0xE8},
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{0x0AF4, 0x15}, {0x1AF4, 0x15},
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{0x081C, 0xE5}, {0x181C, 0xE5},
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{0x099C, 0x48}, {0x199C, 0x48},
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{0x09A4, 0x07}, {0x09A8, 0x22},
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{0x19A4, 0x07}, {0x19A8, 0x22},
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{0x09B8, 0x3E}, {0x19B8, 0x3E},
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{0x09E4, 0x02}, {0x19E4, 0x02},
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{0x0A34, 0x1E}, {0x1A34, 0x1E},
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{0x0A98, 0x2F}, {0x1A98, 0x2F},
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{0x0c30, 0x0E}, {0x0C48, 0x06},
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{0x1C30, 0x0E}, {0x1C48, 0x06},
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{0x028C, 0x18}, {0x0AF0, 0x00},
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{0x1AF0, 0x00}
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};
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static const struct reg_sequence rk3588_udphy_init_sequence[] = {
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{0x0104, 0x44}, {0x0234, 0xE8},
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{0x0248, 0x44}, {0x028C, 0x18},
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{0x081C, 0xE5}, {0x0878, 0x00},
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{0x0994, 0x1C}, {0x0AF0, 0x00},
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{0x181C, 0xE5}, {0x1878, 0x00},
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{0x1994, 0x1C}, {0x1AF0, 0x00},
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{0x0428, 0x60}, {0x0D58, 0x33},
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{0x1D58, 0x33}, {0x0990, 0x74},
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{0x0D64, 0x17}, {0x08C8, 0x13},
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{0x1990, 0x74}, {0x1D64, 0x17},
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{0x18C8, 0x13}, {0x0D90, 0x40},
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{0x0DA8, 0x40}, {0x0DC0, 0x40},
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{0x0DD8, 0x40}, {0x1D90, 0x40},
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{0x1DA8, 0x40}, {0x1DC0, 0x40},
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{0x1DD8, 0x40}, {0x03C0, 0x30},
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{0x03C4, 0x06}, {0x0E10, 0x00},
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{0x1E10, 0x00}, {0x043C, 0x0F},
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{0x0D2C, 0xFF}, {0x1D2C, 0xFF},
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{0x0D34, 0x0F}, {0x1D34, 0x0F},
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{0x08FC, 0x2A}, {0x0914, 0x28},
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{0x0A30, 0x03}, {0x0E38, 0x03},
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{0x0ECC, 0x27}, {0x0ED0, 0x22},
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{0x0ED4, 0x26}, {0x18FC, 0x2A},
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{0x1914, 0x28}, {0x1A30, 0x03},
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{0x1E38, 0x03}, {0x1ECC, 0x27},
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{0x1ED0, 0x22}, {0x1ED4, 0x26},
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{0x0048, 0x0F}, {0x0060, 0x3C},
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{0x0064, 0xF7}, {0x006C, 0x20},
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{0x0070, 0x7D}, {0x0074, 0x68},
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{0x0AF4, 0x1A}, {0x1AF4, 0x1A},
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{0x0440, 0x3F}, {0x10D4, 0x08},
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{0x20D4, 0x08}, {0x00D4, 0x30},
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{0x0024, 0x6e},
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};
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static inline int grfreg_write(struct regmap *base,
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const struct udphy_grf_reg *reg, bool en)
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{
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u32 val, mask, tmp;
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tmp = en ? reg->enable : reg->disable;
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mask = GENMASK(reg->bitend, reg->bitstart);
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val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
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return regmap_write(base, reg->offset, val);
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}
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static int udphy_clk_init(struct rockchip_udphy *udphy, struct device *dev)
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{
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int i;
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udphy->num_clks = devm_clk_bulk_get_all(dev, &udphy->clks);
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if (udphy->num_clks < 1)
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return -ENODEV;
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/* used for configure phy reference clock frequency */
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for (i = 0; i < udphy->num_clks; i++) {
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if (!strncmp(udphy->clks[i].id, "refclk", 6)) {
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udphy->refclk = udphy->clks[i].clk;
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break;
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}
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}
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if (!udphy->refclk)
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dev_warn(udphy->dev, "no refclk found\n");
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return 0;
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}
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static int udphy_reset_init(struct rockchip_udphy *udphy, struct device *dev)
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{
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const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
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int idx;
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udphy->rsts = devm_kcalloc(dev, cfg->num_rsts,
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sizeof(*udphy->rsts), GFP_KERNEL);
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if (!udphy->rsts)
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return -ENOMEM;
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for (idx = 0; idx < cfg->num_rsts; idx++) {
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struct reset_control *rst;
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const char *name = cfg->rst_list[idx];
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rst = devm_reset_control_get(dev, name);
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if (IS_ERR(rst)) {
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dev_err(dev, "failed to get %s reset\n", name);
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devm_kfree(dev, (void *)udphy->rsts);
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return PTR_ERR(rst);
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}
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udphy->rsts[idx] = rst;
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}
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return 0;
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}
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static int udphy_get_rst_idx(const char * const *list, int num, char *name)
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{
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int idx;
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for (idx = 0; idx < num; idx++) {
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if (!strcmp(list[idx], name))
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return idx;
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}
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return -EINVAL;
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}
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static int udphy_reset_assert(struct rockchip_udphy *udphy, char *name)
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{
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const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
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int idx;
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idx = udphy_get_rst_idx(cfg->rst_list, cfg->num_rsts, name);
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if (idx < 0)
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return idx;
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return reset_control_assert(udphy->rsts[idx]);
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}
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static int udphy_reset_deassert(struct rockchip_udphy *udphy, char *name)
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{
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const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
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int idx;
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idx = udphy_get_rst_idx(cfg->rst_list, cfg->num_rsts, name);
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if (idx < 0)
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return idx;
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return reset_control_deassert(udphy->rsts[idx]);
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}
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static void udphy_u3_port_disable(struct rockchip_udphy *udphy, u8 disable)
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{
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const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
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const struct udphy_grf_reg *preg;
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preg = udphy->id ? &cfg->grfcfg.usb3otg1_cfg : &cfg->grfcfg.usb3otg0_cfg;
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grfreg_write(udphy->usbgrf, preg, disable);
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}
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static void udphy_usb_bvalid_enable(struct rockchip_udphy *udphy, u8 enable)
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{
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const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
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grfreg_write(udphy->u2phygrf, &cfg->grfcfg.bvalid_phy_con, enable);
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grfreg_write(udphy->u2phygrf, &cfg->grfcfg.bvalid_grf_con, enable);
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}
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/*
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* In usb/dp combo phy driver, here are 2 ways to mapping lanes.
