Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

Krzysztof Kozlowski
2015-08-27T12:26:52Z

W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
> Currently vmmc's property is wrong.
> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
> (Card supply power and I/O Line supply Power.)
>
> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
> ---
> arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index ca7d168..4ddabfd 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -461,10 +461,10 @@
> &mshc_0 {
> pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
> pinctrl-names = "default";
> - vmmc-supply = <&ldo20_reg &buck8_reg>;
> + vmmc-supply = <&ldo20_reg>;
> + vqmmc-supply = <&buck8_reg>;

Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
so it should be VQMMC?

In the same time I can't find on schematics where BUCK8 goes...

The SDHCI_2 node below looks good.

Best regards,
Krzysztof

> mmc-pwrseq = <&emmc_pwrseq>;
> status = "okay";
> -
> num-slots = <1>;
> broken-cd;
> card-detect-delay = <200>;
> @@ -485,7 +485,8 @@
> bus-width = <4>;
> pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
> pinctrl-names = "default";
> - vmmc-supply = <&ldo4_reg &ldo21_reg>;
> + vmmc-supply = <&ldo21_reg>;
> + vqmmc-supply = <&ldo4_reg>;
> cd-gpios = <&gpk2 2 0>;
> cd-inverted;
> status = "okay";
>