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83713f3414
Still does not boot, goes into boot loop at U-boot line: "Starting Kernel..." More work needed.
73 lines
2.3 KiB
Diff
73 lines
2.3 KiB
Diff
From 97c28fba89441a919376ff288efad9288c9937d1 Mon Sep 17 00:00:00 2001
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From: Levin Du <djw@t-chip.com.cn>
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Date: Tue, 31 Jul 2018 13:59:22 +0800
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Subject: [PATCH] arm64: dts: rockchip: add sdmmc UHS support for roc-rk3328-cc
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In roc-rk3328-cc board, the signal voltage of sdmmc is supplied by the
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vcc_sdio regulator, which is a mux between 1.8V and 3.3V, controlled by
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a special output only gpio pin labeled "gpiomut_pmuio_iout",
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corresponding bit 1 of the syscon GRF_SOC_CON10.
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This special pin can now be reference as <&grf_gpio 0>, thanks to the
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gpio-syscon driver, which makes writing regulator-gpio possible.
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If the signal voltage changes, the io domain needs to change
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correspondingly.
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To use this feature, the following options are required in kernel config:
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- CONFIG_GPIO_SYSCON=y
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- CONFIG_POWER_AVS=y
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- CONFIG_ROCKCHIP_IODOMAIN=y
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Signed-off-by: Levin Du <djw@t-chip.com.cn>
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Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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---
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.../arm64/boot/dts/rockchip/rk3328-roc-cc.dts | 20 ++++++++++++++++++-
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1 file changed, 19 insertions(+), 1 deletion(-)
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diff --git a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
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index b983abd3d9c8..99d0d9912950 100644
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--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
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@@ -41,6 +41,19 @@
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vin-supply = <&vcc_io>;
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};
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+ vcc_sdio: sdmmcio-regulator {
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+ compatible = "regulator-gpio";
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+ gpios = <&grf_gpio 0 GPIO_ACTIVE_HIGH>;
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+ states = <1800000 0x1
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+ 3300000 0x0>;
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+ regulator-name = "vcc_sdio";
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+ regulator-type = "voltage";
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+ regulator-min-microvolt = <1800000>;
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+ regulator-max-microvolt = <3300000>;
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+ regulator-always-on;
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+ vin-supply = <&vcc_sys>;
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+ };
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+
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vcc_host1_5v: vcc_otg_5v: vcc-host1-5v-regulator {
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compatible = "regulator-fixed";
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enable-active-high;
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@@ -213,7 +226,7 @@
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vccio1-supply = <&vcc_io>;
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vccio2-supply = <&vcc18_emmc>;
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- vccio3-supply = <&vcc_io>;
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+ vccio3-supply = <&vcc_sdio>;
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vccio4-supply = <&vcc_18>;
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vccio5-supply = <&vcc_io>;
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vccio6-supply = <&vcc_io>;
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@@ -242,7 +255,12 @@
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max-frequency = <150000000>;
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pinctrl-names = "default";
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pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_dectn &sdmmc0_bus4>;
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+ sd-uhs-sdr12;
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+ sd-uhs-sdr25;
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+ sd-uhs-sdr50;
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+ sd-uhs-sdr104;
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vmmc-supply = <&vcc_sd>;
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+ vqmmc-supply = <&vcc_sdio>;
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status = "okay";
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};
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