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*
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* 1 Type-C Mapping table (DP_Alt_Mode V1.0b remove ABF pin mapping)
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* ---------------------------------------------------------------------------
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* Type-C Pin B11-B10 A2-A3 A11-A10 B2-B3
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* PHY Pad ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
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* C/E(Normal) dpln3 dpln2 dpln0 dpln1
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* C/E(Flip ) dpln0 dpln1 dpln3 dpln2
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* D/F(Normal) usbrx usbtx dpln0 dpln1
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* D/F(Flip ) dpln0 dpln1 usbrx usbtx
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* A(Normal ) dpln3 dpln1 dpln2 dpln0
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* A(Flip ) dpln2 dpln0 dpln3 dpln1
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* B(Normal ) usbrx usbtx dpln1 dpln0
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* B(Flip ) dpln1 dpln0 usbrx usbtx
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* ---------------------------------------------------------------------------
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*
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* 2 Mapping the lanes in dtsi
|
* if all 4 lane assignment for dp function, define rockchip,dp-lane-mux = <x x x x>;
|
* sample as follow:
|
* ---------------------------------------------------------------------------
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* B11-B10 A2-A3 A11-A10 B2-B3
|
* rockchip,dp-lane-mux ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
|
* <0 1 2 3> dpln0 dpln1 dpln2 dpln3
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* <2 3 0 1> dpln2 dpln3 dpln0 dpln1
|
* ---------------------------------------------------------------------------
|
* if 2 lane for dp function, 2 lane for usb function, define rockchip,dp-lane-mux = <x x>;
|
* sample as follow:
|
* ---------------------------------------------------------------------------
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* B11-B10 A2-A3 A11-A10 B2-B3
|
* rockchip,dp-lane-mux ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
|
* <0 1> dpln0 dpln1 usbrx usbtx
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* <2 3> usbrx usbtx dpln0 dpln1
|
* ---------------------------------------------------------------------------
|
*/
|
|
static int udphy_dplane_select(struct rockchip_udphy *udphy)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
|
if (cfg->dplane_select)
|
return cfg->dplane_select(udphy);
|
|
return 0;
|
}
|
|
static int udphy_dplane_get(struct rockchip_udphy *udphy)
|
{
|
int dp_lanes;
|
|
switch (udphy->mode) {
|
case UDPHY_MODE_DP:
|
dp_lanes = 4;
|
break;
|
case UDPHY_MODE_DP_USB:
|
dp_lanes = 2;
|
break;
|
case UDPHY_MODE_USB:
|
fallthrough;
|
default:
|
dp_lanes = 0;
|
break;
|
}
|
|
return dp_lanes;
|
}
|
|
static int udphy_dplane_enable(struct rockchip_udphy *udphy, int dp_lanes)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
int ret = 0;
|
|
if (cfg->dplane_enable)
|
ret = cfg->dplane_enable(udphy, dp_lanes);
|
|
return ret;
|
}
|
|
static int upphy_set_typec_default_mapping(struct rockchip_udphy *udphy)
|
{
|
if (udphy->flip) {
|
udphy->dp_lane_sel[0] = 0;
|
udphy->dp_lane_sel[1] = 1;
|
udphy->dp_lane_sel[2] = 3;
|
udphy->dp_lane_sel[3] = 2;
|
udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[2] = PHY_LANE_MUX_USB;
|
udphy->lane_mux_sel[3] = PHY_LANE_MUX_USB;
|
udphy->dp_aux_dout_sel = PHY_AUX_DP_DATA_POL_INVERT;
|
udphy->dp_aux_din_sel = PHY_AUX_DP_DATA_POL_INVERT;
|
gpiod_set_value_cansleep(udphy->sbu1_dc_gpio, 1);
|
gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 0);
|
} else {
|
udphy->dp_lane_sel[0] = 2;
|
udphy->dp_lane_sel[1] = 3;
|
udphy->dp_lane_sel[2] = 1;
|
udphy->dp_lane_sel[3] = 0;
|
udphy->lane_mux_sel[0] = PHY_LANE_MUX_USB;
|
udphy->lane_mux_sel[1] = PHY_LANE_MUX_USB;
|
udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
|
udphy->dp_aux_dout_sel = PHY_AUX_DP_DATA_POL_NORMAL;
|
udphy->dp_aux_din_sel = PHY_AUX_DP_DATA_POL_NORMAL;
|
gpiod_set_value_cansleep(udphy->sbu1_dc_gpio, 0);
|
gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 1);
|
}
|
|
udphy->mode = UDPHY_MODE_DP_USB;
|
|
return 0;
|
}
|
|
