linux-kernel - Re: [PATCH] arm64: dts: qcom: sm7225-fairphone-fp4: Enable SD card

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Date:   Thu, 10 Nov 2022 16:18:42 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Luca Weiss <luca.weiss@...rphone.com>,
        linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sm7225-fairphone-fp4: Enable SD card



On 10/11/2022 16:15, Luca Weiss wrote:
> Fairphone 4 uses sdhc_2 for the SD card, configure the pins for it and
> enable it.
> 
> The regulators which are exclusively used for SDHCI have their maximum
> voltage decreased to what downstream sets on the consumer side, like on
> many other platforms and allowed to set the load.
> 
> Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>   .../boot/dts/qcom/sm7225-fairphone-fp4.dts    | 39 ++++++++++++++++++-
>   1 file changed, 37 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> index 30c94fd4fe61..1cb14051ab1b 100644
> --- a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> +++ b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> @@ -279,8 +279,12 @@ vreg_l5e: ldo5 {
>   
>   		vreg_l6e: ldo6 {
>   			regulator-min-microvolt = <1700000>;
> -			regulator-max-microvolt = <3544000>;
> +			regulator-max-microvolt = <2950000>;
>   			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +			regulator-allow-set-load;
> +			regulator-allowed-modes =
> +				<RPMH_REGULATOR_MODE_LPM
> +				 RPMH_REGULATOR_MODE_HPM>;
>   		};
>   
>   		vreg_l7e: ldo7 {
> @@ -297,8 +301,12 @@ vreg_l8e: ldo8 {
>   
>   		vreg_l9e: ldo9 {
>   			regulator-min-microvolt = <2700000>;
> -			regulator-max-microvolt = <3544000>;
> +			regulator-max-microvolt = <2960000>;
>   			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +			regulator-allow-set-load;
> +			regulator-allowed-modes =
> +				<RPMH_REGULATOR_MODE_LPM
> +				 RPMH_REGULATOR_MODE_HPM>;
>   		};
>   
>   		vreg_l10e: ldo10 {
> @@ -424,6 +432,33 @@ &qupv3_id_1 {
>   	status = "okay";
>   };
>   
> +&sdc2_off_state {
> +	sd-cd-pins {
> +		pins = "gpio94";
> +		function = "gpio";
> +		drive-strength = <2>;
> +		bias-disable;
> +	};
> +};
> +
> +&sdc2_on_state {
> +	sd-cd-pins {
> +		pins = "gpio94";
> +		function = "gpio";
> +		drive-strength = <2>;
> +		bias-pull-up;
> +	};
> +};
> +
> +&sdhc_2 {
> +	vmmc-supply = <&vreg_l9e>;
> +	vqmmc-supply = <&vreg_l6e>;
> +
> +	cd-gpios = <&tlmm 94 GPIO_ACTIVE_LOW>;
> +
> +	status = "okay";
> +};
> +
>   &tlmm {
>   	gpio-reserved-ranges = <13 4>, <56 2>;
>   };