linux-kernel - Re: [PATCH v1 4/4] arm64: dts: qcom: msm8998: Add mmcc node

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Date:   Tue, 5 Feb 2019 15:10:40 -0700
From:   Jeffrey Hugo <jhugo@...eaurora.org>
To:     Stephen Boyd <sboyd@...nel.org>, andy.gross@...aro.org,
        bjorn.andersson@...aro.org, david.brown@...aro.org
Cc:     marc.w.gonzalez@...e.fr, mturquette@...libre.com,
        robh+dt@...nel.org, mark.rutland@....com,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v1 4/4] arm64: dts: qcom: msm8998: Add mmcc node

On 2/5/2019 3:03 PM, Stephen Boyd wrote:
> Quoting Jeffrey Hugo (2019-01-30 08:36:24)
>> diff --git a/arch/arm64/boot/dts/qcom/msm8998.dtsi b/arch/arm64/boot/dts/qcom/msm8998.dtsi
>> index 7136ab1..5673a65 100644
>> --- a/arch/arm64/boot/dts/qcom/msm8998.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/msm8998.dtsi
>> @@ -814,6 +814,21 @@
>>                          status = "disabled";
>>                  };
>>   
>> +               mmcc: clock-controller@...0000 {
>> +                       compatible = "qcom,mmcc-msm8998";
>> +                       #clock-cells = <1>;
>> +                       #reset-cells = <1>;
>> +                       #power-domain-cells = <1>;
>> +                       reg = <0x0c8c0000 0x40000>;
>> +
>> +                       clock-names =
>> +                               "xo",
> 
> Weird newline here. Please put "xo" on the same line as clock-names.
> 
>> +                               "gpll0";
>> +                       clocks =
>> +                               <&rpmcc RPM_SMD_XO_CLK_SRC>,
>> +                               <&gcc GPLL0_OUT_MAIN>;
> 
> Ah ok, so only the multimedia clks get the xo clk from rpm for now?
> 

Yes.  With this entire series, its possible to retrofit GCC, but I 
didn't tackle that since we'd need to consider backwards compatibility. 
I hope to do this moving forward though.

-- 
Jeffrey Hugo
Qualcomm Datacenter Technologies as an affiliate of Qualcomm 
Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.