static int udphy_orien_sw_set(struct typec_switch *sw,
|
enum typec_orientation orien)
|
{
|
struct rockchip_udphy *udphy = typec_switch_get_drvdata(sw);
|
|
mutex_lock(&udphy->mutex);
|
|
if (orien == TYPEC_ORIENTATION_NONE) {
|
gpiod_set_value_cansleep(udphy->sbu1_dc_gpio, 0);
|
gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 0);
|
/* unattached */
|
udphy_usb_bvalid_enable(udphy, false);
|
goto unlock_ret;
|
}
|
|
udphy->flip = (orien == TYPEC_ORIENTATION_REVERSE) ? true : false;
|
upphy_set_typec_default_mapping(udphy);
|
udphy_usb_bvalid_enable(udphy, true);
|
|
unlock_ret:
|
mutex_unlock(&udphy->mutex);
|
return 0;
|
}
|
|
static int udphy_setup_orien_switch(struct rockchip_udphy *udphy)
|
{
|
struct typec_switch_desc sw_desc = { };
|
|
sw_desc.drvdata = udphy;
|
sw_desc.fwnode = dev_fwnode(udphy->dev);
|
sw_desc.set = udphy_orien_sw_set;
|
|
udphy->sw = typec_switch_register(udphy->dev, &sw_desc);
|
if (IS_ERR(udphy->sw)) {
|
dev_err(udphy->dev, "Error register typec orientation switch: %ld\n",
|
PTR_ERR(udphy->sw));
|
return PTR_ERR(udphy->sw);
|
}
|
|
return 0;
|
}
|
|
static void udphy_orien_switch_unregister(void *data)
|
{
|
struct rockchip_udphy *udphy = data;
|
|
typec_switch_unregister(udphy->sw);
|
}
|
|
static int udphy_setup(struct rockchip_udphy *udphy)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
int ret = 0;
|
|
ret = clk_bulk_prepare_enable(udphy->num_clks, udphy->clks);
|
if (ret) {
|
dev_err(udphy->dev, "failed to enable clk\n");
|
return ret;
|
}
|
|
if (cfg->combophy_init) {
|
ret = cfg->combophy_init(udphy);
|
if (ret) {
|
dev_err(udphy->dev, "failed to init combophy\n");
|
clk_bulk_disable_unprepare(udphy->num_clks, udphy->clks);
|
return ret;
|
}
|
}
|
|
return 0;
|
}
|
|
static int udphy_disable(struct rockchip_udphy *udphy)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
int i;
|
|
clk_bulk_disable_unprepare(udphy->num_clks, udphy->clks);
|
|
for (i = 0; i < cfg->num_rsts; i++)
|
reset_control_assert(udphy->rsts[i]);
|
|
return 0;
|
}
|
|
static int udphy_parse_lane_mux_data(struct rockchip_udphy *udphy, struct device *dev)
|
{
|
struct device_node *np = dev->of_node;
|
struct property *prop;
|
int ret, i, len, num_lanes;
|
|
prop = of_find_property(np, "rockchip,dp-lane-mux", &len);
|
if (!prop) {
|
dev_dbg(dev, "failed to find dp lane mux, following dp alt mode\n");
|
udphy->mode = UDPHY_MODE_USB;
|
return 0;
|
}
|
|
num_lanes = len / sizeof(u32);
|
|
if (num_lanes != 2 && num_lanes != 4) {
|
dev_err(dev, "invalid number of lane mux\n");
|
return -EINVAL;
|
}
|
|
ret = of_property_read_u32_array(np, "rockchip,dp-lane-mux", udphy->dp_lane_sel, num_lanes);
|
if (ret) {
|
dev_err(dev, "get dp lane mux failed\n");
|
return -EINVAL;
|
}
|
|
for (i = 0; i < num_lanes; i++) {
|
int j;
|
|
if (udphy->dp_lane_sel[i] > 3) {
|
dev_err(dev, "lane mux between 0 and 3, exceeding the range\n");
|
return -EINVAL;
|
}
|
|
udphy->lane_mux_sel[udphy->dp_lane_sel[i]] = PHY_LANE_MUX_DP;
|
|
for (j = i + 1; j < num_lanes; j++) {
|
if (udphy->dp_lane_sel[i] == udphy->dp_lane_sel[j]) {
|
dev_err(dev, "set repeat lane mux value\n");
|
return -EINVAL;
|
}
|
}
|
}
|
|
udphy->mode = UDPHY_MODE_DP;
|
if (num_lanes == 2) {
|
udphy->mode |= UDPHY_MODE_USB;
|
udphy->flip = udphy->lane_mux_sel[0] == PHY_LANE_MUX_DP ? true : false;
|
}
|
|
return 0;
|
}
|
|
static int udphy_get_initial_status(struct rockchip_udphy *udphy)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
int ret, i;
|
u32 value;
|
|
ret = clk_bulk_prepare_enable(udphy->num_clks, udphy->clks);
|
if (ret) {
|
dev_err(udphy->dev, "failed to enable clk\n");
|
return ret;
|
}
|
|
for (i = 0; i < cfg->num_rsts; i++)
|
reset_control_deassert(udphy->rsts[i]);
|
|
regmap_read(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET, &value);
|
if (FIELD_GET(CMN_DP_LANE_MUX_ALL, value) && FIELD_GET(CMN_DP_LANE_EN_ALL, value))
|
udphy->status = UDPHY_MODE_DP;
|
else
|
udphy_disable(udphy);
|
|
return 0;
|
}
|
|
static int udphy_parse_dt(struct rockchip_udphy *udphy, struct device *dev)
|
{
|
struct device_node *np = dev->of_node;
|
enum usb_device_speed maximum_speed;
|
int ret;
|
|
udphy->u2phygrf = syscon_regmap_lookup_by_phandle(np, "rockchip,u2phy-grf");
|
if (IS_ERR(udphy->u2phygrf)) {
|
if (PTR_ERR(udphy->u2phygrf) == -ENODEV) {
|
dev_warn(dev, "missing u2phy-grf dt node\n");
|
udphy->u2phygrf = NULL;
|
} else {
|
return PTR_ERR(udphy->u2phygrf);
|
}
|
}
|
|
udphy->udphygrf = syscon_regmap_lookup_by_phandle(np, "rockchip,usbdpphy-grf");
|
if (IS_ERR(udphy->udphygrf)) {
|
