arm: dts: Add support for A72 specific AM68 Starter Kit Base Board

The SK architecture comprises of baseboard and a SOM board. The
AM68 Starter Kit's baseboard contains most of the actual connectors,
power supply etc. The System on Module (SoM) is plugged on to the base
board. Therefore, add support for peripherals brought out in the base
board.

Schematics: https://www.ti.com/lit/zip/SPRR463

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>

3 files changed, 505 insertions, 1 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 8e83194249d..d3970767603 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1254,7 +1254,8 @@ dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb \
 			      k3-j7200-r5-common-proc-board.dtb \
 			      k3-j721e-sk.dtb \
 			      k3-j721e-r5-sk.dtb
-dtb-$(CONFIG_SOC_K3_J721S2) += k3-j721s2-common-proc-board.dtb\
+dtb-$(CONFIG_SOC_K3_J721S2) += k3-am68-sk-base-board.dtb\
+			       k3-j721s2-common-proc-board.dtb\
 			       k3-j721s2-r5-common-proc-board.dtb
 dtb-$(CONFIG_SOC_K3_AM642) += k3-am642-evm.dtb \
 			      k3-am642-r5-evm.dtb \
diff --git a/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi b/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
new file mode 100644
index 00000000000..12faaae59b1
--- /dev/null
+++ b/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/ {
+	chosen {
+		stdout-path = "serial2:115200n8";
+		tick-timer = &timer1;
+	};
+
+	aliases {
+		serial0 = &wkup_uart0;
+		serial1 = &mcu_uart0;
+		serial2 = &main_uart8;
+		i2c0 = &wkup_i2c0;
+		i2c1 = &mcu_i2c0;
+		i2c2 = &mcu_i2c1;
+		i2c3 = &main_i2c0;
+		ethernet0 = &cpsw_port1;
+		mmc1 = &main_sdhci1;
+	};
+};
+
+&wkup_i2c0 {
+	u-boot,dm-spl;
+};
+
+&cbass_main {
+	u-boot,dm-spl;
+};
+
+&main_navss {
+	u-boot,dm-spl;
+};
+
+&cbass_mcu_wakeup {
+	u-boot,dm-spl;
+
+	timer1: timer@40400000 {
+		compatible = "ti,omap5430-timer";
+		reg = <0x0 0x40400000 0x0 0x80>;
+		ti,timer-alwon;
+		clock-frequency = <250000000>;
+		u-boot,dm-spl;
+	};
+
+	chipid@43000014 {
+		u-boot,dm-spl;
+	};
+};
+
+&mcu_navss {
+	u-boot,dm-spl;
+};
+
+&mcu_ringacc {
+	reg =   <0x0 0x2b800000 0x0 0x400000>,
+		<0x0 0x2b000000 0x0 0x400000>,
+		<0x0 0x28590000 0x0 0x100>,
+		<0x0 0x2a500000 0x0 0x40000>,
+		<0x0 0x28440000 0x0 0x40000>;
+	reg-names = "rt", "fifos", "proxy_gcfg", "proxy_target", "cfg";
+	u-boot,dm-spl;
+};
+
+&mcu_udmap {
+	reg =   <0x0 0x285c0000 0x0 0x100>,
+		<0x0 0x284c0000 0x0 0x4000>,
+		<0x0 0x2a800000 0x0 0x40000>,
+		<0x0 0x284a0000 0x0 0x4000>,
+		<0x0 0x2aa00000 0x0 0x40000>,
+		<0x0 0x28400000 0x0 0x2000>;
+	reg-names = "gcfg", "rchan", "rchanrt", "tchan",
+		    "tchanrt", "rflow";
+	u-boot,dm-spl;
+};
+
+&secure_proxy_main {
