linux-kernel - Re: [PATCH] arm64: dts: qcom: qcm6490-idp: Update protected clocks list

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Message-ID: <72cc2c52-1d0d-4a60-93da-14acd5947f1f@quicinc.com>
Date: Thu, 27 Feb 2025 09:42:39 +0530
From: Taniya Das <quic_tdas@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>
CC: Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Ajit Pandey <quic_ajipan@...cinc.com>,
        Imran Shaik
	<quic_imrashai@...cinc.com>,
        Jagadeesh Kona <quic_jkona@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: qcom: qcm6490-idp: Update protected clocks
 list



On 2/26/2025 10:12 AM, Bjorn Andersson wrote:
> On Thu, Feb 06, 2025 at 03:43:21PM +0530, Taniya Das wrote:
>> Certain clocks are not accessible on QCM6490-IDP board,
>> thus mark them as protected.
>>
>> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
>> ---
>> Mark few clocks as protected on IDP of QCM6490.
>>
>> This patchset is separated out from the series[1] to remove dependency from
>> the LPASS reset.
>> [1]: https://lore.kernel.org/all/20240816-qcm6490-lpass-reset-v1-0-a11f33cad3c5@quicinc.com/
>> ---
>>  arch/arm64/boot/dts/qcom/qcm6490-idp.dts | 21 +++++++++++++++++++++
> 
> I merged the patch adding this board in November 2023, are you saying
> that for the last 15 months no one has actually booted it!?
> 

I am not sure, I had got request to help boot the board which was not
due to these clocks.

>>  1 file changed, 21 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
>> index 9209efcc49b57a853c4dd55ac52cd4dc98d7fe86..346b9a377e611cd3e32cf00d44e87b363bada07a 100644
>> --- a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
>> +++ b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
>> @@ -759,3 +759,24 @@ &wifi {
>>  
>>  	status = "okay";
>>  };
>> +
>> +&gcc {
> 
> As you know, we sort nodes by address (if they have one), then
> alphabetically. So this does not belong here.
> 
> Regards,
> Bjorn
> 
>> +	protected-clocks = <GCC_AGGRE_NOC_PCIE_1_AXI_CLK> ,<GCC_PCIE_1_AUX_CLK>,
>> +			   <GCC_PCIE_1_AUX_CLK_SRC>, <GCC_PCIE_1_CFG_AHB_CLK>,
>> +			   <GCC_PCIE_1_MSTR_AXI_CLK>, <GCC_PCIE_1_PHY_RCHNG_CLK_SRC>,
>> +			   <GCC_PCIE_1_PIPE_CLK>, <GCC_PCIE_1_PIPE_CLK_SRC>,
>> +			   <GCC_PCIE_1_SLV_AXI_CLK>, <GCC_PCIE_1_SLV_Q2A_AXI_CLK>,
>> +			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>, <GCC_QSPI_CORE_CLK>,
>> +			   <GCC_QSPI_CORE_CLK_SRC>,<GCC_USB30_SEC_MASTER_CLK>,
>> +			   <GCC_USB30_SEC_MASTER_CLK_SRC>, <GCC_USB30_SEC_MOCK_UTMI_CLK>,
>> +			   <GCC_USB30_SEC_MOCK_UTMI_CLK_SRC>,
>> +			   <GCC_USB30_SEC_MOCK_UTMI_POSTDIV_CLK_SRC>, <GCC_USB30_SEC_SLEEP_CLK>,
>> +			   <GCC_USB3_SEC_PHY_AUX_CLK>, <GCC_USB3_SEC_PHY_AUX_CLK_SRC>,
>> +			   <GCC_USB3_SEC_PHY_COM_AUX_CLK>, <GCC_USB3_SEC_PHY_PIPE_CLK>,
>> +			   <GCC_USB3_SEC_PHY_PIPE_CLK_SRC>, <GCC_CFG_NOC_LPASS_CLK>,
>> +			   <GCC_MSS_GPLL0_MAIN_DIV_CLK_SRC>, <GCC_MSS_CFG_AHB_CLK>,
>> +			   <GCC_MSS_OFFLINE_AXI_CLK>, <GCC_MSS_SNOC_AXI_CLK>,
>> +			   <GCC_MSS_Q6_MEMNOC_AXI_CLK>, <GCC_MSS_Q6SS_BOOT_CLK_SRC>,
>> +			   <GCC_SEC_CTRL_CLK_SRC>, <GCC_WPSS_AHB_CLK>,
>> +			   <GCC_WPSS_AHB_BDG_MST_CLK>, <GCC_WPSS_RSCP_CLK>;
>> +};
>>
>> ---
>> base-commit: 808eb958781e4ebb6e9c0962af2e856767e20f45
>> change-id: 20250206-protected_clock_qcm6490-4019e6a61d0b
>>
>> Best regards,
>> -- 
>> Taniya Das <quic_tdas@...cinc.com>
>>