linux-kernel - Re: [PATCH v2 1/2] arm64: dts: qcom: sm8650-mtp: add PM8010 regulators

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Date: Thu, 25 Jan 2024 00:36:29 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: David Collins <quic_collinsd@...cinc.com>, quic_fenglinw@...cinc.com,
 kernel@...cinc.com, Bjorn Andersson <andersson@...nel.org>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v2 1/2] arm64: dts: qcom: sm8650-mtp: add PM8010
 regulators



On 1/24/24 20:15, David Collins wrote:
> On 1/23/24 00:49, Fenglin Wu via B4 Relay wrote:
>> From: Fenglin Wu <quic_fenglinw@...cinc.com>
>>
>> Add PM8010 regulator device nodes for sm8650-mtp board.
>>
>> Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
>> Signed-off-by: Fenglin Wu <quic_fenglinw@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sm8650-mtp.dts | 118 ++++++++++++++++++++++++++++++++
>>   1 file changed, 118 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
>> index 9d916edb1c73..3791971efee6 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
>> +++ b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
>> @@ -428,6 +428,124 @@ vreg_l3i_1p2: ldo3 {
>>   						   RPMH_REGULATOR_MODE_HPM>;
>>   		};
>>   	};
>> +
>> +	regulators-6 {
>> +		compatible = "qcom,pm8010-rpmh-regulators";
>> +		qcom,pmic-id = "m";
>> +
>> +		vdd-l1-l2-supply = <&vreg_s1c_1p2>;
>> +		vdd-l3-l4-supply = <&vreg_bob2>;
>> +		vdd-l5-supply = <&vreg_s6c_1p8>;
>> +		vdd-l6-l7-supply = <&vreg_bob1>;
> 
> Please replace this line with:
> 
> vdd-l6-supply = <&vreg_bob1>;
> vdd-l7-supply = <&vreg_bob1>;
> 
>> +
>> +		vreg_l1m_1p1: ldo1 {
>> +			regulator-name = "vreg_l1m_1p1";
>> +			regulator-min-microvolt = <1104000>;
>> +			regulator-max-microvolt = <1104000>;
>> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> 
> Optional:
> PM8010 L1 and L2 physically support LPM vs HPM configuration.
> Therefore, these lines could be added here to allow such configuration
> by software at runtime:
> 
> regulator-allow-set-load;
> regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
> 			   RPMH_REGULATOR_MODE_HPM>;

David,

I was under the impression that *all* RPMh regulators support
modesetting. Would that be an incorrect assumption to make?

Konrad