[PATCH v2 5/5] arm64: dts: ti: Add support for AM642 EVM
Dave Gerlach
d-gerlach at ti.com
Tue Jan 19 11:39:27 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, I2C, and SPI 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>
---
v1 -> v2:
* Add regulators on board needed to enable sdhci for mmc card
* Add pin settings for new nodes
* Add i2c1 and gpio exapnder needed for mmc
* Add support for OSD9616P0899-10 96x16 passive matrix display.
* Add support for onboard spi eeprom
* Mark mcu uart, i2c, and spi nodes as disabled
* Add sdhci nodes which enables mmc rootfs.
arch/arm64/boot/dts/ti/Makefile | 2 +
arch/arm64/boot/dts/ti/k3-am642-evm.dts | 258 ++++++++++++++++++++++++
2 files changed, 260 insertions(+)
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..c687739e2bca 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -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..50b1ae1314a1
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -0,0 +1,258 @@
+// 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_spi0_pins_default: main-spi0-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0210, PIN_INPUT, 0) /* (D13) SPI0_CLK */
+ AM64X_IOPAD(0x0208, PIN_OUTPUT, 0) /* (D12) SPI0_CS0 */
+ AM64X_IOPAD(0x0214, PIN_OUTPUT, 0) /* (A13) SPI0_D0 */
+ AM64X_IOPAD(0x0218, PIN_INPUT, 0) /* (A14) SPI0_D1 */
+ >;
+ };
+};
+
+&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>;
+ };
+
+ /* 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";
+};
+
+&main_spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_spi0_pins_default>;
+ ti,pindir-d0-out-d1-in = <1>;
+ eeprom at 0 {
+ compatible = "eeprom-93xx46";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cs-high;
+ data-size = <16>;
+ };
+};
+
+&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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