rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
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@@ -38,6 +38,12 @@
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   execute tuning when needed. If not specified, the host will do tuning
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   for 360 times, namely tuning for each degree.
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+* pinctrl-names: should be "default" or "normal" combined with "idle". For
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+  SDIO or eMMC devices, recommend to use "default". For SD/MMC cards, recommend
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+  to use "normal" combined with "idle" to prevent power leak if vqmmc can't be
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+  powered off. "normal" state is the same as "default" state, but "idle" state
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+  should define the clk/cmd/data line to be pulled down or pulled none.
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+
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 Example:
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 	rkdwmmc0@12200000 {
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@@ -47,3 +53,30 @@
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 		#address-cells = <1>;
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 		#size-cells = <0>;
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 	};
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+
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+	/* "default" pinctrl */
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+	&rkdwmmc0{
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+		...
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+		pinctrl-names = "default"
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+		pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;
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+		...
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+	};
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+
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+	/* "normal" combined with "idle" pinctrl */
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+	sdmmc_idle_gpios: sdmmc-idle-gpios {
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+		rockchip,pins =
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+			<3 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>,
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+			<3 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>,
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+			<3 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>,
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+			<3 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>,
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+			<3 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>,
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+			<3 RK_PA7 RK_FUNC_GPIO &pcfg_pull_none>;
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+	};
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+
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+	&rkdwmmc0{
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+		...
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+		pinctrl-names = "normal", "idle";
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+		pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;
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+		pinctrl-1 = <&sdmmc_idle_gpios &sdmmc0_det>;
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+		...
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+	}