if (PTR_ERR(udphy->udphygrf) == -ENODEV) {
|
dev_warn(dev, "missing usbdpphy-grf dt node\n");
|
udphy->udphygrf = NULL;
|
} else {
|
return PTR_ERR(udphy->udphygrf);
|
}
|
}
|
|
udphy->usbgrf = syscon_regmap_lookup_by_phandle(np, "rockchip,usb-grf");
|
if (IS_ERR(udphy->usbgrf)) {
|
if (PTR_ERR(udphy->usbgrf) == -ENODEV) {
|
dev_warn(dev, "missing usb-grf dt node\n");
|
udphy->usbgrf = NULL;
|
} else {
|
return PTR_ERR(udphy->usbgrf);
|
}
|
}
|
|
udphy->vogrf = syscon_regmap_lookup_by_phandle(np, "rockchip,vo-grf");
|
if (IS_ERR(udphy->vogrf)) {
|
if (PTR_ERR(udphy->vogrf) == -ENODEV) {
|
dev_warn(dev, "missing vo-grf dt node\n");
|
udphy->vogrf = NULL;
|
} else {
|
return PTR_ERR(udphy->vogrf);
|
}
|
}
|
|
ret = udphy_parse_lane_mux_data(udphy, dev);
|
if (ret)
|
return ret;
|
|
udphy->sbu1_dc_gpio = devm_gpiod_get_optional(dev, "sbu1-dc", GPIOD_OUT_LOW);
|
if (IS_ERR(udphy->sbu1_dc_gpio))
|
return PTR_ERR(udphy->sbu1_dc_gpio);
|
|
udphy->sbu2_dc_gpio = devm_gpiod_get_optional(dev, "sbu2-dc", GPIOD_OUT_LOW);
|
if (IS_ERR(udphy->sbu2_dc_gpio))
|
return PTR_ERR(udphy->sbu2_dc_gpio);
|
|
if (device_property_present(dev, "maximum-speed")) {
|
maximum_speed = usb_get_maximum_speed(dev);
|
udphy->hs = maximum_speed <= USB_SPEED_HIGH ? true : false;
|
}
|
|
ret = udphy_clk_init(udphy, dev);
|
if (ret)
|
return ret;
|
|
ret = udphy_reset_init(udphy, dev);
|
if (ret)
|
return ret;
|
|
return 0;
|
}
|
|
static int udphy_power_on(struct rockchip_udphy *udphy, u8 mode)
|
{
|
int ret;
|
|
if (!(udphy->mode & mode)) {
|
dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
|
return 0;
|
}
|
|
if (udphy->status == UDPHY_MODE_NONE) {
|
udphy->mode_change = false;
|
ret = udphy_setup(udphy);
|
if (ret)
|
return ret;
|
|
if (udphy->mode & UDPHY_MODE_USB)
|
udphy_u3_port_disable(udphy, false);
|
} else if (udphy->mode_change) {
|
udphy->mode_change = false;
|
udphy->status = UDPHY_MODE_NONE;
|
if (udphy->mode == UDPHY_MODE_DP)
|
udphy_u3_port_disable(udphy, true);
|
|
ret = udphy_disable(udphy);
|
if (ret)
|
return ret;
|
ret = udphy_setup(udphy);
|
if (ret)
|
return ret;
|
}
|
|
udphy->status |= mode;
|
|
return 0;
|
}
|
|
static int udphy_power_off(struct rockchip_udphy *udphy, u8 mode)
|
{
|
int ret;
|
|
if (!(udphy->mode & mode)) {
|
dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
|
return 0;
|
}
|
|
if (!udphy->status)
|
return 0;
|
|
udphy->status &= ~mode;
|
|
if (udphy->status == UDPHY_MODE_NONE) {
|
ret = udphy_disable(udphy);
|
if (ret)
|
return ret;
|
}
|
|
return 0;
|
}
|
|
static int rockchip_dp_phy_power_on(struct phy *phy)
|
{
|
struct rockchip_udphy *udphy = phy_get_drvdata(phy);
|
int ret, dp_lanes;
|
|
mutex_lock(&udphy->mutex);
|
|
dp_lanes = udphy_dplane_get(udphy);
|
phy_set_bus_width(phy, dp_lanes);
|
|
ret = udphy_power_on(udphy, UDPHY_MODE_DP);
|
if (ret)
|
goto unlock;
|
|
ret = udphy_dplane_enable(udphy, dp_lanes);
|
if (ret)
|
goto unlock;
|
|
ret = udphy_dplane_select(udphy);
|
|
unlock:
|
mutex_unlock(&udphy->mutex);
|
/*
|
* If data send by aux channel too fast after phy power on,
|
* the aux may be not ready which will cause aux error. Adding
|
* delay to avoid this issue.
|
*/
|
usleep_range(10000, 11000);
|
return ret;
|
}
|
|
static int rockchip_dp_phy_power_off(struct phy *phy)
|
{
|
struct rockchip_udphy *udphy = phy_get_drvdata(phy);
|
int ret;
|
|
mutex_lock(&udphy->mutex);
|
ret = udphy_dplane_enable(udphy, 0);
|
if (ret)
|
goto unlock;
|
|
ret = udphy_power_off(udphy, UDPHY_MODE_DP);
|
|
unlock:
|
mutex_unlock(&udphy->mutex);
|
return ret;
|
}
|
|
static int rockchip_dp_phy_verify_link_rate(unsigned int link_rate)
|
{
|
switch (link_rate) {
|
case 1620:
|
case 2700:
|
case 5400:
|
case 8100:
|
break;
|
default:
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
static int rockchip_dp_phy_verify_config(struct rockchip_udphy *udphy,
|
struct phy_configure_opts_dp *dp)
|
{
|
int i, ret;
|
|
/* If changing link rate was required, verify it's supported. */
|
ret = rockchip_dp_phy_verify_link_rate(dp->link_rate);
|
if (ret)
|
return ret;
|
|
/* Verify lane count. */
|
switch (dp->lanes) {
|
case 1:
|
case 2:
|
case 4:
|
/* valid lane count. */
|
break;
|
default:
|
return -EINVAL;
|
}
|
|
/*
|
* If changing voltages is required, check swing and pre-emphasis
|
* levels, per-lane.
|
*/
|
if (dp->set_voltages) {
|
/* Lane count verified previously. */
|
for (i = 0; i < dp->lanes; i++) {
|
if (dp->voltage[i] > 3 || dp->pre[i] > 3)
|
return -EINVAL;
|
|
/*
|
* Sum of voltage swing and pre-emphasis levels cannot
|
* exceed 3.
