arch/arm/dts/imx6qdl-sr-som.dtsi

/*
 * Copyright (C) 2013,2014 Russell King
 *
 * This file is dual-licensed: you can use it either under the terms
 * of the GPL or the X11 license, at your option. Note that this dual
 * licensing only applies to this file, and not this project as a
 * whole.
 *
 *  a) This file is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License
 *     version 2 as published by the Free Software Foundation.
 *
 *     This file is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 * Or, alternatively,
 *
 *  b) Permission is hereby granted, free of charge, to any person
 *     obtaining a copy of this software and associated documentation
 *     files (the "Software"), to deal in the Software without
 *     restriction, including without limitation the rights to use,
 *     copy, modify, merge, publish, distribute, sublicense, and/or
 *     sell copies of the Software, and to permit persons to whom the
 *     Software is furnished to do so, subject to the following
 *     conditions:
 *
 *     The above copyright notice and this permission notice shall be
 *     included in all copies or substantial portions of the Software.
 *
 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *     OTHER DEALINGS IN THE SOFTWARE.
 */
#include <dt-bindings/gpio/gpio.h>

/ {
	vcc_3v3: regulator-vcc-3v3 {
		compatible = "regulator-fixed";
		regulator-always-on;
		regulator-name = "vcc_3v3";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
	};
};

&fec {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_microsom_enet_ar8035>;
	phy-handle = <&phy>;
	phy-mode = "rgmii-id";

	/*
	 * The PHY seems to require a long-enough reset duration to avoid
	 * some rare issues where the PHY gets stuck in an inconsistent and
	 * non-functional state at boot-up. 10ms proved to be fine .
	 */
	phy-reset-duration = <10>;
	phy-reset-gpios = <&gpio4 15 GPIO_ACTIVE_LOW>;
	status = "okay";

	mdio {
		#address-cells = <1>;
		#size-cells = <0>;

		phy: ethernet-phy@0 {
			/*
			 * The PHY can appear either:
			 * - AR8035: at address 0 or 4
			 * - ADIN1300: at address 1
			 * Actual address being detected at runtime.
			 */
			reg = <0xffffffff>;
			qca,clk-out-frequency = <125000000>;
			adi,phy-output-clock = "125mhz-free-running";
		};
	};
};

&iomuxc {
	microsom {
		pinctrl_microsom_enet_ar8035: microsom-enet-ar8035 {
			fsl,pins = <
				MX6QDL_PAD_ENET_MDIO__ENET_MDIO		0x1b8b0
				MX6QDL_PAD_ENET_MDC__ENET_MDC		0x1b0b0
				/* AR8035 reset */
				MX6QDL_PAD_KEY_ROW4__GPIO4_IO15		0x130b0
				/* AR8035 interrupt */
				MX6QDL_PAD_DI0_PIN2__GPIO4_IO18		0x1b0b0
				/* GPIO16 -> AR8035 25MHz */
				MX6QDL_PAD_GPIO_16__ENET_REF_CLK	0x4001b0b0
				MX6QDL_PAD_RGMII_TXC__RGMII_TXC		0x13030
				MX6QDL_PAD_RGMII_TD0__RGMII_TD0		0x1b030
				MX6QDL_PAD_RGMII_TD1__RGMII_TD1		0x1b030
				MX6QDL_PAD_RGMII_TD2__RGMII_TD2		0x1b030
				MX6QDL_PAD_RGMII_TD3__RGMII_TD3		0x1b030
				MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL	0x1b030
				/* 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		0x1b030
				/* AR8035 pin strapping: PHYADDR#0: pull down */
				MX6QDL_PAD_RGMII_RD0__RGMII_RD0		0x13030
				/* AR8035 pin strapping: PHYADDR#1: pull down */
				MX6QDL_PAD_RGMII_RD1__RGMII_RD1		0x13030
				/* AR8035 pin strapping: MODE#1: pull up */
				MX6QDL_PAD_RGMII_RD2__RGMII_RD2		0x1b030
				/* AR8035 pin strapping: MODE#3: pull up */
				MX6QDL_PAD_RGMII_RD3__RGMII_RD3		0x1b030
				/* AR8035 pin strapping: MODE#0: pull down */
				MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL	0x13030

				/*
				 * As the RMII pins are also connected to RGMII
				 * so that an AR8030 can be placed, set these
				 * to high-z with the same pulls as above.
				 * Use the GPIO settings to avoid changing the
				 * input select registers.
				 */
				MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25	0x03000
				MX6QDL_PAD_ENET_RXD0__GPIO1_IO27	0x03000
				MX6QDL_PAD_ENET_RXD1__GPIO1_IO26	0x03000
			>;
		};

		pinctrl_microsom_uart1: microsom-uart1 {
			fsl,pins = <
				MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA	0x1b0b1
				MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA	0x1b0b1
			>;
		};
	};
};

&uart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_microsom_uart1>;
	status = "okay";
};