arm64: dts: ti: Add support for AM62-SK

AM62 StarterKit (SK) board is a low cost, small form factor board
designed for TI’s AM625 SoC. It supports the following interfaces:
* 2 GB DDR4 RAM
* x2 Gigabit Ethernet interfaces capable of working in Switch and MAC mode
* x1 HDMI Port with audio + x1 OLDI/LVDS Display interface for Dual Display
* x1 Headphone Jack
* x1 USB2.0 Hub with two Type A host and x1 USB Type-C DRP Port
* x1 UHS-1 capable µSD card slot
* 2.4/5 GHz WLAN + Bluetooth 4.2 through WL1837
* 512 Mbit OSPI flash
* x4 UART through UART-USB bridge
* XDS110 for onboard JTAG debug using USB
* Temperature sensors, user push buttons and LEDs
* 40-pin User Expansion Connector
* 24-pin header for peripherals in MCU island (I2C, UART, SPI, IO)
* 20-pin header for Programmable Realtime Unit (PRU) IO pins
* 15-pin CSI header

Add basic support for AM62-SK.

Schematics: https://www.ti.com/lit/zip/sprr448

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20220225120239.1303821-6-vigneshr@ti.com

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 90be511..02e5d80 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -21,3 +21,5 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-common-proc-board.dtb
 
 dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb
+
+dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb

diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
new file mode 100644 (file)
index 0000000..0de4113
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
@@ -0,0 +1,206 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AM625 SK: https://www.ti.com/lit/zip/sprr448
+ *
+ * Copyright (C) 2021-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-am625.dtsi"
+
+/ {
+       compatible =  "ti,am625-sk", "ti,am625";
+       model = "Texas Instruments AM625 SK";
+
+       aliases {
+               serial2 = &main_uart0;
+       };
+
+       chosen {
+               stdout-path = "serial2:115200n8";
+               bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000";
+       };
+
+       memory@80000000 {
+               device_type = "memory";
+               /* 2G RAM */
+               reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
+
+       };
+
+       reserved-memory {
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+
+               secure_tfa_ddr: tfa@9e780000 {
+                       reg = <0x00 0x9e780000 0x00 0x80000>;
+                       alignment = <0x1000>;
+                       no-map;
+               };
+
+               secure_ddr: optee@9e800000 {
+                       reg = <0x00 0x9e800000 0x00 0x01800000>; /* for OP-TEE */
+                       alignment = <0x1000>;
+                       no-map;
+               };
+
+               wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9db00000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0x9db00000 0x00 0xc00000>;
+                       no-map;
+               };
+       };
+
+       vmain_pd: regulator-0 {
+               /* TPS65988 PD CONTROLLER OUTPUT */
+               compatible = "regulator-fixed";
+               regulator-name = "vmain_pd";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       vcc_5v0: regulator-1 {
+               /* Output of LM34936 */
+               compatible = "regulator-fixed";
+               regulator-name = "vcc_5v0";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               vin-supply = <&vmain_pd>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       vcc_3v3_sys: regulator-2 {
+               /* output of LM61460-Q1 */
+               compatible = "regulator-fixed";
+               regulator-name = "vcc_3v3_sys";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               vin-supply = <&vmain_pd>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+               pinctrl-names = "default";
+               pinctrl-0 = <&usr_led_pins_default>;
+
+               led-0 {
+                       label = "am62-sk:green:heartbeat";
+                       gpios = <&main_gpio1 49 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+                       function = LED_FUNCTION_HEARTBEAT;
+                       default-state = "off";
+               };
+       };
+};
+
+&main_pmx0 {
+       main_uart0_pins_default: main-uart0-pins-default {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x1c8, PIN_INPUT, 0) /* (D14) UART0_RXD */
+                       AM62X_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14) UART0_TXD */
+               >;
+       };
+
+       main_i2c0_pins_default: main-i2c0-pins-default {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x1e0, PIN_INPUT_PULLUP, 0) /* (B16) I2C0_SCL */
+                       AM62X_IOPAD(0x1e4, PIN_INPUT_PULLUP, 0) /* (A16) I2C0_SDA */
+               >;
+       };
+
+       main_i2c1_pins_default: main-i2c1-pins-default {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x1e8, PIN_INPUT_PULLUP, 0) /* (B17) I2C1_SCL */
+                       AM62X_IOPAD(0x1ec, PIN_INPUT_PULLUP, 0) /* (A17) I2C1_SDA */
+               >;
+       };
+
+       usr_led_pins_default: usr-led-pins-default {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x244, PIN_OUTPUT, 7) /* (C17) MMC1_SDWP.GPIO1_49 */
+               >;
+       };
+};
+
+&wkup_uart0 {
+       /* WKUP UART0 is used by DM firmware */
+       status = "reserved";
+};
+
+&mcu_uart0 {
+       status = "disabled";
+};
+
+&main_uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_uart0_pins_default>;
+};
+
+&main_uart1 {
+       /* Main UART1 is used by TIFS firmware */
+       status = "reserved";
+};
+
+&main_uart2 {
+       status = "disabled";
+};
+
+&main_uart3 {
+       status = "disabled";
+};
+
+&main_uart4 {
+       status = "disabled";
+};
+
+&main_uart5 {
+       status = "disabled";
+};
+
+&main_uart6 {
+       status = "disabled";
+};
+
+&mcu_i2c0 {
+       status = "disabled";
+};
+
+&wkup_i2c0 {
+       status = "disabled";
+};
+
+&main_i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_i2c0_pins_default>;
+       clock-frequency = <400000>;
+};
+
+&main_i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_i2c1_pins_default>;
+       clock-frequency = <400000>;
+};
+
+&main_i2c2 {
+       status = "disabled";
+};
+
+&main_i2c3 {
+       status = "disabled";
+};
+
+&mailbox0_cluster0 {
+       mbox_m4_0: mbox-m4-0 {
+               ti,mbox-rx = <0 0 0>;
+               ti,mbox-tx = <1 0 0>;
+       };
+};