|
*/
|
if (dp->voltage[i] + dp->pre[i] > 3)
|
return -EINVAL;
|
}
|
}
|
|
return 0;
|
}
|
|
static int rockchip_dp_phy_configure(struct phy *phy,
|
union phy_configure_opts *opts)
|
{
|
struct rockchip_udphy *udphy = phy_get_drvdata(phy);
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
int ret;
|
|
ret = rockchip_dp_phy_verify_config(udphy, &opts->dp);
|
if (ret)
|
return ret;
|
|
if (opts->dp.set_rate && cfg->dp_phy_set_rate) {
|
ret = cfg->dp_phy_set_rate(udphy, &opts->dp);
|
if (ret) {
|
dev_err(udphy->dev,
|
"rockchip_hdptx_phy_set_rate failed\n");
|
return ret;
|
}
|
}
|
|
if (opts->dp.set_voltages && cfg->dp_phy_set_voltages) {
|
ret = cfg->dp_phy_set_voltages(udphy, &opts->dp);
|
if (ret) {
|
dev_err(udphy->dev,
|
"rockchip_dp_phy_set_voltages failed\n");
|
return ret;
|
}
|
}
|
|
return 0;
|
}
|
|
static const struct phy_ops rockchip_dp_phy_ops = {
|
.power_on = rockchip_dp_phy_power_on,
|
.power_off = rockchip_dp_phy_power_off,
|
.configure = rockchip_dp_phy_configure,
|
.owner = THIS_MODULE,
|
};
|
|
static int rockchip_u3phy_init(struct phy *phy)
|
{
|
struct rockchip_udphy *udphy = phy_get_drvdata(phy);
|
int ret = 0;
|
|
mutex_lock(&udphy->mutex);
|
/* DP only or high-speed, disable U3 port */
|
if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs) {
|
udphy_u3_port_disable(udphy, true);
|
goto unlock;
|
}
|
|
ret = udphy_power_on(udphy, UDPHY_MODE_USB);
|
|
unlock:
|
mutex_unlock(&udphy->mutex);
|
return ret;
|
}
|
|
static int rockchip_u3phy_exit(struct phy *phy)
|
{
|
struct rockchip_udphy *udphy = phy_get_drvdata(phy);
|
int ret = 0;
|
|
mutex_lock(&udphy->mutex);
|
/* DP only or high-speed */
|
if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs)
|
goto unlock;
|
|
ret = udphy_power_off(udphy, UDPHY_MODE_USB);
|
|
unlock:
|
mutex_unlock(&udphy->mutex);
|
return ret;
|
}
|
|
static const struct phy_ops rockchip_u3phy_ops = {
|
.init = rockchip_u3phy_init,
|
.exit = rockchip_u3phy_exit,
|
.owner = THIS_MODULE,
|
};
|
|
static int usbdp_typec_mux_set(struct typec_mux *mux,
|
struct typec_mux_state *state)
|
{
|
struct rockchip_udphy *udphy = typec_mux_get_drvdata(mux);
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
u8 mode;
|
|
mutex_lock(&udphy->mutex);
|
|
switch (state->mode) {
|
case TYPEC_DP_STATE_C:
|
fallthrough;
|
case TYPEC_DP_STATE_E:
|
udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
|
mode = UDPHY_MODE_DP;
|
break;
|
case TYPEC_DP_STATE_D:
|
fallthrough;
|
default:
|
if (udphy->flip) {
|
udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[2] = PHY_LANE_MUX_USB;
|
udphy->lane_mux_sel[3] = PHY_LANE_MUX_USB;
|
} else {
|
udphy->lane_mux_sel[0] = PHY_LANE_MUX_USB;
|
udphy->lane_mux_sel[1] = PHY_LANE_MUX_USB;
|
udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
|
udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
|
}
|
mode = UDPHY_MODE_DP_USB;
|
break;
|
}
|
|
if (state->alt && state->alt->svid == USB_TYPEC_DP_SID) {
|
struct typec_displayport_data *data = state->data;
|
|
if (!data) {
|
if (cfg->hpd_event_trigger)
|
cfg->hpd_event_trigger(udphy, false);
|
} else if (data->status & DP_STATUS_IRQ_HPD) {
|
if (cfg->hpd_event_trigger) {
|
cfg->hpd_event_trigger(udphy, false);
|
usleep_range(750, 800);
|
cfg->hpd_event_trigger(udphy, true);
|
}
|
} else if (data->status & DP_STATUS_HPD_STATE) {
|
if (udphy->mode != mode) {
|
udphy->mode = mode;
|
udphy->mode_change = true;
|
}
|
if (cfg->hpd_event_trigger)
|
cfg->hpd_event_trigger(udphy, true);
|
} else {
|
if (cfg->hpd_event_trigger)
|
cfg->hpd_event_trigger(udphy, false);
|
}
|
}
|
|
mutex_unlock(&udphy->mutex);
|
return 0;
|
}
|
|
static int udphy_setup_typec_mux(struct rockchip_udphy *udphy)
|
{
|
struct typec_mux_desc mux_desc = {};
|
|
mux_desc.drvdata = udphy;
|
mux_desc.fwnode = dev_fwnode(udphy->dev);
|
mux_desc.set = usbdp_typec_mux_set;
|
|
udphy->mux = typec_mux_register(udphy->dev, &mux_desc);
|
if (IS_ERR(udphy->mux)) {
|
dev_err(udphy->dev, "Error register typec mux: %ld\n",
|
PTR_ERR(udphy->mux));
|
return PTR_ERR(udphy->mux);
|
}
|
|
return 0;
|
}
|
|
static void udphy_typec_mux_unregister(void *data)
|
{
|
struct rockchip_udphy *udphy = data;
|
|
typec_mux_unregister(udphy->mux);
|
}
|
|
static u32 udphy_dp_get_max_link_rate(struct rockchip_udphy *udphy, struct device_node *np)
|
{
|
u32 max_link_rate;
|
int ret;
|
|
ret = of_property_read_u32(np, "max-link-rate", &max_link_rate);
|
if (ret)
|
return 8100;
|
|
ret = rockchip_dp_phy_verify_link_rate(max_link_rate);
