Date:   Tue, 25 Jun 2019 15:34:07 +0300
From:   Andra Danciu <andradanciu1997@...il.com>
To:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org
Cc:     leoyang.li@....com, festevam@...il.com, aisheng.dong@....com,
        l.stach@...gutronix.de, angus@...ea.ca, vabhav.sharma@....com,
        pankaj.bansal@....com, bhaskar.upadhaya@....com, ping.bai@....com,
        manivannan.sadhasivam@...aro.org, richard.hu@...hnexion.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        matti.vaittinen@...rohmeurope.com, linux-imx@....com,
        daniel.baluta@....com
Subject: [PATCH v2] arm64: dts: fsl: pico-pi: Add a device tree for the PICO-PI-IMX8M

From: Richard Hu <richard.hu@...hnexion.com>

The current level of support yields a working console and is able to boot
userspace from an initial ramdisk copied via u-boot in RAM.

Additional subsystems that are active :
	- Ethernet
	- USB

Cc: Daniel Baluta <daniel.baluta@....com>
Signed-off-by: Richard Hu <richard.hu@...hnexion.com>
Signed-off-by: Andra Danciu <andradanciu1997@...il.com>
---
Changes since v1:
 - renamed wandboard-pi-8m.dts to pico-pi-8m.dts
 - removed pinctrl_csi1, pinctrl_wifi_ctrl
 - used generic name for pmic
 - removed gpo node
 - delete regulator-virtuals node
 - remove always-on property from buck1-8 and ldo3-7
 - remove pmic-buck-uses-i2c-dvs property for buck1-4

 arch/arm64/boot/dts/freescale/Makefile       |   1 +
 arch/arm64/boot/dts/freescale/pico-pi-8m.dts | 458 +++++++++++++++++++++++++++
 2 files changed, 459 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/pico-pi-8m.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index c043aca66572..538422903e8a 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -26,3 +26,4 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mq-librem5-devkit.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-rmb3.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-zest.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
+dtb-$(CONFIG_ARCH_MXC) += pico-pi-8m.dtb
diff --git a/arch/arm64/boot/dts/freescale/pico-pi-8m.dts b/arch/arm64/boot/dts/freescale/pico-pi-8m.dts
new file mode 100644
index 000000000000..23422c8fc43f
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/pico-pi-8m.dts
@@ -0,0 +1,458 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 Wandboard, Org.
+ * Copyright 2017 NXP
+ *
+ * Author: Richard Hu <hakahu@...il.com>
+ */
+
+/dts-v1/;
+
+#include "imx8mq.dtsi"
+
+/ {
+	model = "PICO-PI-8M";
+	compatible = "wand,imx8mq-pico-pi", "fsl,imx8mq";
+
+	chosen {
+		bootargs = "console=ttymxc0,115200 earlycon=ec_imx6q,0x30860000,115200";
+		stdout-path = &uart1;
+	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		reg_usb_otg_vbus: usb_otg_vbus {
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_otg_vbus>;
+			compatible = "regulator-fixed";
+			regulator-name = "usb_otg_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio3 14 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&iomuxc {
+	pinctrl-names = "default";
+
+	wand-pi-8m {
+		pinctrl_otg_vbus: otgvbusgrp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_NAND_DQS_GPIO3_IO14		0x19   /* USB OTG VBUS Enable */
+			>;
+		};
+
+		pinctrl_enet_3v3: enet3v3grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_GPIO1_IO00_GPIO1_IO0		0x19
