linux-kernel - Re: [PATCH 5/6] arm64: dts: qcom: sm8550: Additionally manage MXC power domain in camcc

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Message-ID: <0f64e926-8b9e-45ee-b635-d6aeb9c75d9a@linaro.org>
Date: Fri, 22 Aug 2025 11:15:36 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Jagadeesh Kona <quic_jkona@...cinc.com>,
 Dmitry Baryshkov <lumag@...nel.org>, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
 Taniya Das <quic_tdas@...cinc.com>,
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: Re: [PATCH 5/6] arm64: dts: qcom: sm8550: Additionally manage MXC
 power domain in camcc

On 21/08/2025 12:19, Dmitry Baryshkov wrote:
> On Thu, Aug 21, 2025 at 09:16:38AM +0200, Neil Armstrong wrote:
>> From: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
>>
>> Camcc requires both MMCX and MXC rails to be powered ON to configure
>> the camera PLLs on SM8550 platform. Hence add MXC power domain to
>> camcc node on SM8550. While at it, update SM8550_MMCX macro to RPMHPD_MMCX
>> to align towards common macros.
> 
> The last phrase no longer applies.

Ack will fixup

> 
>>
>> Fixes: e271b59e39a6f ("arm64: dts: qcom: sm8550: Add camera clock controller")
>> Reviewed-by: Taniya Das <quic_tdas@...cinc.com>
>> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
>> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
>> Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
>> Signed-off-by: Jagadeesh Kona <quic_jkona@...cinc.com>
>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>> ---
>>   arch/arm64/boot/dts/qcom/sm8550.dtsi | 6 ++++--
>>   1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
>> index d4bffcc244c98e87464cb2a4075c21f3cd368482..54ea21e1778a7c104cdf6865f84a7f8b5a8691ca 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
>> @@ -3625,8 +3625,10 @@ camcc: clock-controller@...0000 {
>>   				 <&bi_tcxo_div2>,
>>   				 <&bi_tcxo_ao_div2>,
>>   				 <&sleep_clk>;
>> -			power-domains = <&rpmhpd RPMHPD_MMCX>;
>> -			required-opps = <&rpmhpd_opp_low_svs>;
>> +			power-domains = <&rpmhpd RPMHPD_MMCX>,
>> +					<&rpmhpd RPMHPD_MXC>;
>> +			required-opps = <&rpmhpd_opp_low_svs>,
>> +					<&rpmhpd_opp_low_svs>;
>>   			#clock-cells = <1>;
>>   			#reset-cells = <1>;
>>   			#power-domain-cells = <1>;
>>
>> -- 
>> 2.34.1
>>
>