arm64: dts: ti: Add support for AM62A7-SK

AM62A StarterKit (SK) board is a low cost, small form factor board
designed for TI’s AM62A7 SoC. It supports the following interfaces:
* 2 GB LPDDR4 RAM
* x1 Gigabit Ethernet interface
* x1 HDMI Port with audio
* 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
* M.2 SDIO Wifi + UART slot
* 1Gb OSPI NAND 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
* 40-pin CSI header

Add basic support for AM62A7-SK.

Schematics: https://www.ti.com/lit/zip/sprr459

Co-developed-by: Bryan Brattlof <bb@ti.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Tested-by: Devarsh Thakkar <devarsht@ti.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220901141328.899100-6-vigneshr@ti.com

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 02e5d80344d00cf8bdb4ad9bc29c0fad2925b324..4555a5be2257788a1c2f1d61078ea3b54b72e0f2 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -23,3 +23,5 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb
 
 dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
+
+dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb

diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
new file mode 100644 (file)
index 0000000..576dbce
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -0,0 +1,223 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AM62A SK: https://www.ti.com/lit/zip/sprr459
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-am62a7.dtsi"
+
+/ {
+       compatible =  "ti,am62a7-sk", "ti,am62a7";
+       model = "Texas Instruments AM62A7 SK";
+
+       aliases {
+               serial2 = &main_uart0;
+               mmc1 = &sdhci1;
+       };
+
+       chosen {
+               stdout-path = "serial2:115200n8";
+       };
+
+       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_memory_region: r5f-dma-memory@9c900000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0x9c900000 0x00 0x01e00000>;
+                       no-map;
+               };
+       };
+
+       vmain_pd: regulator-0 {
+               /* TPS25750 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 TPS63070 */
+               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 LM5141-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;
+       };
+
+       vdd_mmc1: regulator-3 {
+               /* TPS22918DBVR */
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_mmc1";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-boot-on;
+               enable-active-high;
+               gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+               pinctrl-names = "default";
+               pinctrl-0 = <&usr_led_pins_default>;
+
+               led-0 {
+                       label = "am62a-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 = <
+                       AM62AX_IOPAD(0x1c8, PIN_INPUT, 0) /* (D14) UART0_RXD */
+                       AM62AX_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14) UART0_TXD */
+               >;
+       };
+
+       main_i2c0_pins_default: main-i2c0-pins-default {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x1e0, PIN_INPUT_PULLUP, 0) /* (B16) I2C0_SCL */
+                       AM62AX_IOPAD(0x1e4, PIN_INPUT_PULLUP, 0) /* (A16) I2C0_SDA */
+               >;
+       };
+
+       main_i2c1_pins_default: main-i2c1-pins-default {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x1e8, PIN_INPUT_PULLUP, 0) /* (B17) I2C1_SCL */
+                       AM62AX_IOPAD(0x1ec, PIN_INPUT_PULLUP, 0) /* (A17) I2C1_SDA */
+               >;
+       };
+
+       main_i2c2_pins_default: main-i2c2-pins-default {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x0b0, PIN_INPUT_PULLUP, 1) /* (K22) GPMC0_CSn2.I2C2_SCL */
+                       AM62AX_IOPAD(0x0b4, PIN_INPUT_PULLUP, 1) /* (K24) GPMC0_CSn3.I2C2_SDA */
+               >;
+       };
+
+       main_mmc1_pins_default: main-mmc1-pins-default {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x23c, PIN_INPUT, 0) /* (A21) MMC1_CMD */
+                       AM62AX_IOPAD(0x234, PIN_INPUT, 0) /* (B22) MMC1_CLK */
+                       AM62AX_IOPAD(0x230, PIN_INPUT, 0) /* (A22) MMC1_DAT0 */
+                       AM62AX_IOPAD(0x22c, PIN_INPUT, 0) /* (B21) MMC1_DAT1 */
+                       AM62AX_IOPAD(0x228, PIN_INPUT, 0) /* (C21) MMC1_DAT2 */
+                       AM62AX_IOPAD(0x224, PIN_INPUT, 0) /* (D22) MMC1_DAT3 */
+                       AM62AX_IOPAD(0x240, PIN_INPUT, 0) /* (D17) MMC1_SDCD */
+               >;
+       };
+
+       usr_led_pins_default: usr-led-pins-default {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x244, PIN_OUTPUT, 7) /* (D18) MMC1_SDWP.GPIO1_49 */
+               >;
+       };
+};
+
+&main_i2c0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_i2c0_pins_default>;
+       clock-frequency = <400000>;
+};
+
+&main_i2c1 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_i2c1_pins_default>;
+       clock-frequency = <400000>;
+
+       exp1: gpio@22 {
+               compatible = "ti,tca6424";
+               reg = <0x22>;
+               gpio-controller;
+               #gpio-cells = <2>;
+
+               gpio-line-names = "GPIO_CPSW2_RST", "GPIO_CPSW1_RST",
+                                  "BT_EN_SOC", "MMC1_SD_EN",
+                                  "VPP_EN", "EXP_PS_3V3_En",
+                                  "EXP_PS_5V0_En", "EXP_HAT_DETECT",
+                                  "GPIO_AUD_RSTn", "GPIO_eMMC_RSTn",
+                                  "UART1_FET_BUF_EN", "BT_UART_WAKE_SOC",
+                                  "GPIO_HDMI_RSTn", "CSI_GPIO0",
+                                  "CSI_GPIO1", "WLAN_ALERTn",
+                                  "HDMI_INTn", "TEST_GPIO2",
+                                  "MCASP1_FET_EN", "MCASP1_BUF_BT_EN",
+                                  "MCASP1_FET_SEL", "UART1_FET_SEL",
+                                  "PD_I2C_IRQ", "IO_EXP_TEST_LED";
+       };
+};
+
+&sdhci1 {
+       /* SD/MMC */
+       status = "okay";
+       vmmc-supply = <&vdd_mmc1>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_mmc1_pins_default>;
+       ti,driver-strength-ohm = <50>;
+       disable-wp;
+};
+
+&main_gpio0 {
+       status = "okay";
+};
+
+&main_gpio1 {
+       status = "okay";
+};
+
+&main_gpio_intr {
+       status = "okay";
+};
+
+&main_uart0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_uart0_pins_default>;
+};