linux-kernel - Re: [PATCH 2/4] arm64: dts: rockchip: add ARM Mali GPU node for RK3399 SoCs

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Message-ID: <4066931.s766IOqHgB@phil>
Date:   Wed, 12 Jul 2017 09:19:42 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Caesar Wang <wxt@...k-chips.com>
Cc:     linux-rockchip@...ts.infradead.org, rocky.hao@...k-chips.com,
        devicetree@...r.kernel.org, William wu <wulf@...k-chips.com>,
        Elaine Zhang <zhangqing@...k-chips.com>,
        Kever Yang <kever.yang@...k-chips.com>,
        Brian Norris <briannorris@...omium.org>,
        linux-kernel@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>,
        Douglas Anderson <dianders@...omium.org>,
        linux-arm-kernel@...ts.infradead.org,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Roger Chen <roger.chen@...k-chips.com>
Subject: Re: [PATCH 2/4] arm64: dts: rockchip: add ARM Mali GPU node for RK3399 SoCs

Hi Caesar,

Am Mittwoch, 12. Juli 2017, 14:29:28 CEST schrieb Caesar Wang:
> Add Mali GPU device tree node for the RK3399 SoCs, with devfreq
> opp table.
> 
> RK3399 and RK3399-OP1 SoCs have a different recommendation table with
> gpu opp. As the ARM's mali driver found on
> https://developer.arm.com/products/software/mali-drivers/midgard-kernel.
> 
> Signed-off-by: Caesar Wang <wxt@...k-chips.com>
> ---
> 
>  arch/arm64/boot/dts/rockchip/rk3399-op1-opp.dtsi | 33 ++++++++++++++++++++++++
>  arch/arm64/boot/dts/rockchip/rk3399-opp.dtsi     | 33 ++++++++++++++++++++++++
>  arch/arm64/boot/dts/rockchip/rk3399.dtsi         | 16 ++++++++++++
>  3 files changed, 82 insertions(+)

[...]

> diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> index 1cbd7a2..8c6438b 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> @@ -1443,6 +1443,22 @@
>  		status = "disabled";
>  	};
>  
> +	gpu: gpu@...a0000 {
> +		compatible = "arm,rk3399-mali",
> +			     "arm,malit860",
> +			     "arm,malit86x",
> +			     "arm,malit8xx";

no wildcards and correct compatibles please.
The binding specifies arm,mali-t860 for your chip and the soc
specific compatible needs a rockchip vendor, so you need

	compatible = "rockchip,rk3399-mali", "arm,mali-t860";


> +		reg = <0x0 0xff9a0000 0x0 0x10000>;
> +		interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH 0>,
> +			     <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH 0>,
> +			     <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH 0>;
> +		interrupt-names = "GPU", "JOB", "MMU";

interrupt names are job, mmu, gpu in lower case. The out-of-tree driver
will need to conform to that.

> +		clocks = <&cru ACLK_GPU>;
> +		clock-names = "clk_mali";

no clock-names property, as midgard malis only have one clock input


Heiko