arm: dts: k3-am642: Add initial support for EVM

The AM642 EValuation Module (EVM) is a board that provides access to
various peripherals available on the AM642 SoC, such as PCIe, USB 2.0,
CPSW Ethernet, ADC, and more.

Add basic support.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index a5cae010c263213e140ac11ddcbde93db09e9b57..7657ccb0ec406555581d7692478de8bf79684c35 100644 (file)
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1056,6 +1056,7 @@ dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb \
                              k3-j721e-r5-common-proc-board.dtb \
                              k3-j7200-common-proc-board.dtb \
                              k3-j7200-r5-common-proc-board.dtb
+dtb-$(CONFIG_SOC_K3_AM642) += k3-am642-evm.dtb
 
 dtb-$(CONFIG_ARCH_MEDIATEK) += \
        mt7622-rfb.dtb \

diff --git a/arch/arm/dts/k3-am642-evm.dts b/arch/arm/dts/k3-am642-evm.dts
new file mode 100644 (file)
index 0000000..1f17877
--- /dev/null
+++ b/arch/arm/dts/k3-am642-evm.dts
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include "k3-am642.dtsi"
+
+/ {
+       compatible =  "ti,am642-evm", "ti,am642";
+       model = "Texas Instruments AM642 EVM";
+
+       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_ddr: optee@9e800000 {
+                       reg = <0x00 0x9e800000 0x00 0x01800000>; /* for OP-TEE */
+                       alignment = <0x1000>;
+                       no-map;
+               };
+       };
+
+       evm_12v0: fixedregulator-evm12v0 {
+               /* main DC jack */
+               compatible = "regulator-fixed";
+               regulator-name = "evm_12v0";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       vsys_5v0: fixedregulator-vsys5v0 {
+               /* output of LM5140 */
+               compatible = "regulator-fixed";
+               regulator-name = "vsys_5v0";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               vin-supply = <&evm_12v0>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       vsys_3v3: fixedregulator-vsys3v3 {
+               /* output of LM5140 */
+               compatible = "regulator-fixed";
+               regulator-name = "vsys_3v3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               vin-supply = <&evm_12v0>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       vdd_mmc1: fixed-regulator-sd {
+               /* TPS2051BD */
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_mmc1";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-boot-on;
+               enable-active-high;
+               vin-supply = <&vsys_3v3>;
+               gpio = <&exp1 6 GPIO_ACTIVE_HIGH>;
+       };
+
+       vddb: fixedregulator-vddb {
+               compatible = "regulator-fixed";
+               regulator-name = "vddb_3v3_display";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               vin-supply = <&vsys_3v3>;
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               led-0 {
+                       label = "am64-evm:red:heartbeat";
+                       gpios = <&exp1 16 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+                       function = LED_FUNCTION_HEARTBEAT;
+                       default-state = "off";
+               };
+       };
+};
+
+&main_pmx0 {
+       main_mmc1_pins_default: main-mmc1-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x0294, PIN_INPUT_PULLUP, 0) /* (J19) MMC1_CMD */
+                       AM64X_IOPAD(0x028c, PIN_INPUT_PULLDOWN, 0) /* (L20) MMC1_CLK */
+                       AM64X_IOPAD(0x0288, PIN_INPUT_PULLUP, 0) /* (K21) MMC1_DAT0 */
+                       AM64X_IOPAD(0x0284, PIN_INPUT_PULLUP, 0) /* (L21) MMC1_DAT1 */
+                       AM64X_IOPAD(0x0280, PIN_INPUT_PULLUP, 0) /* (K19) MMC1_DAT2 */
+                       AM64X_IOPAD(0x027c, PIN_INPUT_PULLUP, 0) /* (K18) MMC1_DAT3 */
+                       AM64X_IOPAD(0x0298, PIN_INPUT_PULLUP, 0) /* (D19) MMC1_SDCD */
+                       AM64X_IOPAD(0x029c, PIN_INPUT, 0) /* (C20) MMC1_SDWP */
+                       AM64X_IOPAD(0x0290, PIN_INPUT, 0) /* MMC1_CLKLB */
+               >;
+       };
+
+       main_uart0_pins_default: main-uart0-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x0238, PIN_INPUT, 0) /* (B16) UART0_CTSn */
+                       AM64X_IOPAD(0x023c, PIN_OUTPUT, 0) /* (A16) UART0_RTSn */
+                       AM64X_IOPAD(0x0230, PIN_INPUT, 0) /* (D15) UART0_RXD */
+                       AM64X_IOPAD(0x0234, PIN_OUTPUT, 0) /* (C16) UART0_TXD */
+               >;
+       };
+
+       main_i2c1_pins_default: main-i2c1-pins-default {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */
+                       AM64X_IOPAD(0x026c, PIN_INPUT_PULLUP, 0) /* (B19) I2C1_SDA */
+               >;
+       };
+};
+
+&main_uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_uart0_pins_default>;
+};
+
+/* main_uart1 is reserved for firmware usage */
+&main_uart1 {
+       status = "reserved";
+};
+
+&main_uart2 {
+       status = "disabled";
+};
+
+&main_uart3 {
+       status = "disabled";
+};
+
+&main_uart4 {
+       status = "disabled";
+};
+
+&main_uart5 {
+       status = "disabled";
+};
+
+&main_uart6 {
+       status = "disabled";
+};
+
+&mcu_uart0 {
+       status = "disabled";
+};
+
+&mcu_uart1 {
+       status = "disabled";
+};
+
+&main_i2c1 {
+       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_eMMC_RSTn", "CAN_MUX_SEL",
+                                 "GPIO_CPSW1_RST", "GPIO_RGMII1_RST",
+                                 "GPIO_RGMII2_RST", "GPIO_PCIe_RST_OUT",
+                                 "MMC1_SD_EN", "FSI_FET_SEL",
+                                 "MCAN0_STB_3V3", "MCAN1_STB_3V3",
+                                 "CPSW_FET_SEL", "CPSW_FET2_SEL",
+                                 "PRG1_RGMII2_FET_SEL", "TEST_GPIO2",
+                                 "GPIO_OLED_RESETn", "VPP_LDO_EN",
+                                 "TEST_LED1", "TP92", "TP90", "TP88",
+                                 "TP87", "TP86", "TP89", "TP91";
+       };
+
+       /* osd9616p0899-10 */
+       display@3c {
+               compatible = "solomon,ssd1306fb-i2c";
+               reg = <0x3c>;
+               reset-gpios = <&exp1 14 GPIO_ACTIVE_LOW>;
+               vbat-supply = <&vddb>;
+               solomon,height = <16>;
+               solomon,width = <96>;
+               solomon,com-seq;
+               solomon,com-invdir;
+               solomon,page-offset = <0>;
+               solomon,prechargep1 = <2>;
+               solomon,prechargep2 = <13>;
+       };
+};
+
+&mcu_i2c0 {
+       status = "disabled";
+};
+
+&mcu_i2c1 {
+       status = "disabled";
+};
+
+&mcu_spi0 {
+       status = "disabled";
+};
+
+&mcu_spi1 {
+       status = "disabled";
+};
+
+&sdhci0 {
+       /* emmc */
+       bus-width = <8>;
+       non-removable;
+       ti,driver-strength-ohm = <50>;
+       disable-wp;
+};
+
+&sdhci1 {
+       /* SD/MMC */
+       vmmc-supply = <&vdd_mmc1>;
+       pinctrl-names = "default";
+       bus-width = <4>;
+       pinctrl-0 = <&main_mmc1_pins_default>;
+       ti,driver-strength-ohm = <50>;
+       disable-wp;
+};