arm64: dts: mt8183: Add node for the Mali GPU

Add a basic GPU node for mt8183, as well as OPP table.

Note that with the current panfrost driver, devfreq is not
actually functional, as the we do not have platform-specific
support for >1 supplies. Also, we are missing code to handle
frequency change, as the GPU frequency needs to be switched
away to a stable 26Mhz clock during the transition.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Link: https://lore.kernel.org/r/20210521200038.v14.1.I9f45f5c1f975422d58b5904d11546349e9ccdc94@changeid
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

4 files changed, 120 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
index edff1e03e6fe..7bc0a6a7fadf 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
@@ -42,6 +42,11 @@
 	status = "okay";
 };
 
+&gpu {
+	mali-supply = <&mt6358_vgpu_reg>;
+	sram-supply = <&mt6358_vsram_gpu_reg>;
+};
+
 &i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c_pins_0>;
diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index ebcab91d219a..ae549d55a94f 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -279,6 +279,11 @@
 	};
 };
 
+&gpu {
+	mali-supply = <&mt6358_vgpu_reg>;
+	sram-supply = <&mt6358_vsram_gpu_reg>;
+};
+
 &i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins>;
diff --git a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
index 0aff5eb52e88..ee912825cfc6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-pumpkin.dts
@@ -68,6 +68,11 @@
 	status = "okay";
 };
 
+&gpu {
+	mali-supply = <&mt6358_vgpu_reg>;
+	sram-supply = <&mt6358_vsram_gpu_reg>;
+};
+
 &i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c_pins_0>;
diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 833955d0ea3c..f90df6439c08 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -197,6 +197,91 @@
 		};
 	};
 
+	gpu_opp_table: opp_table0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-300000000 {
+			opp-hz = /bits/ 64 <300000000>;
+			opp-microvolt = <625000>, <850000>;
+		};
+
+		opp-320000000 {
+			opp-hz = /bits/ 64 <320000000>;
+			opp-microvolt = <631250>, <850000>;
+		};
+
+		opp-340000000 {
+			opp-hz = /bits/ 64 <340000000>;
+			opp-microvolt = <637500>, <850000>;
+		};
+
+		opp-360000000 {
+			opp-hz = /bits/ 64 <360000000>;
+			opp-microvolt = <643750>, <850000>;
+		};
+
+		opp-380000000 {
+			opp-hz = /bits/ 64 <380000000>;
+			opp-microvolt = <650000>, <850000>;
+		};
+
+		opp-400000000 {
+			opp-hz = /bits/ 64 <400000000>;
+			opp-microvolt = <656250>, <850000>;
+		};
+
+		opp-420000000 {
+			opp-hz = /bits/ 64 <420000000>;
+			opp-microvolt = <662500>, <850000>;
+		};
+
+		opp-460000000 {
+			opp-hz = /bits/ 64 <460000000>;
+			opp-microvolt = <675000>, <850000>;
+		};
+
+		opp-500000000 {
+			opp-hz = /bits/ 64 <500000000>;
+			opp-microvolt = <687500>, <850000>;
+		};
+
+		opp-540000000 {
+			opp-hz = /bits/ 64 <540000000>;
+			opp-microvolt = <700000>, <850000>;
+		};
+
+		opp-580000000 {
+			opp-hz = /bits/ 64 <580000000>;
+			opp-microvolt = <712500>, <850000>;
+		};
+
+		opp-620000000 {
+			opp-hz = /bits/ 64 <620000000>;
+			opp-microvolt = <725000>, <850000>;
+		};
+
+		opp-653000000 {
+			opp-hz = /bits/ 64 <653000000>;
+			opp-microvolt = <743750>, <850000>;
+		};
+
+		opp-698000000 {
+			opp-hz = /bits/ 64 <698000000>;
+			opp-microvolt = <768750>, <868750>;
+		};
+
+		opp-743000000 {
+			opp-hz = /bits/ 64 <743000000>;
+			opp-microvolt = <793750>, <893750>;
+		};
+
+		opp-800000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <825000>, <925000>;
+		};
+	};
+
 	pmu-a53 {
 		compatible = "arm,cortex-a53-pmu";
 		interrupt-parent = <&gic>;
@@ -1118,6 +1203,26 @@
 			#clock-cells = <1>;
 		};
 
+		gpu: gpu@13040000 {
+			compatible = "mediatek,mt8183-mali", "arm,mali-bifrost";
+			reg = <0 0x13040000 0 0x4000>;
+			interrupts =
+				<GIC_SPI 280 IRQ_TYPE_LEVEL_LOW>,
+				<GIC_SPI 279 IRQ_TYPE_LEVEL_LOW>,
+				<GIC_SPI 278 IRQ_TYPE_LEVEL_LOW>;
+			interrupt-names = "job", "mmu", "gpu";
+
+			clocks = <&topckgen CLK_TOP_MFGPLL_CK>;
+
+			power-domains =
+				<&spm MT8183_POWER_DOMAIN_MFG_CORE0>,
+				<&spm MT8183_POWER_DOMAIN_MFG_CORE1>,
+				<&spm MT8183_POWER_DOMAIN_MFG_2D>;
+			power-domain-names = "core0", "core1", "core2";
+
+			operating-points-v2 = <&gpu_opp_table>;
+		};
+
 		mmsys: syscon@14000000 {
 			compatible = "mediatek,mt8183-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;