+			>;
+		};
+
+		pinctrl_fec1: fec1grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_ENET_MDC_ENET1_MDC		0x3
+				MX8MQ_IOMUXC_ENET_MDIO_ENET1_MDIO	0x23
+				MX8MQ_IOMUXC_ENET_TD3_ENET1_RGMII_TD3	0x1f
+				MX8MQ_IOMUXC_ENET_TD2_ENET1_RGMII_TD2	0x1f
+				MX8MQ_IOMUXC_ENET_TD1_ENET1_RGMII_TD1	0x1f
+				MX8MQ_IOMUXC_ENET_TD0_ENET1_RGMII_TD0	0x1f
+				MX8MQ_IOMUXC_ENET_RD3_ENET1_RGMII_RD3	0x91
+				MX8MQ_IOMUXC_ENET_RD2_ENET1_RGMII_RD2	0x91
+				MX8MQ_IOMUXC_ENET_RD1_ENET1_RGMII_RD1	0x91
+				MX8MQ_IOMUXC_ENET_RD0_ENET1_RGMII_RD0	0x91
+				MX8MQ_IOMUXC_ENET_TXC_ENET1_RGMII_TXC	0x1f
+				MX8MQ_IOMUXC_ENET_RXC_ENET1_RGMII_RXC	0x91
+				MX8MQ_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL	0x91
+				MX8MQ_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL	0x1f
+				MX8MQ_IOMUXC_GPIO1_IO09_GPIO1_IO9	0x19
+			>;
+		};
+
+		pinctrl_i2c1: i2c1grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL			0x4000007f
+				MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA			0x4000007f
+			>;
+		};
+
+		pinctrl_i2c2: i2c2grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL			0x4000007f
+				MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA			0x4000007f
+			>;
+		};
+
+		pinctrl_uart1: uart1grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_UART1_RXD_UART1_DCE_RX		0x49
+				MX8MQ_IOMUXC_UART1_TXD_UART1_DCE_TX		0x49
+			>;
+		};
+
+		pinctrl_uart2: uart2grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_UART2_RXD_UART2_DCE_RX		0x49
+				MX8MQ_IOMUXC_UART2_TXD_UART2_DCE_TX		0x49
+				MX8MQ_IOMUXC_UART4_RXD_UART2_DCE_CTS_B		0x49
+				MX8MQ_IOMUXC_UART4_TXD_UART2_DCE_RTS_B		0x49
+			>;
+		};
+
+		pinctrl_usdhc1: usdhc1grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x83
+				MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xc3
+				MX8MQ_IOMUXC_SD1_DATA0_USDHC1_DATA0		0xc3
+				MX8MQ_IOMUXC_SD1_DATA1_USDHC1_DATA1		0xc3
+				MX8MQ_IOMUXC_SD1_DATA2_USDHC1_DATA2		0xc3
+				MX8MQ_IOMUXC_SD1_DATA3_USDHC1_DATA3		0xc3
+				MX8MQ_IOMUXC_SD1_DATA4_USDHC1_DATA4		0xc3
+				MX8MQ_IOMUXC_SD1_DATA5_USDHC1_DATA5		0xc3
+				MX8MQ_IOMUXC_SD1_DATA6_USDHC1_DATA6		0xc3
+				MX8MQ_IOMUXC_SD1_DATA7_USDHC1_DATA7		0xc3
+				MX8MQ_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x83
+			>;
+		};
+
+		pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x85
+				MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xc5
+				MX8MQ_IOMUXC_SD1_DATA0_USDHC1_DATA0		0xc5
+				MX8MQ_IOMUXC_SD1_DATA1_USDHC1_DATA1		0xc5
+				MX8MQ_IOMUXC_SD1_DATA2_USDHC1_DATA2		0xc5
+				MX8MQ_IOMUXC_SD1_DATA3_USDHC1_DATA3		0xc5
+				MX8MQ_IOMUXC_SD1_DATA4_USDHC1_DATA4		0xc5
+				MX8MQ_IOMUXC_SD1_DATA5_USDHC1_DATA5		0xc5
+				MX8MQ_IOMUXC_SD1_DATA6_USDHC1_DATA6		0xc5
+				MX8MQ_IOMUXC_SD1_DATA7_USDHC1_DATA7		0xc5
+				MX8MQ_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x85
+			>;
+		};
+
+		pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x87
+				MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xc7
+				MX8MQ_IOMUXC_SD1_DATA0_USDHC1_DATA0		0xc7
+				MX8MQ_IOMUXC_SD1_DATA1_USDHC1_DATA1		0xc7
+				MX8MQ_IOMUXC_SD1_DATA2_USDHC1_DATA2		0xc7
+				MX8MQ_IOMUXC_SD1_DATA3_USDHC1_DATA3		0xc7
+				MX8MQ_IOMUXC_SD1_DATA4_USDHC1_DATA4		0xc7
+				MX8MQ_IOMUXC_SD1_DATA5_USDHC1_DATA5		0xc7
