arm64: tegra: Initial Tegra234 VDK support

The NVIDIA Tegra234 VDK is a simulation platform for the Orin SoC. It
supports a subset of the peripherals that will be available in the final
chip and serves as a bootstrapping platform.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/Makefile

@@ -9,3 +9,4 @@ dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2894-0050-a08.dtb
 dtb-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186-p2771-0000.dtb
 dtb-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra194-p2972-0000.dtb
 dtb-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra194-p3509-0000+p3668-0000.dtb
+dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-sim-vdk.dtb

arch/arm64/boot/dts/nvidia/tegra234-sim-vdk.dts

+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra234.dtsi"
+
+/ {
+	model = "NVIDIA Tegra234 VDK";
+	compatible = "nvidia,tegra234-vdk", "nvidia,tegra234";
+
+	aliases {
+		sdhci3 = "/cbb@0/sdhci@3460000";
+		serial0 = &uarta;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8 earlycon=uart8250,mmio32,0x03100000";
+		stdout-path = "serial0:115200n8";
+	};
+
+	cbb@0 {
+		serial@3100000 {
+			status = "okay";
+		};
+
+		sdhci@3460000 {
+			status = "okay";
+			bus-width = <8>;
+			non-removable;
+			only-1-8-v;
+		};
+
+		rtc@c2a0000 {
+			status = "okay";
+		};
+
+		pmc@c360000 {
+			nvidia,invert-interrupt;
+		};
+	};
+};

arch/arm64/boot/dts/nvidia/tegra234.dtsi

+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/clock/tegra234-clock.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/mailbox/tegra186-hsp.h>
+#include <dt-bindings/reset/tegra234-reset.h>
+
+/ {
+	compatible = "nvidia,tegra234";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	bus@0 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		ranges = <0x0 0x0 0x0 0x40000000>;
+
+		misc@100000 {
+			compatible = "nvidia,tegra234-misc";
+			reg = <0x00100000 0xf000>,
+			      <0x0010f000 0x1000>;
+			status = "okay";
+		};
+
+		uarta: serial@3100000 {
+			compatible = "nvidia,tegra234-uart", "nvidia,tegra20-uart";
+			reg = <0x03100000 0x10000>;
+			interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&bpmp TEGRA234_CLK_UARTA>;
+			clock-names = "serial";
+			resets = <&bpmp TEGRA234_RESET_UARTA>;
+			reset-names = "serial";
+			status = "disabled";
+		};
+
+		mmc@3460000 {
+			compatible = "nvidia,tegra234-sdhci", "nvidia,tegra186-sdhci";
+			reg = <0x03460000 0x20000>;
+			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&bpmp TEGRA234_CLK_SDMMC4>;
+			clock-names = "sdhci";
+			resets = <&bpmp TEGRA234_RESET_SDMMC4>;
+			reset-names = "sdhci";
+			dma-coherent;
+			status = "disabled";
+		};
+
+		fuse@3810000 {
+			compatible = "nvidia,tegra234-efuse";
+			reg = <0x03810000 0x10000>;
+			clocks = <&bpmp TEGRA234_CLK_FUSE>;
+			clock-names = "fuse";
+		};
+
+		hsp_top0: hsp@3c00000 {
+			compatible = "nvidia,tegra234-hsp", "nvidia,tegra194-hsp";
+			reg = <0x03c00000 0xa0000>;
+			interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "doorbell", "shared0", "shared1", "shared2",
+					  "shared3", "shared4", "shared5", "shared6",
+					  "shared7";
+			#mbox-cells = <2>;
+		};
+
+		hsp_aon: hsp@c150000 {
+			compatible = "nvidia,tegra234-hsp", "nvidia,tegra194-hsp";
+			reg = <0x0c150000 0x90000>;
+			interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
+			/*
+			 * Shared interrupt 0 is routed only to AON/SPE, so
+			 * we only have 4 shared interrupts for the CCPLEX.
+			 */
+			interrupt-names = "shared1", "shared2", "shared3", "shared4";
+			#mbox-cells = <2>;
+		};
+
+		rtc@c2a0000 {
+			compatible = "nvidia,tegra234-rtc", "nvidia,tegra20-rtc";
+			reg = <0x0c2a0000 0x10000>;
+			interrupt-parent = <&pmc>;
+			interrupts = <73 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
+		pmc: pmc@c360000 {
+			compatible = "nvidia,tegra234-pmc";
+			reg = <0x0c360000 0x10000>,
+			      <0x0c370000 0x10000>,
+			      <0x0c380000 0x10000>,
+			      <0x0c390000 0x10000>,
+			      <0x0c3a0000 0x10000>;
+			reg-names = "pmc", "wake", "aotag", "scratch", "misc";
+
+			#interrupt-cells = <2>;
+			interrupt-controller;
+		};
+
+		gic: interrupt-controller@f400000 {
+			compatible = "arm,gic-v3";
+			reg = <0x0f400000 0x010000>, /* GICD */
+			      <0x0f440000 0x200000>; /* GICR */
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+
+			#redistributor-regions = <1>;
+			#interrupt-cells = <3>;
+			interrupt-controller;
+		};
+	};
+
+	sysram@40000000 {
+		compatible = "nvidia,tegra234-sysram", "mmio-sram";
+		reg = <0x0 0x40000000 0x0 0x50000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0x40000000 0x50000>;
+
+		cpu_bpmp_tx: shmem@4e000 {
+			reg = <0x4e000 0x1000>;
+			label = "cpu-bpmp-tx";
+			pool;
+		};
+
+		cpu_bpmp_rx: shmem@4f000 {
+			reg = <0x4f000 0x1000>;
+			label = "cpu-bpmp-rx";
+			pool;
+		};
+	};
+
+	bpmp: bpmp {
+		compatible = "nvidia,tegra234-bpmp", "nvidia,tegra186-bpmp";
+		mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_DB
+				    TEGRA_HSP_DB_MASTER_BPMP>;
+		shmem = <&cpu_bpmp_tx &cpu_bpmp_rx>;
+		#clock-cells = <1>;
+		#reset-cells = <1>;
+		#power-domain-cells = <1>;
+
+		bpmp_i2c: i2c {
+			compatible = "nvidia,tegra186-bpmp-i2c";
+			nvidia,bpmp-bus-id = <5>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			reg = <0x000>;
+
+			enable-method = "psci";
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		status = "okay";
+		method = "smc";
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupt-parent = <&gic>;
+		always-on;
+	};
+};

