[PATCH v4 8/8] arm64: tegra: Add simple framebuffer on Jetson Xavier NX

[Thierry Reding <thierry.reding@gmail.com>]

From: Thierry Reding <treding@nvidia.com>

Add the framebuffer carveout reserved memory node as well as a simple-
framebuffer node that is used to bind to the framebuffer that the
bootloader has set up.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v2:
- clear out dynamic fields and leave it up to firmware to fill them in
- mark simple-framebuffer node as disabled by default

 .../nvidia/tegra194-p3509-0000+p3668-0001.dts | 43 +++++++++++++++++++
 arch/arm64/boot/dts/nvidia/tegra194.dtsi      |  2 +-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p3509-0000+p3668-0001.dts b/arch/arm64/boot/dts/nvidia/tegra194-p3509-0000+p3668-0001.dts
index 238fd98e8e45..85b4aaa2ad4e 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194-p3509-0000+p3668-0001.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p3509-0000+p3668-0001.dts
@@ -7,4 +7,47 @@
 / {
 	model = "NVIDIA Jetson Xavier NX Developer Kit (eMMC)";
 	compatible = "nvidia,p3509-0000+p3668-0001", "nvidia,tegra194";
+
+	chosen {
+		framebuffer {
+			compatible = "simple-framebuffer";
+			status = "disabled";
+			memory-region = <&fb>;
+			power-domains = <&bpmp TEGRA194_POWER_DOMAIN_DISP>;
+			clocks = <&bpmp TEGRA194_CLK_SOR1_REF>,
+				 <&bpmp TEGRA194_CLK_SOR1_OUT>,
+				 <&bpmp TEGRA194_CLK_SOR1_PAD_CLKOUT>,
+				 <&bpmp TEGRA194_CLK_PLLD2>,
+				 <&bpmp TEGRA194_CLK_PLLDP>,
+				 <&bpmp TEGRA194_CLK_NVDISPLAY_DISP>,
+				 <&bpmp TEGRA194_CLK_NVDISPLAYHUB>,
+				 <&bpmp TEGRA194_CLK_NVDISPLAY_P0>;
+			width = <0>;
+			height = <0>;
+			stride = <0>;
+			format = "x8b8g8r8";
+		};
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		fb: framebuffer@0,0 {
+			compatible = "framebuffer";
+			reg = <0x0 0x0 0x0 0x0>;
+			iommu-addresses = <&dc0 0x0 0x0 0x0 0x0>;
+		};
+	};
+
+	bus@0 {
+		host1x@13e00000 {
+			display-hub@15200000 {
+				display@15200000 {
+					memory-region = <&fb>;
+				};
+			};
+		};
+	};
 };
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 5ce2650128b1..e0ce54eae17d 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -1975,7 +1975,7 @@ display-hub@15200000 {
 				#size-cells = <2>;
 				ranges = <0x0 0x15200000 0x0 0x15200000 0x0 0x40000>;
 
-				display@15200000 {
+				dc0: display@15200000 {
 					compatible = "nvidia,tegra194-dc";
 					reg = <0x0 0x15200000 0x0 0x10000>;
 					interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.39.0