linux-kernel - Re: [Freedreno] [PATCH v3 4/4] ARM: dts: imx5: add gpu nodes

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Date:   Mon, 3 Dec 2018 15:10:33 -0700
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     Jonathan Marek <jonathan@...ek.ca>
Cc:     freedreno@...ts.freedesktop.org,
        Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, festevam@...il.com,
        Sascha Hauer <s.hauer@...gutronix.de>,
        open list <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>, Chris.Healy@....aero,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        NXP Linux Team <linux-imx@....com>
Subject: Re: [Freedreno] [PATCH v3 4/4] ARM: dts: imx5: add gpu nodes

On Mon, Dec 03, 2018 at 04:18:16PM -0500, Jonathan Marek wrote:
> Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
> ---
>  arch/arm/boot/dts/imx51.dtsi | 17 +++++++++++++++++
>  arch/arm/boot/dts/imx53.dtsi | 17 +++++++++++++++++
>  2 files changed, 34 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
> index 67d462715..e9a7bbce9 100644
> --- a/arch/arm/boot/dts/imx51.dtsi
> +++ b/arch/arm/boot/dts/imx51.dtsi
> @@ -628,5 +628,22 @@
>  				clock-names = "ipg", "ahb";
>  			};
>  		};
> +
> +		gpu: gpu@...00000 {
> +			compatible = "amd,imageon-200.1", "amd,imageon";
> +			reg = <0x30000000 0x20000>;
> +			reg-names = "kgsl_3d0_reg_memory";
> +			interrupts = <12>;
> +			interrupt-names = "kgsl_3d0_irq";
> +			clocks = <&clks IMX5_CLK_GPU3D_GATE>, <&clks IMX5_CLK_GARB_GATE>;
> +			clock-names = "core_clk", "mem_iface_clk";
> +
> +			qcom,gpu-pwrlevels {
> +				compatible = "qcom,gpu-pwrlevels";
> +				qcom,gpu-pwrlevel@0 {
> +					qcom,gpu-freq = <166250000>;
> +				};
> +			};

There shouldn't be any incremental cost in the source code to use OPP; it should
just work. And then this won't give us a further reason to keep the legacy
code around when we decide to dump any pretense of downstream "compatibility".

> +		};
>  	};
>  };
> diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi
> index 207eb557c..586d45586 100644
> --- a/arch/arm/boot/dts/imx53.dtsi
> +++ b/arch/arm/boot/dts/imx53.dtsi
> @@ -838,5 +838,22 @@
>  			reg = <0xf8000000 0x20000>;
>  			clocks = <&clks IMX5_CLK_OCRAM>;
>  		};
> +
> +		gpu: gpu@...00000 {
> +			compatible = "amd,imageon-200.0", "amd,imageon";
> +			reg = <0x30000000 0x20000>;
> +			reg-names = "kgsl_3d0_reg_memory";
> +			interrupts = <12>;
> +			interrupt-names = "kgsl_3d0_irq";
> +			clocks = <&clks IMX5_CLK_GPU3D_GATE>, <&clks IMX5_CLK_GARB_GATE>;
> +			clock-names = "core_clk", "mem_iface_clk";
> +
> +			qcom,gpu-pwrlevels {
> +				compatible = "qcom,gpu-pwrlevels";
> +				qcom,gpu-pwrlevel@0 {
> +					qcom,gpu-freq = <200000000>;
> +				};

Same.

> +			};

> +		};
>  	};
>  };
> -- 
> 2.17.1

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