+				MX8MQ_IOMUXC_SD1_DATA6_USDHC1_DATA6		0xc7
+				MX8MQ_IOMUXC_SD1_DATA7_USDHC1_DATA7		0xc7
+				MX8MQ_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x87
+			>;
+		};
+
+		pinctrl_usdhc2_gpio: usdhc2grpgpio {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD2_CD_B_GPIO2_IO12	0x41
+			>;
+		};
+
+		pinctrl_usdhc2: usdhc2grp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x83
+				MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xc3
+				MX8MQ_IOMUXC_SD2_DATA0_USDHC2_DATA0		0xc3
+				MX8MQ_IOMUXC_SD2_DATA1_USDHC2_DATA1		0xc3
+				MX8MQ_IOMUXC_SD2_DATA2_USDHC2_DATA2		0xc3
+				MX8MQ_IOMUXC_SD2_DATA3_USDHC2_DATA3		0xc3
+				MX8MQ_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0xc1
+			>;
+		};
+
+		pinctrl_usdhc2_100mhz: usdhc2grp100mhz {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x85
+				MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xc5
+				MX8MQ_IOMUXC_SD2_DATA0_USDHC2_DATA0		0xc5
+				MX8MQ_IOMUXC_SD2_DATA1_USDHC2_DATA1		0xc5
+				MX8MQ_IOMUXC_SD2_DATA2_USDHC2_DATA2		0xc5
+				MX8MQ_IOMUXC_SD2_DATA3_USDHC2_DATA3		0xc5
+				MX8MQ_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0xc1
+			>;
+		};
+
+		pinctrl_usdhc2_200mhz: usdhc2grp200mhz {
+			fsl,pins = <
+				MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x87
+				MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xc7
+				MX8MQ_IOMUXC_SD2_DATA0_USDHC2_DATA0		0xc7
+				MX8MQ_IOMUXC_SD2_DATA1_USDHC2_DATA1		0xc7
+				MX8MQ_IOMUXC_SD2_DATA2_USDHC2_DATA2		0xc7
+				MX8MQ_IOMUXC_SD2_DATA3_USDHC2_DATA3		0xc7
+				MX8MQ_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0xc1
+			>;
+		};
+
+		pinctrl_wdog: wdoggrp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0xc6
+			>;
+		};
+
+		pinctrl_pmic: pmicirq {
+			fsl,pins = <
+				MX8MQ_IOMUXC_GPIO1_IO03_GPIO1_IO3	0x41
+			>;
+		};
+
+		pinctrl_tusb320_irq: tusb320_irqgrp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_NAND_DATA00_GPIO3_IO6	0x41
+			>;
+		};
+
+		pinctrl_typec_ss_sel: typec_ss_selgrp {
+			fsl,pins = <
+				MX8MQ_IOMUXC_NAND_CLE_GPIO3_IO5		0x19
+			>;
+		};
+	};
+};
+
+&fec1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fec1 &pinctrl_enet_3v3>;
+	phy-mode = "rgmii-id";
+	pinctrl-assert-gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>;
+	phy-handle = <&ethphy0>;
+	fsl,magic-packet;
+	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy0: ethernet-phy@1 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <1>;
+			at803x,led-act-blind-workaround;
+			at803x,eee-disabled;
+		};
+	};
+};
+
+&i2c1 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c1>;
+	status = "okay";
+
+	typec_tusb320:tusb320@47 {
+		compatible = "ti,tusb320";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_tusb320_irq &pinctrl_typec_ss_sel>;
+		reg = <0x47>;
+		vbus-supply = <&reg_usb_otg_vbus>;
+		ss-sel-gpios = <&gpio3 5 GPIO_ACTIVE_HIGH>;
+		tusb320,int-gpio = <&gpio3 6 GPIO_ACTIVE_LOW>;
+		tusb320,select-mode = <0>;
+		tusb320,dfp-power = <0>;
+	};
+
+	pmic: pmic@4b {
+		reg = <0x4b>;
+		compatible = "rohm,bd71837";
+		/* PMIC BD71837 PMIC_nINT GPIO1_IO12 */
+		pinctrl-0 = <&pinctrl_pmic>;
+		gpio_intr = <&gpio1 3 GPIO_ACTIVE_LOW>;
+
+		regulators {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			buck1: BUCK1 {
+				regulator-name = "buck1";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-boot-on;
