linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: sm6125: Add GPI DMA nodes

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Date:   Sun, 2 Oct 2022 10:15:08 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Martin Botka <martin.botka@...ainline.org>, martin.botka1@...il.com
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Jami Kettunen <jamipkettunen@...ainline.org>,
        Paul Bouchara <paul.bouchara@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] arm64: dts: qcom: sm6125: Add GPI DMA nodes

On 01/10/2022 20:55, Martin Botka wrote:
> This commit adds and configures GPI DMA nodes.
> 
> Signed-off-by: Martin Botka <martin.botka@...ainline.org>
> ---
>  arch/arm64/boot/dts/qcom/sm6125.dtsi | 37 ++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6125.dtsi b/arch/arm64/boot/dts/qcom/sm6125.dtsi
> index d35ea4474234..7e135041bd42 100644
> --- a/arch/arm64/boot/dts/qcom/sm6125.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6125.dtsi
> @@ -6,6 +6,7 @@
>  #include <dt-bindings/clock/qcom,dispcc-sm6125.h>
>  #include <dt-bindings/clock/qcom,gcc-sm6125.h>
>  #include <dt-bindings/clock/qcom,rpmcc.h>
> +#include <dt-bindings/dma/qcom-gpi.h>
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/power/qcom-rpmpd.h>
> @@ -1076,6 +1077,42 @@ sdhc_2: mmc@...4000 {
>  			status = "disabled";
>  		};
>  
> +		gpi_dma0: dma-controller@...0000 {
> +			compatible = "qcom,sm6125-gpi-dma";

You will need here sdm845 fallback.

> +			#dma-cells = <5>;
> +			reg = <0x04a00000 0x60000>;
> +			iommus = <&apps_smmu 0x0136 0x0>;
> +			dma-channels = <8>;
> +			dma-channel-mask = <0x1f>;
> +			interrupts = <GIC_SPI 335 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 336 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 337 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 338 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 339 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 340 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 342 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "okay";

No need, its okay by default.

Both comments apply everywhere.

Best regards,
Krzysztof