[PATCH RFC 2/2] ARM: imx: initial IMX6 Cubox-i carrier-1 support

[rmk+kernel@arm.linux.org.uk (Russell King)]

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/boot/dts/Makefile                     |    1 +
 arch/arm/boot/dts/imx6dl-cubox-i-carrier-1.dts |   64 +++++++++++
 arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi |   54 +++++++++
 arch/arm/boot/dts/imx6qdl-microsom.dtsi        |  137 ++++++++++++++++++++++++
 arch/arm/mach-imx/mach-imx6q.c                 |   35 ++++++
 5 files changed, 291 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/boot/dts/imx6dl-cubox-i-carrier-1.dts
 create mode 100644 arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi
 create mode 100644 arch/arm/boot/dts/imx6qdl-microsom.dtsi

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index e95af3f..8e0fb04 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -131,6 +131,7 @@ dtb-$(CONFIG_ARCH_MXC) += \
 	imx53-mba53.dtb \
 	imx53-qsb.dtb \
 	imx53-smd.dtb \
+	imx6dl-cubox-i-carrier-1.dtb \
 	imx6dl-sabreauto.dtb \
 	imx6dl-sabresd.dtb \
 	imx6dl-wandboard.dtb \
diff --git a/arch/arm/boot/dts/imx6dl-cubox-i-carrier-1.dts b/arch/arm/boot/dts/imx6dl-cubox-i-carrier-1.dts
new file mode 100644
index 0000000..2e160c7
--- /dev/null
+++ b/arch/arm/boot/dts/imx6dl-cubox-i-carrier-1.dts
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2013 Russell King
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License version 2.
+ */
+/dts-v1/;
+
+#include "imx6dl.dtsi"
+#include "imx6qdl-microsom.dtsi"
+#include "imx6qdl-microsom-ar8035.dtsi"
+
+/ {
+	model = "SolidRun Cubox-i DL/Solo Carrier-1 Board";
+	compatible = "solidrun,cubox-i-carrier-1", "fsl,imx6dl";
+
+	ir_recv: ir-receiver {
+		compatible = "gpio-ir-receiver";
+		gpios = <&gpio1 2 1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio1_2_carrier_1>;
+	};
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c1_1>;
+
+	/*
+	 * Not fitted on Carrier-1 board... yet
+	status = "okay";
+
+	rtc: pcf8523 at 68 {
+		compatible = "nxp,pcf8523";
+		reg = <0x68>;
+	};
+	 */
+};
+
+&iomuxc {
+	ir_recv {
+		pinctrl_gpio1_2_carrier_1: gpio1_2grp {
+			fsl,pins = <
+				MX6QDL_PAD_GPIO_2__GPIO1_IO02	0x80000000
+			>;
+		};
+	};
+
+	usbhc2 {
+		pinctrl_usdhc2_cd_wp: usdhc2_cd_wp {
+			fsl,pins = <
+				MX6QDL_PAD_GPIO_4__SD2_CD_B	0x1f071
+			>;
+		};
+	};
+};
+
+&usdhc2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc2_2_dat3cd &pinctrl_usdhc2_cd_wp>;
+	vmmc-supply = <&reg_3p3v>;
+	fsl,cd-controller;
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi b/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi
new file mode 100644
index 0000000..73f20a2
--- /dev/null
+++ b/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2013 Russell King
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License version 2.
+ *
+ * This describes the hookup for an AR8035 to the IMX6 on the Cubox-i
+ * MicroSOM.
+ */
+&fec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_enet_1_ar8035>;
+	phy-mode = "rgmii";
+	phy-reset-duration = <2>;
+	phy-reset-gpios = <&gpio4 15 0>;
+	status = "okay";
+};
+
+&iomuxc {
+	enet {
+		pinctrl_enet_1_ar8035: enetgrp-ar8035 {
+			fsl,pins = <
+				MX6QDL_PAD_ENET_MDIO__ENET_MDIO		0x1b0b0
+				MX6QDL_PAD_ENET_MDC__ENET_MDC		0x1b0b0
+				/* AR8035 reset */
+				MX6QDL_PAD_KEY_ROW4__GPIO4_IO15		0x130b0
+				/* AR8035 interrupt */
+				MX6QDL_PAD_DI0_PIN2__GPIO4_IO18		0x80000000
+				/* GPIO16 -> AR8035 25MHz */
+				MX6QDL_PAD_GPIO_16__ENET_REF_CLK	0xc0000000
+				MX6QDL_PAD_RGMII_TXC__RGMII_TXC		0x80000000
+				MX6QDL_PAD_RGMII_TD0__RGMII_TD0		0x1b0b0
+				MX6QDL_PAD_RGMII_TD1__RGMII_TD1		0x1b0b0
+				MX6QDL_PAD_RGMII_TD2__RGMII_TD2		0x1b0b0
+				MX6QDL_PAD_RGMII_TD3__RGMII_TD3		0x1b0b0
+				MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL	0x1b0b0
+				/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
+				MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK	0x0a0b1
+				/* AR8035 pin strapping: IO voltage: pull up */
+				MX6QDL_PAD_RGMII_RXC__RGMII_RXC		0x1b0b0
+				/* AR8035 pin strapping: PHYADDR#0: pull down */
+				MX6QDL_PAD_RGMII_RD0__RGMII_RD0		0x130b0
+				/* AR8035 pin strapping: PHYADDR#1: pull down */
+				MX6QDL_PAD_RGMII_RD1__RGMII_RD1		0x130b0
+				/* AR8035 pin strapping: MODE#1: pull up */
+				MX6QDL_PAD_RGMII_RD2__RGMII_RD2		0x1b0b0
+				/* AR8035 pin strapping: MODE#3: pull up */
+				MX6QDL_PAD_RGMII_RD3__RGMII_RD3		0x1b0b0
+				/* AR8035 pin strapping: MODE#0: pull down */
+				MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL	0x130b0
+			>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/imx6qdl-microsom.dtsi b/arch/arm/boot/dts/imx6qdl-microsom.dtsi
new file mode 100644
index 0000000..3db6046
--- /dev/null
+++ b/arch/arm/boot/dts/imx6qdl-microsom.dtsi
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2013 Russell King
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License version 2.
+ */
+/ {
+	regulators {
+		compatible = "simple-bus";
+
+		reg_3p3v: 3p3v {
+			compatible = "regulator-fixed";
+			regulator-name = "3P3V";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+		};
+
+		reg_usb_otg_vbus: usb_otg_vbus {
+			compatible = "regulator-fixed";
+			regulator-name = "usb_otg_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio3 22 0>;
+			enable-active-high;
+		};
+
+		reg_usb_h1_vbus: usb_h1_vbus {
+			compatible = "regulator-fixed";
+			regulator-name = "usb_h1_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio1 0 0>;
+			enable-active-high;
+		};
+	};
+};
+
+&can1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan1_2>;
+	status = "okay";
+};
+
+&i2c2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2_2>;
+	status = "okay";
+
+	/* HDMI @0x50 */
+};
+
+&iomuxc {
+	pinctrl_spdif_2_out_only: spdifgrp-3 {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_17__SPDIF_OUT 0x1b0b0
+		>;
+	};
+
+	usbotg {
+		pinctrl_usbotg_cubox: usbotggrp-3 {
+			/*
+			 * Similar to pinctrl_usbotg_2, but we want it
+			 * pulled down for a fixed host connection.
+			 */
+			fsl,pins = <
+				MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x13059
+			>;
+		};
+	};
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1_1>;
+	status = "okay";
+};
+
+&usbotg {
+	vbus-supply = <&reg_usb_otg_vbus>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbotg_cubox>;
+	status = "okay";
+};
+
+&usbh1 {
+	vbus-supply = <&reg_usb_h1_vbus>;
+	status = "okay";
+};
+
+/* experimental stuff */
+
+/* USDHC1 - Connected to BRCM Wifi/BT/FM */
+&usdhc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc1_2>;
+	status = "okay";
+};
+
+/* SPDIF out */
+
+/* CAN1 */
+/* CCM */
+
+/* ECSPI2 */
+
+/* I2C1 */
+/* I2C2 - HDMI DDC */
+
+/* I2C3 */
+&i2c3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c3_1>;
+	status = "okay";
+};
+
+/* PWM */
+
+/* UART2 */
+
+/* USB OC pin */
+
+/* USDHC2 */
+
+/* USDHC3 */
+&usdhc3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc3_1>;
+	status = "disabled";
+};
+
+/* USDHC4 */
+&usdhc4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc4_1>;
+	status = "disabled";
+};
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 90372a2..222edbd 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -164,6 +164,39 @@ static int ar8031_phy_fixup(struct phy_device *dev)
 
