linux-kernel - Re: [PATCH] arm64: dts: allwinner: a64: Add device node for Mali-400 GPU

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Date:   Wed, 24 Oct 2018 18:07:09 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH] arm64: dts: allwinner: a64: Add device node for Mali-400
 GPU

On Tue, Oct 23, 2018 at 09:42:03PM +0530, Jagan Teki wrote:
> Add support for Allwinner A64 has Mali-400MP2.
> 
> All interrupt lines are mentioned in the manual so used the same.
> Used 408MHz as assigned clock rate used by BSP, so used the same as
> well.
> 
> Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> ---
> Note:
> - Modules was able to load it on 4.19. 
> 
>  .../bindings/gpu/arm,mali-utgard.txt          |  1 +
>  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 25 +++++++++++++++++++
>  2 files changed, 26 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-utgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-utgard.txt
> index 63cd91176a68..a0ee62a5b221 100644
> --- a/Documentation/devicetree/bindings/gpu/arm,mali-utgard.txt
> +++ b/Documentation/devicetree/bindings/gpu/arm,mali-utgard.txt
> @@ -11,6 +11,7 @@ Required properties:
>        + allwinner,sun4i-a10-mali
>        + allwinner,sun7i-a20-mali
>        + allwinner,sun8i-h3-mali
> +      + allwinner,sun50i-a64-mali
>        + allwinner,sun50i-h5-mali
>        + amlogic,meson-gxbb-mali
>        + amlogic,meson-gxl-mali

Please make a separate patch for this change.

> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> index f82e6b165d57..2db3aa151902 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> @@ -812,6 +812,31 @@
>  			};
>  		};
>  
> +		mali: gpu@...0000 {
> +			compatible = "allwinner,sun50i-a64-mali", "arm,mali-400";
> +			reg = <0x01c40000 0x10000>;
> +			interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "gp",
> +					  "gpmmu",
> +					  "pp0",
> +					  "ppmmu0",
> +					  "pp1",
> +					  "ppmmu1",
> +					  "pmu";
> +			clocks = <&ccu CLK_BUS_GPU>, <&ccu CLK_GPU>;
> +			clock-names = "bus", "core";
> +			resets = <&ccu RST_BUS_GPU>;
> +
> +			assigned-clocks = <&ccu CLK_GPU>;
> +			assigned-clock-rates = <408000000>;

This is not needed and should be done in the driver.

Thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com