linux-kernel - [RFC PATCH 4/4] arm64: dts: imx8mm: Add GPU nodes for 2D and 3D core using Etnaviv

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Date:   Thu, 30 Apr 2020 12:46:17 +0000
From:   Schrempf Frieder <frieder.schrempf@...tron.de>
To:     Adam Ford <aford173@...il.com>, Anson Huang <Anson.Huang@....com>,
        Christian Gmeiner <christian.gmeiner@...il.com>,
        Daniel Baluta <daniel.baluta@....com>,
        Fabio Estevam <festevam@...il.com>,
        Schrempf Frieder <frieder.schrempf@...tron.de>,
        Leonard Crestez <leonard.crestez@....com>,
        "Li Jun" <jun.li@....com>, Lucas Stach <l.stach@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Peng Fan <peng.fan@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Russell King <linux+etnaviv@...linux.org.uk>,
        "Sascha Hauer" <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        "S.j. Wang" <shengjiu.wang@....com>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "etnaviv@...ts.freedesktop.org" <etnaviv@...ts.freedesktop.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 4/4] arm64: dts: imx8mm: Add GPU nodes for 2D and 3D core
 using Etnaviv

From: Frieder Schrempf <frieder.schrempf@...tron.de>

According to the documents, the i.MX8M-Mini features a GC320 and a
GCNanoUltra GPU core. Etnaviv detects them as:

	etnaviv-gpu 38000000.gpu: model: GC600, revision: 4653
	etnaviv-gpu 38008000.gpu: model: GC520, revision: 5341

This seems to work fine more or less without any changes to the HWDB,
which still might be needed in the future to correct some features,
etc.

Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 36 +++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index cc7152ecedd9..1dd0a6e849d3 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -937,6 +937,42 @@
 			status = "disabled";
 		};
 
+		gpu_3d: gpu@...00000 {
+			compatible = "vivante,gc";
+			reg = <0x38000000 0x8000>;
+			interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk IMX8MM_CLK_GPU_AHB>,
+				 <&clk IMX8MM_CLK_GPU_BUS_ROOT>,
+				 <&clk IMX8MM_CLK_GPU3D_ROOT>;
+			clock-names = "reg", "bus", "core";
+			assigned-clocks = <&clk IMX8MM_CLK_GPU3D_SRC>,
+					<&clk IMX8MM_CLK_GPU_AXI>,
+					<&clk IMX8MM_CLK_GPU_AHB>,
+					<&clk IMX8MM_GPU_PLL_OUT>;
+			assigned-clock-parents = <&clk IMX8MM_GPU_PLL_OUT>,
+					<&clk IMX8MM_SYS_PLL1_800M>,
+					<&clk IMX8MM_SYS_PLL1_800M>;
+			assigned-clock-rates = <0>, <0>,<400000000>,<1000000000>;
+		};
+
+		gpu_2d: gpu@...08000 {
+			compatible = "vivante,gc";
+			reg = <0x38008000 0x8000>;
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk IMX8MM_CLK_GPU_AHB>,
+				 <&clk IMX8MM_CLK_GPU_BUS_ROOT>,
+				 <&clk IMX8MM_CLK_GPU2D_ROOT>;
+			clock-names = "reg", "bus", "core";
+			assigned-clocks = <&clk IMX8MM_CLK_GPU2D_SRC>,
+					<&clk IMX8MM_CLK_GPU_AXI>,
+					<&clk IMX8MM_CLK_GPU_AHB>,
+					<&clk IMX8MM_GPU_PLL_OUT>;
+			assigned-clock-parents = <&clk IMX8MM_GPU_PLL_OUT>,
+					<&clk IMX8MM_SYS_PLL1_800M>,
+					<&clk IMX8MM_SYS_PLL1_800M>;
+			assigned-clock-rates = <0>, <0>,<400000000>,<1000000000>;
+		};
+
 		gic: interrupt-controller@...00000 {
 			compatible = "arm,gic-v3";
 			reg = <0x38800000 0x10000>, /* GIC Dist */
-- 
2.17.1