linux-kernel - Re: [PATCH 10/10] ARM: dts: bcm2711: Add vmmc regulator in emmc2

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Date:   Fri, 6 Mar 2020 12:07:41 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        devicetree@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-mmc@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>
Cc:     ulf.hansson@...aro.org, f.fainelli@...il.com, phil@...pberrypi.org,
        adrian.hunter@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/10] ARM: dts: bcm2711: Add vmmc regulator in emmc2

Hi Nicolas,

On 06.03.20 11:38, Nicolas Saenz Julienne wrote:
> The SD card power can be controlled trough a pin routed into the board's
> external GPIO expander. Turn that into a regulator and provide it to
> emmc2.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---
>  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> index e26ea9006378..8e98e917f9f4 100644
> --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> @@ -56,6 +56,16 @@ sd_io_1v8_reg: sd_io_1v8_reg {
>  			  3300000 0x0>;
>  		status = "okay";
>  	};
> +
> +	sd_vcc_reg: sd_vcc_reg {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vcc-sd";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-boot-on;
> +		enable-active-high;
> +		gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
this new GPIO has an empty GPIO label, please add it.
> +	};
>  };
>  
>  &firmware {
> @@ -174,6 +184,7 @@ brcmf: wifi@1 {
>  /* EMMC2 is used to drive the SD card */
>  &emmc2 {
>  	vqmmc-supply = <&sd_io_1v8_reg>;
> +	vmmc-supply = <&sd_vcc_reg>;
>  	broken-cd;
>  	status = "okay";
>  };