From e3e12f52b214121840b44c91de5b3e5af5d3eb84 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 06 Nov 2023 03:04:41 +0000
Subject: [PATCH] rk3568 rt init
---
kernel/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt | 33 +++++++++++++++++++++++++++++++++
1 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/kernel/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt b/kernel/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
index 6f629b1..9a5b278 100644
--- a/kernel/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
+++ b/kernel/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
@@ -38,6 +38,12 @@
execute tuning when needed. If not specified, the host will do tuning
for 360 times, namely tuning for each degree.
+* pinctrl-names: should be "default" or "normal" combined with "idle". For
+ SDIO or eMMC devices, recommend to use "default". For SD/MMC cards, recommend
+ to use "normal" combined with "idle" to prevent power leak if vqmmc can't be
+ powered off. "normal" state is the same as "default" state, but "idle" state
+ should define the clk/cmd/data line to be pulled down or pulled none.
+
Example:
rkdwmmc0@12200000 {
@@ -47,3 +53,30 @@
#address-cells = <1>;
#size-cells = <0>;
};
+
+ /* "default" pinctrl */
+ &rkdwmmc0{
+ ...
+ pinctrl-names = "default"
+ pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;
+ ...
+ };
+
+ /* "normal" combined with "idle" pinctrl */
+ sdmmc_idle_gpios: sdmmc-idle-gpios {
+ rockchip,pins =
+ <3 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>,
+ <3 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>,
+ <3 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>,
+ <3 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>,
+ <3 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>,
+ <3 RK_PA7 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+
+ &rkdwmmc0{
+ ...
+ pinctrl-names = "normal", "idle";
+ pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;
+ pinctrl-1 = <&sdmmc_idle_gpios &sdmmc0_det>;
+ ...
+ }
--
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