linux-kernel - Re: [PATCH v3 3/3] arm64: dts: qcom: sa8775p: Mark PCIe controller as cache coherent

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Message-ID: <d432e662-869b-2176-834f-c05ef47b4bcd@quicinc.com>
Date:   Tue, 21 Nov 2023 20:06:59 +0530
From:   Mrinmay Sarkar <quic_msarkar@...cinc.com>
To:     Manivannan Sadhasivam <mani@...nel.org>
CC:     <agross@...nel.org>, <andersson@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <quic_shazhuss@...cinc.com>, <quic_nitegupt@...cinc.com>,
        <quic_ramkri@...cinc.com>, <quic_nayiluri@...cinc.com>,
        <dmitry.baryshkov@...aro.org>, <robh@...nel.org>,
        <quic_krichai@...cinc.com>, <quic_vbadigan@...cinc.com>,
        <quic_parass@...cinc.com>, <quic_schintav@...cinc.com>,
        <quic_shijjose@...cinc.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>
Subject: Re: [PATCH v3 3/3] arm64: dts: qcom: sa8775p: Mark PCIe controller as
 cache coherent


On 11/17/2023 2:36 PM, Manivannan Sadhasivam wrote:
> On Wed, Nov 15, 2023 at 06:07:01PM +0530, Mrinmay Sarkar wrote:
>> The PCIe controller on SA8775P supports cache coherency, hence add the
> "PCIe RC controller" both in subject and description.

This is for EP so will make as "PCIe EP controller"

--Mrinmay

>> "dma-coherent" property to mark it as such.
>>
>> Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
> With that,
>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
>
> - Mani
>
>> ---
>>   arch/arm64/boot/dts/qcom/sa8775p.dtsi | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> index 7eab458..ab01efe 100644
>> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> @@ -3620,6 +3620,7 @@
>>   				<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_0 0>;
>>   		interconnect-names = "pcie-mem", "cpu-pcie";
>>   
>> +		dma-coherent;
>>   		iommus = <&pcie_smmu 0x0000 0x7f>;
>>   		resets = <&gcc GCC_PCIE_0_BCR>;
>>   		reset-names = "core";
>> -- 
>> 2.7.4
>>