+	u-boot,dm-spl;
+};
+
+&sms {
+	u-boot,dm-spl;
+	k3_sysreset: sysreset-controller {
+		compatible = "ti,sci-sysreset";
+		u-boot,dm-spl;
+	};
+};
+
+&main_pmx0 {
+	u-boot,dm-spl;
+};
+
+&main_uart8_pins_default {
+	u-boot,dm-spl;
+};
+
+&main_mmc1_pins_default {
+	u-boot,dm-spl;
+};
+
+&wkup_pmx0 {
+	u-boot,dm-spl;
+};
+
+&k3_pds {
+	u-boot,dm-spl;
+};
+
+&k3_clks {
+	u-boot,dm-spl;
+};
+
+&k3_reset {
+	u-boot,dm-spl;
+};
+
+&main_uart8 {
+	u-boot,dm-spl;
+};
+
+&mcu_uart0 {
+	u-boot,dm-spl;
+};
+
+&wkup_uart0 {
+	u-boot,dm-spl;
+};
+
+&mcu_cpsw {
+	reg = <0x0 0x46000000 0x0 0x200000>,
+	      <0x0 0x40f00200 0x0 0x8>;
+	reg-names = "cpsw_nuss", "mac_efuse";
+	/delete-property/ ranges;
+
+	cpsw-phy-sel@40f04040 {
+		compatible = "ti,am654-cpsw-phy-sel";
+		reg= <0x0 0x40f04040 0x0 0x4>;
+		reg-names = "gmii-sel";
+	};
+};
+
+&main_sdhci0 {
+	status = "disabled";
+};
+
+&main_sdhci1 {
+	u-boot,dm-spl;
+};
diff --git a/arch/arm/dts/k3-am68-sk-base-board.dts b/arch/arm/dts/k3-am68-sk-base-board.dts
new file mode 100644
index 00000000000..8fc03324ab8
--- /dev/null
+++ b/arch/arm/dts/k3-am68-sk-base-board.dts
@@ -0,0 +1,353 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ * Base Board: **Yet to Add**
+ */
+
+/dts-v1/;
+
+#include "k3-am68-sk-som.dtsi"
+#include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/phy/phy-cadence.h>
+#include <dt-bindings/phy/phy.h>
+
+/ {
+	compatible = "ti,am68-sk", "ti,j721s2";
+	model = "Texas Instruments AM68 SK";
+
+	chosen {
+		stdout-path = "serial2:115200n8";
+		bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x2880000";
+	};
+
+	aliases {
+		serial2 = &main_uart8;
+		mmc1 = &main_sdhci1;
+	};
+
+	vusb_main: fixedregulator-vusb-main5v0 {
+		/* USB MAIN INPUT 5V DC */
+		compatible = "regulator-fixed";
+		regulator-name = "vusb-main5v0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vsys_3v3: fixedregulator-vsys3v3 {
+		/* Output of LM5141 */
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vusb_main>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vdd_mmc1: fixedregulator-sd {
+		/* Output of TPS22918 */
+		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 10 GPIO_ACTIVE_HIGH>;
+	};
+
+	vdd_sd_dv: gpio-regulator-TLV71033 {
+		/* Output of TLV71033 */
+		compatible = "regulator-gpio";
+		regulator-name = "tlv71033";
+		pinctrl-names = "default";
+		pinctrl-0 = <&vdd_sd_dv_pins_default>;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		vin-supply = <&vsys_3v3>;
+		gpios = <&main_gpio0 49 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x0>,
+			 <3300000 0x1>;
+	};
+};
+
+&main_pmx0 {
+	main_uart8_pins_default: main-uart8-pins-default {
+		pinctrl-single,pins = <