|
if (ret) {
|
dev_warn(udphy->dev, "invalid max-link-rate value:%d\n", max_link_rate);
|
max_link_rate = 8100;
|
}
|
|
return max_link_rate;
|
}
|
|
static const struct regmap_config rockchip_udphy_pma_regmap_cfg = {
|
.reg_bits = 32,
|
.reg_stride = 4,
|
.val_bits = 32,
|
.fast_io = true,
|
.max_register = 0x20dc,
|
};
|
|
static int rockchip_udphy_probe(struct platform_device *pdev)
|
{
|
struct device *dev = &pdev->dev;
|
struct device_node *np = dev->of_node;
|
struct device_node *child_np;
|
struct phy_provider *phy_provider;
|
struct resource *res;
|
struct rockchip_udphy *udphy;
|
const struct rockchip_udphy_cfg *phy_cfgs;
|
void __iomem *base;
|
int id, ret;
|
|
udphy = devm_kzalloc(dev, sizeof(*udphy), GFP_KERNEL);
|
if (!udphy)
|
return -ENOMEM;
|
|
id = of_alias_get_id(dev->of_node, "usbdp");
|
if (id < 0)
|
id = 0;
|
udphy->id = id;
|
|
phy_cfgs = of_device_get_match_data(dev);
|
if (!phy_cfgs) {
|
dev_err(dev, "no OF data can be matched with %p node\n", np);
|
return -EINVAL;
|
}
|
|
udphy->cfgs = phy_cfgs;
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
base = devm_ioremap_resource(dev, res);
|
if (IS_ERR(base))
|
return PTR_ERR(base);
|
|
udphy->pma_regmap = devm_regmap_init_mmio(dev, base + UDPHY_PMA,
|
&rockchip_udphy_pma_regmap_cfg);
|
if (IS_ERR(udphy->pma_regmap))
|
return PTR_ERR(udphy->pma_regmap);
|
|
ret = udphy_parse_dt(udphy, dev);
|
if (ret)
|
return ret;
|
|
ret = udphy_get_initial_status(udphy);
|
if (ret)
|
return ret;
|
|
mutex_init(&udphy->mutex);
|
udphy->dev = dev;
|
platform_set_drvdata(pdev, udphy);
|
|
if (device_property_present(dev, "orientation-switch")) {
|
ret = udphy_setup_orien_switch(udphy);
|
if (ret)
|
return ret;
|
|
ret = devm_add_action_or_reset(dev, udphy_orien_switch_unregister, udphy);
|
if (ret)
|
return ret;
|
}
|
|
if (device_property_present(dev, "svid")) {
|
ret = udphy_setup_typec_mux(udphy);
|
if (ret)
|
return ret;
|
|
ret = devm_add_action_or_reset(dev, udphy_typec_mux_unregister, udphy);
|
if (ret)
|
return ret;
|
}
|
|
for_each_available_child_of_node(np, child_np) {
|
struct phy *phy;
|
|
if (of_node_name_eq(child_np, "dp-port")) {
|
phy = devm_phy_create(dev, child_np, &rockchip_dp_phy_ops);
|
if (IS_ERR(phy)) {
|
dev_err(dev, "failed to create dp phy: %pOFn\n", child_np);
|
goto put_child;
|
}
|
|
phy_set_bus_width(phy, udphy_dplane_get(udphy));
|
phy->attrs.max_link_rate = udphy_dp_get_max_link_rate(udphy, child_np);
|
} else if (of_node_name_eq(child_np, "u3-port")) {
|
phy = devm_phy_create(dev, child_np, &rockchip_u3phy_ops);
|
if (IS_ERR(phy)) {
|
dev_err(dev, "failed to create usb phy: %pOFn\n", child_np);
|
goto put_child;
|
}
|
} else
|
continue;
|
|
phy_set_drvdata(phy, udphy);
|
}
|
|
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
|
if (IS_ERR(phy_provider)) {
|
dev_err(dev, "failed to register phy provider\n");
|
goto put_child;
|
}
|
|
return 0;
|
|
put_child:
|
of_node_put(child_np);
|
return ret;
|
}
|
|
static int rk3588_udphy_refclk_set(struct rockchip_udphy *udphy)
|
{
|
unsigned long rate;
|
int ret;
|
|
/* configure phy reference clock */
|
rate = clk_get_rate(udphy->refclk);
|
dev_dbg(udphy->dev, "refclk freq %ld\n", rate);
|
|
switch (rate) {
|
case 24000000:
|
ret = regmap_multi_reg_write(udphy->pma_regmap, rk3588_udphy_24m_refclk_cfg,
|
ARRAY_SIZE(rk3588_udphy_24m_refclk_cfg));
|
if (ret)
|
return ret;
|
break;
|
case 26000000:
|
/* register default is 26MHz */
|
ret = regmap_multi_reg_write(udphy->pma_regmap, rk3588_udphy_26m_refclk_cfg,
|
ARRAY_SIZE(rk3588_udphy_26m_refclk_cfg));
|
if (ret)
|
return ret;
|
break;
|
default:
|
dev_err(udphy->dev, "unsupported refclk freq %ld\n", rate);
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
static int rk3588_udphy_status_check(struct rockchip_udphy *udphy)
|
{
|
unsigned int val;
|
int ret;
|
|
/* LCPLL check */
|
if (udphy->mode & UDPHY_MODE_USB) {
|
ret = regmap_read_poll_timeout(udphy->pma_regmap, CMN_ANA_LCPLL_DONE_OFFSET,
|
val, (val & CMN_ANA_LCPLL_AFC_DONE) &&
|
(val & CMN_ANA_LCPLL_LOCK_DONE), 200, 100000);
|
if (ret) {
|
dev_err(udphy->dev, "cmn ana lcpll lock timeout\n");
|
return ret;
|
}
|
}
|
|
if (udphy->mode & UDPHY_MODE_USB) {
|
if (!udphy->flip) {
|
ret = regmap_read_poll_timeout(udphy->pma_regmap,
|
TRSV_LN0_MON_RX_CDR_DONE_OFFSET, val,
|
val & TRSV_LN0_MON_RX_CDR_LOCK_DONE,
|
200, 100000);
|
if (ret)
|
dev_notice(udphy->dev, "trsv ln0 mon rx cdr lock timeout\n");
|
} else {
|