 #define PHY_ID_AR8031	0x004dd074
 
+static int ar8035_phy_fixup(struct phy_device *dev)
+{
+	u16 val;
+
+	/* Ar803x phy SmartEEE feature cause link status generates glitch,
+	 * which cause ethernet link down/up issue, so disable SmartEEE
+	 */
+	phy_write(dev, 0xd, 0x3);
+	phy_write(dev, 0xe, 0x805d);
+	phy_write(dev, 0xd, 0x4003);
+
+	val = phy_read(dev, 0xe);
+	phy_write(dev, 0xe, val & ~(1 << 8));
+
+	/*
+	 * Enable 125MHz clock from CLK_25M on the AR8031.  This
+	 * is fed in to the IMX6 on the ENET_REF_CLK (V22) pad.
+	 * Also, introduce a tx clock delay.
+	 *
+	 * This is the same as is the AR8031 fixup.
+	 */
+	ar8031_phy_fixup(dev);
+
+	/*check phy power*/
+	val = phy_read(dev, 0x0);
+	if (val & BMCR_PDOWN)
+		phy_write(dev, 0x0, val & ~BMCR_PDOWN);
+
+	return 0;
+}
+
+#define PHY_ID_AR8035 0x004dd072
+
 static void __init imx6q_enet_phy_init(void)
 {
 	if (IS_BUILTIN(CONFIG_PHYLIB)) {
@@ -173,6 +206,8 @@ static void __init imx6q_enet_phy_init(void)
 				ksz9031rn_phy_fixup);
 		phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
 				ar8031_phy_fixup);
+		phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef,
+				ar8035_phy_fixup);
 	}
 }
 
-- 
1.7.4.4