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

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Message-ID: <20231117090640.GB250770@thinkpad>
Date:   Fri, 17 Nov 2023 14:36:40 +0530
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Mrinmay Sarkar <quic_msarkar@...cinc.com>
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 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.

> "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
> 

-- 
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