[PATCH v4 5/5] arm64: dts: ti: Add support for AM642 EVM
Dave Gerlach
d-gerlach at ti.com
Fri Feb 26 09:42:57 EST 2021
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.
Introduce support for the AM642 EVM to enable mmc boot, including
enabling UART and I2C on the board.
Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
Signed-off-by: Faiz Abbas <faiz_abbas at ti.com>
Signed-off-by: Suman Anna <s-anna at ti.com>
Signed-off-by: Nishanth Menon <nm at ti.com>
Signed-off-by: Dave Gerlach <d-gerlach at ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko at ti.com>
---
arch/arm64/boot/dts/ti/Makefile | 4 +-
arch/arm64/boot/dts/ti/k3-am642-evm.dts | 246 ++++++++++++++++++++++++
2 files changed, 249 insertions(+), 1 deletion(-)
create mode 100644 arch/arm64/boot/dts/ti/k3-am642-evm.dts
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 65506f21ba30..596fc1092c6d 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -3,7 +3,7 @@
# Make file to build device tree binaries for boards based on
# Texas Instruments Inc processors
#
-# Copyright (C) 2016-2020 Texas Instruments Incorporated - https://www.ti.com/
+# Copyright (C) 2016-2021 Texas Instruments Incorporated - https://www.ti.com/
#
dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb
@@ -11,3 +11,5 @@ dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb
dtb-$(CONFIG_ARCH_K3) += k3-j721e-common-proc-board.dtb
dtb-$(CONFIG_ARCH_K3) += k3-j7200-common-proc-board.dtb
+
+dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
new file mode 100644
index 000000000000..1f1787750fef
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/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 at 80000000 {
+ device_type = "memory";
+ /* 2G RAM */
+ reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
+
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ secure_ddr: optee at 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 at 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 at 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;
+};
--
2.28.0
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