linux-kernel - Re: [PATCH] ARM: dts: rockchip: Keep rk3288-tinker SD card IO powered during reboot

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Date:   Fri, 13 Mar 2020 13:38:53 -0500
From:   Joshua Watt <jpewhacker@...il.com>
To:     linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH] ARM: dts: rockchip: Keep rk3288-tinker SD card IO powered
 during reboot


On 2/19/20 2:42 PM, Joshua Watt wrote:
> IO voltage regulator for the SD card must be kept on all the time,
> otherwise when the board reboots the SD card can't be read by the
> bootloader.

Ping?

>
> Signed-off-by: Joshua Watt <JPEWhacker@...il.com>
> ---
>   arch/arm/boot/dts/rk3288-tinker.dtsi | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/rk3288-tinker.dtsi b/arch/arm/boot/dts/rk3288-tinker.dtsi
> index 312582c1bd37..acfaa12ec239 100644
> --- a/arch/arm/boot/dts/rk3288-tinker.dtsi
> +++ b/arch/arm/boot/dts/rk3288-tinker.dtsi
> @@ -276,6 +276,7 @@
>   			};
>   
>   			vccio_sd: LDO_REG5 {
> +				regulator-always-on;
>   				regulator-boot-on;
>   				regulator-min-microvolt = <1800000>;
>   				regulator-max-microvolt = <3300000>;