arm64: dts: mt8195: Add panfrost node for Mali-G57 Valhall Natt GPU

Add GPU support through panfrost for the Mali-G57 GPU on MT8195
with its OPP table but keep it in disabled state.

This is expected to be enabled only on boards which make use of
the GPU.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230301095523.428461-16-angelogioacchino.delregno@collabora.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8195.dtsi

@@ -333,6 +333,76 @@ performance: performance-controller@11bc10 {
 		#performance-domain-cells = <1>;
 	};
 
+	gpu_opp_table: opp-table-gpu {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-390000000 {
+			opp-hz = /bits/ 64 <390000000>;
+			opp-microvolt = <625000>;
+		};
+		opp-410000000 {
+			opp-hz = /bits/ 64 <410000000>;
+			opp-microvolt = <631250>;
+		};
+		opp-431000000 {
+			opp-hz = /bits/ 64 <431000000>;
+			opp-microvolt = <631250>;
+		};
+		opp-473000000 {
+			opp-hz = /bits/ 64 <473000000>;
+			opp-microvolt = <637500>;
+		};
+		opp-515000000 {
+			opp-hz = /bits/ 64 <515000000>;
+			opp-microvolt = <637500>;
+		};
+		opp-556000000 {
+			opp-hz = /bits/ 64 <556000000>;
+			opp-microvolt = <643750>;
+		};
+		opp-598000000 {
+			opp-hz = /bits/ 64 <598000000>;
+			opp-microvolt = <650000>;
+		};
+		opp-640000000 {
+			opp-hz = /bits/ 64 <640000000>;
+			opp-microvolt = <650000>;
+		};
+		opp-670000000 {
+			opp-hz = /bits/ 64 <670000000>;
+			opp-microvolt = <662500>;
+		};
+		opp-700000000 {
+			opp-hz = /bits/ 64 <700000000>;
+			opp-microvolt = <675000>;
+		};
+		opp-730000000 {
+			opp-hz = /bits/ 64 <730000000>;
+			opp-microvolt = <687500>;
+		};
+		opp-760000000 {
+			opp-hz = /bits/ 64 <760000000>;
+			opp-microvolt = <700000>;
+		};
+		opp-790000000 {
+			opp-hz = /bits/ 64 <790000000>;
+			opp-microvolt = <712500>;
+		};
+		opp-820000000 {
+			opp-hz = /bits/ 64 <820000000>;
+			opp-microvolt = <725000>;
+		};
+		opp-850000000 {
+			opp-hz = /bits/ 64 <850000000>;
+			opp-microvolt = <737500>;
+		};
+		opp-880000000 {
+			opp-hz = /bits/ 64 <880000000>;
+			opp-microvolt = <750000>;
+		};
+	};
+
 	pmu-a55 {
 		compatible = "arm,cortex-a55-pmu";
 		interrupt-parent = <&gic>;
@@ -1790,6 +1860,26 @@ ufsphy: ufs-phy@11fa0000 {
 			status = "disabled";
 		};
 
+		gpu: gpu@13000000 {
+			compatible = "mediatek,mt8195-mali", "mediatek,mt8192-mali",
+				     "arm,mali-valhall-jm";
+			reg = <0 0x13000000 0 0x4000>;
+
+			clocks = <&mfgcfg CLK_MFG_BG3D>;
+			interrupts = <GIC_SPI 397 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 396 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 395 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "job", "mmu", "gpu";
+			operating-points-v2 = <&gpu_opp_table>;
+			power-domains = <&spm MT8195_POWER_DOMAIN_MFG2>,
+					<&spm MT8195_POWER_DOMAIN_MFG3>,
+					<&spm MT8195_POWER_DOMAIN_MFG4>,
+					<&spm MT8195_POWER_DOMAIN_MFG5>,
+					<&spm MT8195_POWER_DOMAIN_MFG6>;
+			power-domain-names = "core0", "core1", "core2", "core3", "core4";
+			status = "disabled";
+		};
+
 		mfgcfg: clock-controller@13fbf000 {
 			compatible = "mediatek,mt8195-mfgcfg";
 			reg = <0 0x13fbf000 0 0x1000>;