arm64: dts: ti: add aquila am69

This adds the basic device tree skeleton for Toradex Aquila
AM69 module (upcoming) which can be used with Toradex Aquila
development board.

For now, this change adds Aquila AM69 UARTs and on module EMMC
support as a minimal feature set.

Upstream-Status: Pending

Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>

3 files changed, 175 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 2709426aea5f..028c924bfa2c 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -131,6 +131,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-microtips-mf101hie-panel.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-v3link-fusion.dtbo
 
 # Boards with J784s4 SoC
+dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dev.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk-csi2-ov5640.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk-ddr-mem-carveout.dtbo
diff --git a/arch/arm64/boot/dts/ti/k3-am69-aquila-dev.dts b/arch/arm64/boot/dts/ti/k3-am69-aquila-dev.dts
new file mode 100644
index 000000000000..789fc787ee35
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am69-aquila-dev.dts
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright 2024 Toradex
+ *
+ * Device tree for Toradex Aquila AM69 SoM on Aquila development carrier board
+ *
+ * https://www.toradex.com/computer-on-modules/aquila-arm-family/ti-am69
+ * https://www.toradex.com/products/carrier-board/aquila-development-board-kit
+ */
+
+/dts-v1/;
+
+#include "k3-j784s4.dtsi"
+#include "k3-am69-aquila.dtsi"
+
+/ {
+	model = "Toradex Aquila AM69 on Aquila Development Board";
+	compatible = "toradex,aquila-am69-dev",
+		     "toradex,aquila-am69",
+		     "ti,j784s4";
+};
+
+/* Aquila UART_1 */
+&main_uart1 {
+	status = "okay";
+};
+
+/* Aquila UART_3, used as the Linux console */
+&main_uart8 {
+	status = "okay";
+};
+
+/* Aquila UART_4 */
+&mcu_uart0 {
+	status = "okay";
+};
+
+/* Aquila UART_2, through RS485 transceiver */
+&wkup_uart0 {
+	linux,rs485-enabled-at-boot-time;
+	rs485-rx-during-tx;
+	status = "reserved"; /* TODO: set to 'okay' after bring-up */
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi b/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi
new file mode 100644
index 000000000000..aa50523a6a75
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright 2024 Toradex
+ *
+ * Common dtsi for Toradex Aquila AM69 SoM
+ *
+ * https://www.toradex.com/computer-on-modules/aquila-arm-family/ti-am69
+ */
+
+#include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-j784s4.dtsi"
+
+/ {
+	chosen {
+		stdout-path = "serial2:115200n8";
+	};
+
+	aliases {
+		mmc0 = &main_sdhci0;
+		serial0 = &wkup_uart0;
+		serial1 = &mcu_uart0;
+		serial2 = &main_uart8;
+		serial3 = &main_uart1;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		/* 32G RAM */
+		reg = <0x00 0x80000000 0x00 0x80000000>,
+		      <0x08 0x80000000 0x07 0x80000000>;
+	};
+
+	reserved_memory: reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/* global cma region */
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0x00 0x70000000>;
+			linux,cma-default;
+		};
+
+		secure_ddr: optee@9e800000 {
+			reg = <0x00 0x9e800000 0x00 0x01800000>;
+			no-map;
+		};
+	};
+};
+
+&main_pmx0 {
+	/* Aquila UART_1 */
+	pinctrl_main_uart1: main-uart1-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x05c, PIN_INPUT, 11)  /* (AC36) MCASP2_AXR0.UART1_CTSn */ /* AQUILA B37 */
+			J784S4_IOPAD(0x060, PIN_OUTPUT, 11) /* (AE36) MCASP2_AXR1.UART1_RTSn */ /* AQUILA B36 */
+			J784S4_IOPAD(0x054, PIN_INPUT, 11)  /* (AD37) MCASP2_ACLKX.UART1_RXD */ /* AQUILA B34 */
+			J784S4_IOPAD(0x058, PIN_OUTPUT, 11) /* (AE37) MCASP2_AFSX.UART1_TXD  */ /* AQUILA B35 */
+		>;
+	};
+
+	/* Aquila UART_3, used as the Linux console */
+	pinctrl_main_uart8: main-uart8-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x038, PIN_INPUT, 11)  /* (AK35) MCASP0_ACLKX.UART8_RXD */ /* AQUILA D22 */
+			J784S4_IOPAD(0x03c, PIN_OUTPUT, 11) /* (AK38) MCASP0_AFSX.UART8_TXD  */ /* AQUILA D23 */
+		>;
+	};
+};
+
+&wkup_pmx1 {
+	/* Aquila UART_4 */
+	pinctrl_mcu_uart0: mcu-uart0-default-pins {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x018, PIN_INPUT, 4)  /* (D31) MCU_OSPI1_D1.MCU_UART0_RXD */ /* AQUILA D24 */
+			J784S4_WKUP_IOPAD(0x01c, PIN_OUTPUT, 4) /* (G31) MCU_OSPI1_D2.MCU_UART0_TXD */ /* AQUILA D25 */
+		>;
+	};
+};
+
+&wkup_pmx2 {
+	/* Aquila UART_2 */
+	pinctrl_wkup_uart0: wkup-uart0-default-pins {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x070, PIN_INPUT, 0)  /* (L37) WKUP_GPIO0_6.WKUP_UART0_CTSn */ /* AQUILA L37 */
+			J784S4_WKUP_IOPAD(0x074, PIN_OUTPUT, 0) /* (L36) WKUP_GPIO0_7.WKUP_UART0_RTSn */ /* AQUILA L36 */
+			J784S4_WKUP_IOPAD(0x048, PIN_INPUT, 0)  /* (K35) WKUP_UART0_RXD               */ /* AQUILA K35 */
+			J784S4_WKUP_IOPAD(0x04c, PIN_OUTPUT, 0) /* (K34) WKUP_UART0_TXD               */ /* AQUILA K34 */
+		>;
+	};
+};
+
+/* On-module eMMC */
+&main_sdhci0 {
+	disable-wp;
+	no-mmc-hs400; /* TODO: verify the actual status, copied from TI SK AM69 */
+	non-removable;
+	ti,driver-strength-ohm = <50>;
+	status = "okay";
+};
+
+/* Aquila UART_1 */
+&main_uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_main_uart1>;
+	status = "disabled";
+};
+
+/* Aquila UART_3, used as the Linux console */
+&main_uart8 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_main_uart8>;
+	status = "disabled";
+};
+
+/* Aquila UART_4 */
+&mcu_uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_mcu_uart0>;
+	status = "disabled";
+};
+
+/* Aquila UART_2 */
+&wkup_uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_wkup_uart0>;
+	status = "disabled";
+};