ret = regmap_read_poll_timeout(udphy->pma_regmap,
|
TRSV_LN2_MON_RX_CDR_DONE_OFFSET, val,
|
val & TRSV_LN2_MON_RX_CDR_LOCK_DONE,
|
200, 100000);
|
if (ret)
|
dev_notice(udphy->dev, "trsv ln2 mon rx cdr lock timeout\n");
|
}
|
}
|
|
return 0;
|
}
|
|
static int rk3588_udphy_init(struct rockchip_udphy *udphy)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
int ret;
|
|
/* enable rx lfps for usb */
|
if (udphy->mode & UDPHY_MODE_USB)
|
grfreg_write(udphy->udphygrf, &cfg->grfcfg.rx_lfps, true);
|
|
/* Step 1: power on pma and deassert apb rstn */
|
grfreg_write(udphy->udphygrf, &cfg->grfcfg.low_pwrn, true);
|
|
udphy_reset_deassert(udphy, "pma_apb");
|
udphy_reset_deassert(udphy, "pcs_apb");
|
|
/* Step 2: set init sequence and phy refclk */
|
ret = regmap_multi_reg_write(udphy->pma_regmap, rk3588_udphy_init_sequence,
|
ARRAY_SIZE(rk3588_udphy_init_sequence));
|
if (ret) {
|
dev_err(udphy->dev, "init sequence set error %d\n", ret);
|
goto assert_apb;
|
}
|
|
ret = rk3588_udphy_refclk_set(udphy);
|
if (ret) {
|
dev_err(udphy->dev, "refclk set error %d\n", ret);
|
goto assert_apb;
|
}
|
|
/* Step 3: configure lane mux */
|
regmap_update_bits(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET,
|
CMN_DP_LANE_MUX_ALL | CMN_DP_LANE_EN_ALL,
|
FIELD_PREP(CMN_DP_LANE_MUX_N(3), udphy->lane_mux_sel[3]) |
|
FIELD_PREP(CMN_DP_LANE_MUX_N(2), udphy->lane_mux_sel[2]) |
|
FIELD_PREP(CMN_DP_LANE_MUX_N(1), udphy->lane_mux_sel[1]) |
|
FIELD_PREP(CMN_DP_LANE_MUX_N(0), udphy->lane_mux_sel[0]) |
|
FIELD_PREP(CMN_DP_LANE_EN_ALL, 0));
|
|
/* Step 4: deassert init rstn and wait for 200ns from datasheet */
|
if (udphy->mode & UDPHY_MODE_USB)
|
udphy_reset_deassert(udphy, "init");
|
|
if (udphy->mode & UDPHY_MODE_DP) {
|
regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
|
CMN_DP_INIT_RSTN,
|
FIELD_PREP(CMN_DP_INIT_RSTN, 0x1));
|
}
|
|
udelay(1);
|
|
/* Step 5: deassert cmn/lane rstn */
|
if (udphy->mode & UDPHY_MODE_USB) {
|
udphy_reset_deassert(udphy, "cmn");
|
udphy_reset_deassert(udphy, "lane");
|
}
|
|
/* Step 6: wait for lock done of pll */
|
ret = rk3588_udphy_status_check(udphy);
|
if (ret)
|
goto assert_phy;
|
|
return 0;
|
|
assert_phy:
|
udphy_reset_assert(udphy, "init");
|
udphy_reset_assert(udphy, "cmn");
|
udphy_reset_assert(udphy, "lane");
|
|
assert_apb:
|
udphy_reset_assert(udphy, "pma_apb");
|
udphy_reset_assert(udphy, "pcs_apb");
|
return ret;
|
}
|
|
static int rk3588_udphy_hpd_event_trigger(struct rockchip_udphy *udphy, bool hpd)
|
{
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
|
udphy->dp_sink_hpd_sel = true;
|
udphy->dp_sink_hpd_cfg = hpd;
|
|
grfreg_write(udphy->vogrf, &cfg->vogrfcfg[udphy->id].hpd_trigger, hpd);
|
|
return 0;
|
}
|
|
static int rk3588_udphy_dplane_enable(struct rockchip_udphy *udphy, int dp_lanes)
|
{
|
int i;
|
u32 val = 0;
|
|
for (i = 0; i < dp_lanes; i++)
|
val |= BIT(udphy->dp_lane_sel[i]);
|
|
regmap_update_bits(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET, CMN_DP_LANE_EN_ALL,
|
FIELD_PREP(CMN_DP_LANE_EN_ALL, val));
|
|
if (!dp_lanes)
|
regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
|
CMN_DP_CMN_RSTN, FIELD_PREP(CMN_DP_CMN_RSTN, 0x0));
|
|
return 0;
|
}
|
|
static int rk3588_udphy_dplane_select(struct rockchip_udphy *udphy)
|
{
|
u32 value = 0;
|
|
switch (udphy->mode) {
|
case UDPHY_MODE_DP:
|
value |= 2 << udphy->dp_lane_sel[2] * 2;
|
value |= 3 << udphy->dp_lane_sel[3] * 2;
|
fallthrough;
|
case UDPHY_MODE_DP_USB:
|
value |= 0 << udphy->dp_lane_sel[0] * 2;
|
value |= 1 << udphy->dp_lane_sel[1] * 2;
|
break;
|
case UDPHY_MODE_USB:
|
break;
|
default:
|
break;
|
}
|
|
regmap_write(udphy->vogrf, udphy->id ? RK3588_GRF_VO0_CON2 : RK3588_GRF_VO0_CON0,
|
((DP_AUX_DIN_SEL | DP_AUX_DOUT_SEL | DP_LANE_SEL_ALL) << 16) |
|
FIELD_PREP(DP_AUX_DIN_SEL, udphy->dp_aux_din_sel) |
|
FIELD_PREP(DP_AUX_DOUT_SEL, udphy->dp_aux_dout_sel) | value);
|
|
return 0;
|
}
|
|
static int rk3588_dp_phy_set_rate(struct rockchip_udphy *udphy,
|
struct phy_configure_opts_dp *dp)
|
{
|
u32 val;
|
int ret;
|
|
regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
|
CMN_DP_CMN_RSTN, FIELD_PREP(CMN_DP_CMN_RSTN, 0x0));
|
|
switch (dp->link_rate) {
|
case 1620:
|
udphy->bw = DP_BW_RBR;
|
break;
|
case 2700:
|
udphy->bw = DP_BW_HBR;
|
break;
|
case 5400:
|
udphy->bw = DP_BW_HBR2;
|
break;
|
case 8100:
|
udphy->bw = DP_BW_HBR3;
|
break;
|
default:
|
return -EINVAL;
|
}
|
|
regmap_update_bits(udphy->pma_regmap, CMN_DP_LINK_OFFSET, CMN_DP_TX_LINK_BW,
|
