arm64: tegra: Add p3971-0089+p3834-0008 support

The P3971-0089+P3834-0008 is an engineering reference platform for the
Tegra264 SoC.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Thierry Reding <[email protected]>

Author: thierryreding

arch/arm64/boot/dts/nvidia/Makefile

@@ -12,6 +12,7 @@ DTC_FLAGS_tegra234-p3737-0000+p3701-0000 := -@
 DTC_FLAGS_tegra234-p3740-0002+p3701-0008 := -@
 DTC_FLAGS_tegra234-p3768-0000+p3767-0000 := -@
 DTC_FLAGS_tegra234-p3768-0000+p3767-0005 := -@
+DTC_FLAGS_tegra264-p3971-0089+p3834-0008 := -@
 
 dtb-$(CONFIG_ARCH_TEGRA_132_SOC) += tegra132-norrin.dtb
 dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2371-0000.dtb
@@ -31,3 +32,4 @@ dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-p3737-0000+p3701-0008.dtb
 dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-p3740-0002+p3701-0008.dtb
 dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-p3768-0000+p3767-0000.dtb
 dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-p3768-0000+p3767-0005.dtb
+dtb-$(CONFIG_ARCH_TEGRA_264_SOC) += tegra264-p3971-0089+p3834-0008.dtb

arch/arm64/boot/dts/nvidia/tegra264-p3834-0008.dtsi

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+
+#include "tegra264-p3834.dtsi"
+
+/ {
+	compatible = "nvidia,p3834-0008", "nvidia,tegra264";
+};

arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+
+#include "tegra264.dtsi"
+
+/ {
+	compatible = "nvidia,p3834", "nvidia,tegra264";
+
+	aliases {
+	};
+
+	bus@0 {
+		serial@c4e0000 {
+			status = "okay";
+		};
+
+		serial@c5a0000 {
+			status = "okay";
+		};
+	};
+
+	bus@8100000000 {
+		iommu@5000000 {
+			status = "okay";
+		};
+
+		iommu@6000000 {
+			status = "okay";
+		};
+	};
+};

arch/arm64/boot/dts/nvidia/tegra264-p3971-0089+p3834-0008.dts

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+/dts-v1/;
+
+// module files must be included first
+#include "tegra264-p3834-0008.dtsi"
+#include "tegra264-p3971-0089+p3834.dtsi"
+
+/ {
+	model = "NVIDIA P3971-0089+P3834-0008 Engineering Reference Platform";
+	compatible = "nvidia,p3971-0089+p3834-0008", "nvidia,p3834-0008", "nvidia,tegra264";
+};

arch/arm64/boot/dts/nvidia/tegra264-p3971-0089+p3834.dtsi

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+
+#include "tegra264-p3971-0089.dtsi"
+
+/ {
+	aliases {
+		serial0 = &{/bus@0/serial@c4e0000};
+		serial1 = &{/bus@0/serial@c5a0000};
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};

arch/arm64/boot/dts/nvidia/tegra264-p3971-0089.dtsi

@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+
+#include "tegra264-p3971.dtsi"

arch/arm64/boot/dts/nvidia/tegra264-p3971.dtsi

@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+
+/ {
+};