linux-kernel - Re: [PATCH 12/14] arm64: dts: qcom: sm8550: Drop PCIE_AUX_CLK from pcie

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Date: Wed, 24 Jan 2024 13:26:37 +0100
From: neil.armstrong@...aro.org
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>, Vinod Koul <vkoul@...nel.org>,
 Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring
 <robh+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
 cros-qcom-dts-watchers@...omium.org
Cc: linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/14] arm64: dts: qcom: sm8550: Drop PCIE_AUX_CLK from
 pcie_phy node

On 24/01/2024 08:36, Manivannan Sadhasivam wrote:
> PCIe PHY hw doesn't require PCIE_AUX_CLK for functioning. This clock is
> only required by the PCIe controller. Hence drop it from pcie_phy node.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm8550.dtsi | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> index ee1ba5a8c8fc..f074683f7940 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> @@ -1760,13 +1760,11 @@ pcie0_phy: phy@...6000 {
>   			compatible = "qcom,sm8550-qmp-gen3x2-pcie-phy";
>   			reg = <0 0x01c06000 0 0x2000>;
>   
> -			clocks = <&gcc GCC_PCIE_0_AUX_CLK>,
> -				 <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
> +			clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
>   				 <&tcsr TCSR_PCIE_0_CLKREF_EN>,
>   				 <&gcc GCC_PCIE_0_PHY_RCHNG_CLK>,
>   				 <&gcc GCC_PCIE_0_PIPE_CLK>;
> -			clock-names = "aux", "cfg_ahb", "ref", "rchng",
> -				      "pipe";
> +			clock-names = "cfg_ahb", "ref", "rchng", "pipe";
>   
>   			resets = <&gcc GCC_PCIE_0_PHY_BCR>;
>   			reset-names = "phy";
> 


Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8550-HDK