+			J721S2_IOPAD(0x040, PIN_INPUT, 14) /* (AC28) MCASP0_AXR0.UART8_CTSn */
+			J721S2_IOPAD(0x044, PIN_OUTPUT, 14) /* (Y26) MCASP0_AXR1.UART8_RTSn */
+			J721S2_IOPAD(0x0d0, PIN_INPUT, 11) /* (AF26) SPI0_CS1.UART8_RXD */
+			J721S2_IOPAD(0x0d4, PIN_OUTPUT, 11) /* (AH27) SPI0_CLK.UART8_TXD */
+		>;
+	};
+
+	main_i2c0_pins_default: i2c0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_IOPAD(0x0e0, PIN_INPUT_PULLUP, 0) /* (AH25) I2C0_SCL */
+			J721S2_IOPAD(0x0e4, PIN_INPUT_PULLUP, 0) /* (AE24) I2C0_SDA */
+		>;
+	};
+
+	main_mmc1_pins_default: main-mmc1-pins-default {
+		pinctrl-single,pins = <
+			J721S2_IOPAD(0x104, PIN_INPUT, 0) /* (P23) MMC1_CLK */
+			J721S2_IOPAD(0x108, PIN_INPUT, 0) /* (N24) MMC1_CMD */
+			J721S2_IOPAD(0x100, PIN_INPUT, 0) /* (###) MMC1_CLKLB */
+			J721S2_IOPAD(0x0fc, PIN_INPUT, 0) /* (M23) MMC1_DAT0 */
+			J721S2_IOPAD(0x0f8, PIN_INPUT, 0) /* (P24) MMC1_DAT1 */
+			J721S2_IOPAD(0x0f4, PIN_INPUT, 0) /* (R24) MMC1_DAT2 */
+			J721S2_IOPAD(0x0f0, PIN_INPUT, 0) /* (R22) MMC1_DAT3 */
+			J721S2_IOPAD(0x0e8, PIN_INPUT, 8) /* (AE25) TIMER_IO0.MMC1_SDCD */
+		>;
+	};
+
+	vdd_sd_dv_pins_default: vdd-sd-dv-pins-default {
+		pinctrl-single,pins = <
+			J721S2_IOPAD(0x0c4, PIN_INPUT, 7) /* (AB26) ECAP0_IN_APWM_OUT.GPIO0_49 */
+		>;
+	};
+};
+
+&wkup_pmx0 {
+	mcu_cpsw_pins_default: mcu-cpsw-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x094, PIN_INPUT, 0) /* (B22) MCU_RGMII1_RD0 */
+			J721S2_WKUP_IOPAD(0x090, PIN_INPUT, 0) /* (B21) MCU_RGMII1_RD1 */
+			J721S2_WKUP_IOPAD(0x08c, PIN_INPUT, 0) /* (C22) MCU_RGMII1_RD2 */
+			J721S2_WKUP_IOPAD(0x088, PIN_INPUT, 0) /* (D23) MCU_RGMII1_RD3 */
+			J721S2_WKUP_IOPAD(0x084, PIN_INPUT, 0) /* (D22) MCU_RGMII1_RXC */
+			J721S2_WKUP_IOPAD(0x06c, PIN_INPUT, 0) /* (E23) MCU_RGMII1_RX_CTL */
+			J721S2_WKUP_IOPAD(0x07c, PIN_OUTPUT, 0) /* (F23) MCU_RGMII1_TD0 */
+			J721S2_WKUP_IOPAD(0x078, PIN_OUTPUT, 0) /* (G22) MCU_RGMII1_TD1 */
+			J721S2_WKUP_IOPAD(0x074, PIN_OUTPUT, 0) /* (E21) MCU_RGMII1_TD2 */
+			J721S2_WKUP_IOPAD(0x070, PIN_OUTPUT, 0) /* (E22) MCU_RGMII1_TD3 */
+			J721S2_WKUP_IOPAD(0x080, PIN_OUTPUT, 0) /* (F21) MCU_RGMII1_TXC */
+			J721S2_WKUP_IOPAD(0x068, PIN_OUTPUT, 0) /* (F22) MCU_RGMII1_TX_CTL */
+		>;
+	};
+
+	mcu_mdio_pins_default: mcu-mdio-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x09c, PIN_OUTPUT, 0) /* (A21) MCU_MDIO0_MDC */
+			J721S2_WKUP_IOPAD(0x098, PIN_INPUT, 0) /* (A22) MCU_MDIO0_MDIO */
+		>;
+	};
+};
+
+&main_gpio2 {
+	status = "disabled";
+};
+
+&main_gpio4 {
+	status = "disabled";
+};
+
+&main_gpio6 {
+	status = "disabled";
+};
+
+&wkup_gpio1 {
+	status = "disabled";
+};
+
+&wkup_uart0 {
+	status = "reserved";
+};
+
+&main_uart0 {
+	status = "disabled";
+};
