linux-kernel - Re: [PATCH v5 06/10] arm64: dts: actions: Add DMA Controller for S700

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Message-ID: <20200712172432.GH6110@Mani-XPS-13-9360>
Date:   Sun, 12 Jul 2020 22:54:32 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Amit Singh Tomar <amittomer25@...il.com>
Cc:     andre.przywara@....com, afaerber@...e.de, vkoul@...nel.org,
        robh+dt@...nel.org, dan.j.williams@...el.com,
        cristian.ciocaltea@...il.com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v5 06/10] arm64: dts: actions: Add DMA Controller for S700

On Thu, Jul 02, 2020 at 08:22:52PM +0530, Amit Singh Tomar wrote:
> This commit adds DMA controller present on Actions S700, it differs from
> S900 in terms of number of dma channels and requests.
> 
> Signed-off-by: Amit Singh Tomar <amittomer25@...il.com>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Thanks,
Mani

> ---
> Changes since v4:
> 	* No change.
> Changes since v3:
>         * Fixed typo in commit message.
>         * Placed owl-s700-powergate.h in alphabetical order.
> Changes since v2:
>         * added power-domain property as sps
>           is enabled now and DMA needs it.
> Changes since v1:
>         * No Change.
> Changes since RFC:
>         * No Change.
> ---
>  arch/arm64/boot/dts/actions/s700.dtsi | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/actions/s700.dtsi b/arch/arm64/boot/dts/actions/s700.dtsi
> index f8eb72bb4125..2c78caebf515 100644
> --- a/arch/arm64/boot/dts/actions/s700.dtsi
> +++ b/arch/arm64/boot/dts/actions/s700.dtsi
> @@ -5,6 +5,7 @@
>  
>  #include <dt-bindings/clock/actions,s700-cmu.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/power/owl-s700-powergate.h>
>  #include <dt-bindings/reset/actions,s700-reset.h>
>  
>  / {
> @@ -244,5 +245,19 @@
>  				     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
>  				     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
>  		};
> +
> +		dma: dma-controller@...30000 {
> +			compatible = "actions,s700-dma";
> +			reg = <0x0 0xe0230000 0x0 0x1000>;
> +			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
> +			#dma-cells = <1>;
> +			dma-channels = <10>;
> +			dma-requests = <44>;
> +			clocks = <&cmu CLK_DMAC>;
> +			power-domains = <&sps S700_PD_DMA>;
> +		};
>  	};
>  };
> -- 
> 2.7.4
>