linux-kernel - Re: [RFT PATCH] arm64: dts: qcom: sdm850-c630: add missing panel supply

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Message-ID: <863e04e8-3e14-d8bc-f9b4-8e184b545767@linaro.org>
Date:   Mon, 26 Jun 2023 11:47:47 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Caleb Connolly <caleb.connolly@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFT PATCH] arm64: dts: qcom: sdm850-c630: add missing panel
 supply

On 24.06.2023 16:56, Caleb Connolly wrote:
> 
> 
> On 17/06/2023 17:15, Krzysztof Kozlowski wrote:
>> Panel bindings (boe,nv133fhm-n61) require supply which here actually can
>> be turned on/off via GPIO control:
>>
>>   sdm850-lenovo-yoga-c630.dtb: panel: 'power-supply' is a required property
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> I've been running an equivalent patch for a while, so
> 
> Tested-by: Caleb Connolly <caleb.connolly@...aro.org>
> 
> The dsi bridge vcc and vcca supplies are also missing, they're powered
> from vreg_l2a_1p2 and controlled by pm8998_gpio 9.
Mind submitting an incremental patch?

Konrad
>>
>> ---
>>
>> Not tested on hardware
>> ---
>>  .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 20 +++++++++++++++++++
>>  1 file changed, 20 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
>> index cfbc4fc1eba9..3d871567cf81 100644
>> --- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
>> +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
>> @@ -87,6 +87,25 @@ sn65dsi86_refclk: sn65dsi86-refclk {
>>  		clock-frequency = <19200000>;
>>  	};
>>  
>> +	vph_pwr: regulator-vph-pwr {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "vph_pwr";
>> +		regulator-min-microvolt = <3700000>;
>> +		regulator-max-microvolt = <3700000>;
>> +	};
>> +
>> +	vlcm_3v3: regulator-vlcm-3v3 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "vlcm_3v3";
>> +
>> +		vin-supply = <&vph_pwr>;
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +
>> +		gpio = <&tlmm 88 GPIO_ACTIVE_HIGH>;
>> +		enable-active-high;
>> +	};
>> +
>>  	backlight: backlight {
>>  		compatible = "pwm-backlight";
>>  		pwms = <&sn65dsi86 1000000>;
>> @@ -419,6 +438,7 @@ aux-bus {
>>  			panel: panel {
>>  				compatible = "boe,nv133fhm-n61";
>>  				backlight = <&backlight>;
>> +				power-supply = <&vlcm_3v3>;
>>  
>>  				port {
>>  					panel_in_edp: endpoint {
>