[PATCH v8 2/4] arm64: dts: mt8183: Add node for the Mali GPU

[Nicolas Boichat]

Add a basic GPU node for mt8183.

Signed-off-by: Nicolas Boichat <drinkcat at chromium.org>
---
The binding we use with out-of-tree Mali drivers includes more
clocks, this is used for devfreq: the out-of-tree driver switches
clk_mux to clk_sub_parent (26Mhz), adjusts clk_main_parent, then
switches clk_mux back to clk_main_parent:
(see https://chromium.googlesource.com/chromiumos/third_party/kernel/+/chromeos-4.19/drivers/gpu/arm/midgard/platform/mediatek/mali_kbase_runtime_pm.c#423)
clocks =
        <&topckgen CLK_TOP_MFGPLL_CK>,
        <&topckgen CLK_TOP_MUX_MFG>,
        <&clk26m>,
        <&mfgcfg CLK_MFG_BG3D>;
clock-names =
        "clk_main_parent",
        "clk_mux",
        "clk_sub_parent",
        "subsys_mfg_cg";
(based on discussions, this probably belongs in the clock core)

This only matters for devfreq, that is disabled anyway as we don't
have platform-specific code to handle >1 supplies.

(no changes since v6)

Changes in v6:
 - Add gpu regulators to kukui dtsi as well.
 - Power domains are now attached to spm, not scpsys
 - Drop R-B.

Changes in v5:
 - Rename "2d" power domain to "core2" (keep R-B again).

Changes in v4:
 - Add power-domain-names to describe the 3 domains.
   (kept Alyssa's reviewed-by as the change is minor)

Changes in v3:
 - No changes

Changes in v2:
 - Use sram instead of mali_sram as SRAM supply name.
 - Rename mali@ to gpu at .

 arch/arm64/boot/dts/mediatek/mt8183-evb.dts   |   6 +
 .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi |   6 +
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      | 105 ++++++++++++++++++
 3 files changed, 117 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
index cba2d8933e79..0a8c2fad8e16 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
@@ -42,6 +42,12 @@ &auxadc {
 	status = "okay";
 };
 
+&gpu {
+	supply-names = "mali", "sram";
+	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 bf2ad1294dd3..00d8e112cab9 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -249,6 +249,12 @@ &cpu7 {
 	proc-supply = <&mt6358_vproc11_reg>;
 };
 
+&gpu {
+	supply-names = "mali", "sram";
+	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.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 5b782a4769e7..5430e05e18a0 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -964,6 +964,111 @@ mfgcfg: syscon at 13000000 {
 			#clock-cells = <1>;
 		};
 
+		gpu: gpu at 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>;
+		};
+
+		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>;
+			};
+		};
+
 		mmsys: syscon at 14000000 {
 			compatible = "mediatek,mt8183-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;
-- 
2.29.2.729.g45daf8777d-goog