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Message-ID: <990cc7cf-1cc9-4af4-9d94-994e92b1c7f0@linaro.org>
Date: Tue, 23 Jan 2024 19:29:46 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Odelu Kukatla <quic_okukatla@...cinc.com>
Cc: georgi.djakov@...aro.org, cros-qcom-dts-watchers@...omium.org,
 Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [4/4] arm64: dts: qcom: sc7280: Add clocks for QOS configuration



On 1/22/24 18:43, Dmitry Baryshkov wrote:
> On Mon, 22 Jan 2024 at 16:39, Odelu Kukatla <quic_okukatla@...cinc.com> wrote:
>>
>> Add clock handles for required clocks to be enabled for
>> configuring QoS on sc7280.
>>
>> Change-Id: I58991300ff1d8d2865763d4e79ee81c03586249e
>> Signed-off-by: Odelu Kukatla <quic_okukatla@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++
>>   1 file changed, 3 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index 83b5b76ba179..73acf1bd0f97 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -2099,6 +2099,8 @@
>>                          reg = <0 0x016e0000 0 0x1c080>;
>>                          #interconnect-cells = <2>;
>>                          qcom,bcm-voters = <&apps_bcm_voter>;
>> +                       clocks = <&gcc GCC_AGGRE_UFS_PHY_AXI_CLK>,
>> +                               <&gcc GCC_AGGRE_USB3_PRIM_AXI_CLK>;
>>                  };
>>
>>                  aggre2_noc: interconnect@...0000 {
>> @@ -2106,6 +2108,7 @@
>>                          compatible = "qcom,sc7280-aggre2-noc";
>>                          #interconnect-cells = <2>;
>>                          qcom,bcm-voters = <&apps_bcm_voter>;
>> +                       clocks = <&rpmhcc RPMH_IPA_CLK>;
> 
> Is there any reason to write QoS for the IPA before the IPA starts
> poking around? The same question applies to aggre1 NoC.

Yes, as the NIUs require a clock source which may or may not be
the peripheral's clock

Konrad

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