FIELD_PREP(CMN_DP_TX_LINK_BW, udphy->bw));
|
regmap_update_bits(udphy->pma_regmap, CMN_SSC_EN_OFFSET, CMN_ROPLL_SSC_EN,
|
FIELD_PREP(CMN_ROPLL_SSC_EN, dp->ssc));
|
regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET, CMN_DP_CMN_RSTN,
|
FIELD_PREP(CMN_DP_CMN_RSTN, 0x1));
|
|
ret = regmap_read_poll_timeout(udphy->pma_regmap, CMN_ANA_ROPLL_DONE_OFFSET, val,
|
FIELD_GET(CMN_ANA_ROPLL_LOCK_DONE, val) &&
|
FIELD_GET(CMN_ANA_ROPLL_AFC_DONE, val),
|
0, 1000);
|
if (ret) {
|
dev_err(udphy->dev, "ROPLL is not lock\n");
|
return ret;
|
}
|
|
return 0;
|
}
|
|
static void rk3588_dp_phy_set_voltage(struct rockchip_udphy *udphy, u8 bw,
|
u32 voltage, u32 pre, u32 lane)
|
{
|
u32 offset = 0x800 * lane;
|
u32 val;
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
const struct dp_tx_drv_ctrl (*dp_ctrl)[4];
|
|
dp_ctrl = udphy->mux ? cfg->dp_tx_ctrl_cfg_typec[bw] : cfg->dp_tx_ctrl_cfg[bw];
|
val = dp_ctrl[voltage][pre].trsv_reg0204;
|
regmap_write(udphy->pma_regmap, 0x0810 + offset, val);
|
|
val = dp_ctrl[voltage][pre].trsv_reg0205;
|
regmap_write(udphy->pma_regmap, 0x0814 + offset, val);
|
|
val = dp_ctrl[voltage][pre].trsv_reg0206;
|
regmap_write(udphy->pma_regmap, 0x0818 + offset, val);
|
|
val = dp_ctrl[voltage][pre].trsv_reg0207;
|
regmap_write(udphy->pma_regmap, 0x081c + offset, val);
|
}
|
|
static int rk3588_dp_phy_set_voltages(struct rockchip_udphy *udphy,
|
struct phy_configure_opts_dp *dp)
|
{
|
u32 i, lane;
|
|
for (i = 0; i < dp->lanes; i++) {
|
lane = udphy->dp_lane_sel[i];
|
switch (dp->link_rate) {
|
case 1620:
|
case 2700:
|
regmap_update_bits(udphy->pma_regmap, TRSV_ANA_TX_CLK_OFFSET_N(lane),
|
LN_ANA_TX_SER_TXCLK_INV,
|
FIELD_PREP(LN_ANA_TX_SER_TXCLK_INV,
|
udphy->lane_mux_sel[lane]));
|
break;
|
case 5400:
|
case 8100:
|
regmap_update_bits(udphy->pma_regmap, TRSV_ANA_TX_CLK_OFFSET_N(lane),
|
LN_ANA_TX_SER_TXCLK_INV,
|
FIELD_PREP(LN_ANA_TX_SER_TXCLK_INV, 0x0));
|
break;
|
}
|
|
rk3588_dp_phy_set_voltage(udphy, udphy->bw, dp->voltage[i], dp->pre[i], lane);
|
}
|
|
return 0;
|
}
|
|
static int __maybe_unused udphy_resume(struct device *dev)
|
{
|
struct rockchip_udphy *udphy = dev_get_drvdata(dev);
|
const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
|
|
if (udphy->dp_sink_hpd_sel)
|
cfg->hpd_event_trigger(udphy, udphy->dp_sink_hpd_cfg);
|
|
return 0;
|
}
|
|
static const struct dev_pm_ops udphy_pm_ops = {
|
SET_LATE_SYSTEM_SLEEP_PM_OPS(NULL, udphy_resume)
|
};
|
|
static const char * const rk3588_udphy_rst_l[] = {
|
"init", "cmn", "lane", "pcs_apb", "pma_apb"
|
};
|
|
static const struct rockchip_udphy_cfg rk3588_udphy_cfgs = {
|
.num_rsts = ARRAY_SIZE(rk3588_udphy_rst_l),
|
.rst_list = rk3588_udphy_rst_l,
|
.grfcfg = {
|
/* u2phy-grf */
|
.bvalid_phy_con = { 0x0008, 1, 0, 0x2, 0x3 },
|
.bvalid_grf_con = { 0x0010, 3, 2, 0x2, 0x3 },
|
|
/* usb-grf */
|
.usb3otg0_cfg = { 0x001c, 15, 0, 0x1100, 0x0188 },
|
.usb3otg1_cfg = { 0x0034, 15, 0, 0x1100, 0x0188 },
|
|
/* usbdpphy-grf */
|
.low_pwrn = { 0x0004, 13, 13, 0, 1 },
|
.rx_lfps = { 0x0004, 14, 14, 0, 1 },
|
},
|
.vogrfcfg = {
|
{
|
.hpd_trigger = { 0x0000, 11, 10, 1, 3 },
|
},
|
{
|
.hpd_trigger = { 0x0008, 11, 10, 1, 3 },
|
},
|
},
|
.dp_tx_ctrl_cfg = {
|
rk3588_dp_tx_drv_ctrl_rbr_hbr,
|
rk3588_dp_tx_drv_ctrl_rbr_hbr,
|
rk3588_dp_tx_drv_ctrl_hbr2,
|
rk3588_dp_tx_drv_ctrl_hbr3,
|
},
|
.dp_tx_ctrl_cfg_typec = {
|
rk3588_dp_tx_drv_ctrl_rbr_hbr_typec,
|
rk3588_dp_tx_drv_ctrl_rbr_hbr_typec,
|
rk3588_dp_tx_drv_ctrl_hbr2,
|
rk3588_dp_tx_drv_ctrl_hbr3,
|
},
|
.combophy_init = rk3588_udphy_init,
|
.dp_phy_set_rate = rk3588_dp_phy_set_rate,
|
.dp_phy_set_voltages = rk3588_dp_phy_set_voltages,
|
.hpd_event_trigger = rk3588_udphy_hpd_event_trigger,
|
.dplane_enable = rk3588_udphy_dplane_enable,
|
.dplane_select = rk3588_udphy_dplane_select,
|
};
|
|
static const struct of_device_id rockchip_udphy_dt_match[] = {
|
{
|
.compatible = "rockchip,rk3588-usbdp-phy",
|
.data = &rk3588_udphy_cfgs
|
},
|
{ /* sentinel */ }
|
};
|
|
MODULE_DEVICE_TABLE(of, rockchip_udphy_dt_match);
|
|
static struct platform_driver rockchip_udphy_driver = {
|
.probe = rockchip_udphy_probe,
|
.driver = {
|
.name = "rockchip-usbdp-phy",
|
.of_match_table = rockchip_udphy_dt_match,
|
.pm = &udphy_pm_ops,
|
},
|
};
|
|
module_platform_driver(rockchip_udphy_driver);
|
|
MODULE_AUTHOR("Frank Wang <frank.wang@rock-chips.com>");
|
MODULE_AUTHOR("Zhang Yubing <yubing.zhang@rock-chips.com>");
|
MODULE_DESCRIPTION("Rockchip USBDP Combo PHY driver");
|
MODULE_LICENSE("GPL v2");
|
