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| // SPDX-License-Identifier: GPL-2.0-or-later
| /*
| * Device Tree support for Mediatek SoCs
| *
| * Copyright (c) 2014 MundoReader S.L.
| * Author: Matthias Brugger <matthias.bgg@gmail.com>
| */
| #include <linux/init.h>
| #include <linux/io.h>
| #include <asm/mach/arch.h>
| #include <linux/of.h>
| #include <linux/of_clk.h>
| #include <linux/clocksource.h>
|
|
| #define GPT6_CON_MT65xx 0x10008060
| #define GPT_ENABLE 0x31
|
| static void __init mediatek_timer_init(void)
| {
| void __iomem *gpt_base;
|
| if (of_machine_is_compatible("mediatek,mt6589") ||
| of_machine_is_compatible("mediatek,mt7623") ||
| of_machine_is_compatible("mediatek,mt8135") ||
| of_machine_is_compatible("mediatek,mt8127")) {
| /* turn on GPT6 which ungates arch timer clocks */
| gpt_base = ioremap(GPT6_CON_MT65xx, 0x04);
|
| /* enable clock and set to free-run */
| writel(GPT_ENABLE, gpt_base);
| iounmap(gpt_base);
| }
|
| of_clk_init(NULL);
| timer_probe();
| };
|
| static const char * const mediatek_board_dt_compat[] = {
| "mediatek,mt2701",
| "mediatek,mt6589",
| "mediatek,mt6592",
| "mediatek,mt7623",
| "mediatek,mt7629",
| "mediatek,mt8127",
| "mediatek,mt8135",
| NULL,
| };
|
| DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)")
| .dt_compat = mediatek_board_dt_compat,
| .init_time = mediatek_timer_init,
| MACHINE_END
|
|