drivers/soc/tegra/Kconfig

@@ -119,6 +119,16 @@ config ARCH_TEGRA_194_SOC
 	help
 	  Enable support for the NVIDIA Tegra194 SoC.
 
+config ARCH_TEGRA_234_SOC
+	bool "NVIDIA Tegra234 SoC"
+	select MAILBOX
+	select TEGRA_BPMP
+	select TEGRA_HSP_MBOX
+	select TEGRA_IVC
+	select SOC_TEGRA_PMC
+	help
+	  Enable support for the NVIDIA Tegra234 SoC.
+
 endif
 endif
 

include/dt-bindings/clock/tegra234-clock.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved. */
+
+#ifndef DT_BINDINGS_CLOCK_TEGRA234_CLOCK_H
+#define DT_BINDINGS_CLOCK_TEGRA234_CLOCK_H
+
+/** @brief output of gate CLK_ENB_FUSE */
+#define TEGRA234_CLK_FUSE			40
+/** @brief output of mux controlled by CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC4 */
+#define TEGRA234_CLK_SDMMC4			123
+/** @brief output of mux controlled by CLK_RST_CONTROLLER_CLK_SOURCE_UARTA */
+#define TEGRA234_CLK_UARTA			155
+
+#endif

include/dt-bindings/reset/tegra234-reset.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018-2020, NVIDIA CORPORATION. All rights reserved. */
+
+#ifndef DT_BINDINGS_RESET_TEGRA234_RESET_H
+#define DT_BINDINGS_RESET_TEGRA234_RESET_H
+
+#define TEGRA234_RESET_SDMMC4			85
+#define TEGRA234_RESET_UARTA			100
+
+#endif