+
+&main_uart1 {
+	status = "disabled";
+};
+
+&main_uart2 {
+	status = "disabled";
+};
+
+&main_uart3 {
+	status = "disabled";
+};
+
+&main_uart4 {
+	status = "disabled";
+};
+
+&main_uart5 {
+	status = "disabled";
+};
+
+&main_uart6 {
+	status = "disabled";
+};
+
+&main_uart7 {
+	status = "disabled";
+};
+
+&main_uart8 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart8_pins_default>;
+	/* Shared with TFA on this platform */
+	power-domains = <&k3_pds 357 TI_SCI_PD_SHARED>;
+};
+
+&main_uart9 {
+	status = "disabled";
+};
+
+&main_i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_i2c0_pins_default>;
+	clock-frequency = <400000>;
+
+	exp1: gpio@21 {
+		compatible = "ti,tca6416";
+		reg = <0x21>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "CSI_VIO_SEL", "CSI_SEL_FPC_EXPN", "HDMI_PDN",
+				  "HDMI_LS_OE", "DP0_3V3_EN", "BOARDID_EEPROM_WP",
+				  "CAN_STB", "","GPIO_uSD_PWR_EN", "EDP_ENABLE",
+				  "IO_EXP_PCIE1_M2_RSTZ", "IO_EXP_MCU_RGMII_RSTZ",
+				  "IO_EXP_CSI1_EXP_RSTZ", "","CSI0_B_GPIO1",
+				  "CSI1_B_GPIO1";
+	};
+};
+
+&main_i2c1 {
+	status = "disabled";
+};
+
+&main_i2c2 {
+	status = "disabled";
+};
+
+&main_i2c3 {
+	status = "disabled";
+};
+
+&main_i2c4 {
+	status = "disabled";
+};
+
+&main_i2c5 {
+	status = "disabled";
+};
+
+&main_i2c6 {
+	status = "disabled";
+};
+
+&main_sdhci0 {
+	status = "disabled";
+};
+
+&main_sdhci1 {
+	/* SD card */
+	pinctrl-0 = <&main_mmc1_pins_default>;
+	pinctrl-names = "default";
+	disable-wp;
+	vmmc-supply = <&vdd_mmc1>;
+	vqmmc-supply = <&vdd_sd_dv>;
+};
+
+&mcu_cpsw {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>;
+};
+
+&davinci_mdio {
+	phy0: ethernet-phy@0 {
+		reg = <0>;
+		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
+		ti,min-output-impedance;
+	};
+};
+
+&cpsw_port1 {
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&phy0>;
+};
+
+&mcu_mcan0 {
+	status = "disabled";
+};
+
+&mcu_mcan1 {
+	status = "disabled";
+};
+
+&main_mcan0 {
+	status = "disabled";
+};
+
+&main_mcan1 {
+	status = "disabled";
+};
+
+&main_mcan2 {
+	status = "disabled";
+};
+
+&main_mcan3 {
+	status = "disabled";
+};
+
+&main_mcan4 {
+	status = "disabled";
+};
+
+&main_mcan5 {
+	status = "disabled";
+};
+
+&main_mcan6 {
+	status = "disabled";
+};
+
+&main_mcan7 {
+	status = "disabled";
+};
+
+&main_mcan8 {
+	status = "disabled";
+};
+
+&main_mcan9 {
+	status = "disabled";
+};
+
+&main_mcan10 {
+	status = "disabled";
+};
+
+&main_mcan11 {
+	status = "disabled";
+};
+
+&main_mcan12 {
+	status = "disabled";
+};
+
+&main_mcan13 {
+	status = "disabled";
+};
+
+&main_mcan14 {
+	status = "disabled";
+};
+
+&main_mcan15 {
+	status = "disabled";
+};
+
+&main_mcan17 {
+	status = "disabled";
+};