linux-kernel - Re: [PATCH 05/11] arm64: dts: qcom: sdm845: drop unused slimbus dmas

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Date:   Sun, 25 Sep 2022 13:57:49 -0500
From:   Steev Klimaszewski <steev@...i.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 05/11] arm64: dts: qcom: sdm845: drop unused slimbus dmas


On 9/23/22 11:14 AM, Krzysztof Kozlowski wrote:
> Bindings document only two DMA channels.  Linux driver also does not use
> remaining rx2/tx2.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sdm845.dtsi | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 2264bba69f84..1213f78a8b7a 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -3828,9 +3828,8 @@ slim: slim@...c0000 {
>   			reg = <0 0x171c0000 0 0x2c000>;
>   			interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
>   
> -			dmas = <&slimbam 3>, <&slimbam 4>,
> -				<&slimbam 5>, <&slimbam 6>;
> -			dma-names = "rx", "tx", "tx2", "rx2";
> +			dmas = <&slimbam 3>, <&slimbam 4>;
> +			dma-names = "rx", "tx";
>   
>   			iommus = <&apps_smmu 0x1806 0x0>;
>   			#address-cells = <1>;

Tested on Lenovo Yoga C630

Tested-by: Steev Klimaszewski <steev@...i.org>