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/*
* Copyright (C) 2013,2014 Russell King
*
* This describes the hookup for an AR8035 to the iMX6 on the SolidRun
* MicroSOM.
*
* 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.
*/
&fec {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_microsom_enet_ar8035>;
phy-mode = "rgmii";
phy-reset-duration = <2>;
phy-reset-gpios = <&gpio4 15 GPIO_ACTIVE_LOW>;
status = "okay";
};
&iomuxc {
enet {
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 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 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
>;
};
};
};
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