arm64: dts: ti: Add support for the AM62P5 Starter Kit

Add basic support for the AM62P5 SK with UART console and
ramdisk as rootfs.

Schematics is at https://www.ti.com/lit/zip/sprr487

Signed-off-by: Bryan Brattlof <[email protected]>
Acked-by: Andrew Davis <[email protected]>
Reviewed-by: Dhruva Gole <[email protected]>
Signed-off-by: Vignesh Raghavendra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nishanth Menon <[email protected]>

Author: bryanbrattlof

arch/arm64/boot/dts/ti/Makefile

@@ -24,6 +24,9 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-hdmi-audio.dtbo
 # Boards with AM62Ax SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
 
+# Boards with AM62Px SoC
+dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb
+
 # Boards with AM64x SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb

arch/arm64/boot/dts/ti/k3-am62p5-sk.dts

@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree file for the AM62P5-SK
+ * Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ * Schematics: https://www.ti.com/lit/zip/sprr487
+ */
+
+/dts-v1/;
+
+#include "k3-am62p5.dtsi"
+
+/ {
+	compatible = "ti,am62p5-sk", "ti,am62p5";
+	model = "Texas Instruments AM62P5 SK";
+
+	aliases {
+		serial0 = &wkup_uart0;
+		serial2 = &main_uart0;
+		serial3 = &main_uart1;
+	};
+
+	chosen {
+		stdout-path = &main_uart0;
+	};
+
+	memory@80000000 {
+		/* 8G RAM */
+		reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
+		      <0x00000008 0x80000000 0x00000001 0x80000000>;
+		device_type = "memory";
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		secure_tfa_ddr: tfa@9e780000 {
+			reg = <0x00 0x9e780000 0x00 0x80000>;
+			no-map;
+		};
+
+		secure_ddr: optee@9e800000 {
+			reg = <0x00 0x9e800000 0x00 0x01800000>; /* for OP-TEE */
+			no-map;
+		};
+
+		wkup_r5fss0_core0_memory_region: r5f-dma-memory@9c900000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9c900000 0x00 0x01e00000>;
+			no-map;
+		};
+	};
+};
+
+&main_pmx0 {
+	main_uart0_pins_default: main-uart0-default-pins {
+		bootph-all;
+		pinctrl-single,pins = <
+			AM62PX_IOPAD(0x1c8, PIN_INPUT, 0)	/* (A22) UART0_RXD */
+			AM62PX_IOPAD(0x1cc, PIN_OUTPUT, 0)	/* (B22) UART0_TXD */
+			AM62PX_IOPAD(0x1d0, PIN_INPUT, 0)	/* (A23) UART0_CTSn */
+			AM62PX_IOPAD(0x1d4, PIN_OUTPUT, 0)	/* (C22) UART0_RTSn */
+		>;
+	};
+
+	main_uart1_pins_default: main-uart1-default-pins {
+		bootph-all;
+		pinctrl-single,pins = <
+			AM62PX_IOPAD(0x194, PIN_INPUT, 2)	/* (D25) MCASP0_AXR3 */
+			AM62PX_IOPAD(0x198, PIN_OUTPUT, 2)	/* (E25) MCASP0_AXR2 */
+			AM62PX_IOPAD(0x1ac, PIN_INPUT, 2)	/* (G23) MCASP0_AFSR */
+			AM62PX_IOPAD(0x1b0, PIN_OUTPUT, 2)	/* (G20) MCASP0_ACLKR */
+		>;
+	};
+};
+
+&main_uart0 {
+	bootph-all;
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart0_pins_default>;
+	status = "okay";
+};
+
+&main_uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart1_pins_default>;
+	/* Main UART1 is used by TIFS firmware */
+	status = "reserved";
+};
+
+&cbass_mcu {
+	bootph-all;
+};
+
+&mcu_pmx0 {
+	bootph-all;
+	wkup_uart0_pins_default: wkup-uart0-default-pins {
+		bootph-all;
+		pinctrl-single,pins = <
+			AM62PX_MCU_IOPAD(0x02c, PIN_INPUT, 0)	/* (C7) WKUP_UART0_CTSn */
+			AM62PX_MCU_IOPAD(0x030, PIN_OUTPUT, 0)	/* (C6) WKUP_UART0_RTSn */
+			AM62PX_MCU_IOPAD(0x024, PIN_INPUT, 0)	/* (D8) WKUP_UART0_RXD */
+			AM62PX_MCU_IOPAD(0x028, PIN_OUTPUT, 0)	/* (D7) WKUP_UART0_TXD */
+		>;
+	};
+};
+
+&wkup_uart0 {
+	/* WKUP UART0 is used by DM firmware */
+	bootph-all;
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_uart0_pins_default>;
+	status = "reserved";
+};