+				regulator-ramp-delay = <1250>;
+				rohm,dvs-run-voltage = <900000>;
+				rohm,dvs-idle-voltage = <850000>;
+				rohm,dvs-suspend-voltage = <800000>;
+			};
+
+			buck2: BUCK2 {
+				regulator-name = "buck2";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-boot-on;
+				regulator-ramp-delay = <1250>;
+				rohm,dvs-run-voltage = <1000000>;
+				rohm,dvs-idle-voltage = <900000>;
+			};
+
+			buck3: BUCK3 {
+				regulator-name = "buck3";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-boot-on;
+				rohm,dvs-run-voltage = <1000000>;
+			};
+
+			buck4: BUCK4 {
+				regulator-name = "buck4";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-boot-on;
+				rohm,dvs-run-voltage = <1000000>;
+			};
+
+			buck5: BUCK5 {
+				regulator-name = "buck5";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-boot-on;
+			};
+
+			buck6: BUCK6 {
+				regulator-name = "buck6";
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+			};
+
+			buck7: BUCK7 {
+				regulator-name = "buck7";
+				regulator-min-microvolt = <1605000>;
+				regulator-max-microvolt = <1995000>;
+				regulator-boot-on;
+			};
+
+			buck8: BUCK8 {
+				regulator-name = "buck8";
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <1400000>;
+				regulator-boot-on;
+			};
+
+			ldo1: LDO1 {
+				regulator-name = "ldo1";
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo2: LDO2 {
+				regulator-name = "ldo2";
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <900000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo3: LDO3 {
+				regulator-name = "ldo3";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+			};
+
+			ldo4: LDO4 {
+				regulator-name = "ldo4";
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-boot-on;
+			};
+
+			ldo5: LDO5 {
+				regulator-name = "ldo5";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+			};
+
+			ldo6: LDO6 {
+				regulator-name = "ldo6";
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-boot-on;
+			};
+
+			ldo7: LDO7 {
+				regulator-name = "ldo7";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+			};
+		};
+	};
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+};
+
+&uart1 { /* console */
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	status = "okay";
+};
+
+&usdhc1 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc1>;
+	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+	bus-width = <8>;
+	non-removable;
+	status = "okay";
+};
+
+&usdhc2 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
+	pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
+	pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
+	bus-width = <4>;
+	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+&usb3_phy0 {
+	status = "okay";
+};
+
+&usb_dwc3_0 {
+	extcon = <&typec_tusb320>;
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usb3_phy1 {
+	status = "okay";
+};
+
+&usb_dwc3_1 {
+	status = "okay";
+	dr_mode = "host";
+};
+
+&wdog1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_wdog>;
+	fsl,ext-reset-output;
+	status = "okay";
+};
+
+&A53_0 {
+	operating-points = <
+		/* kHz    uV */
+		1500000 1000000
+		1300000 1000000
+		1000000 900000
+		800000  900000
+	>;
+};
-- 
2.11.0

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