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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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12de44f55d
The FEC driver ignores the GPIO polarity from 'phy-reset-gpios' and considers that the Ethernet PHY is active low, unless the property 'phy-reset-active-high' is present. Fix the device tree description by explicitly passing the 'GPIO_ACTIVE_LOW' flag to the 'phy-reset-gpios' property. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
100 lines
3.9 KiB
Plaintext
100 lines
3.9 KiB
Plaintext
/*
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* Copyright (C) 2013,2014 Russell King
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*
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* This describes the hookup for an AR8035 to the iMX6 on the SolidRun
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* MicroSOM.
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*
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* This file is dual-licensed: you can use it either under the terms
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* of the GPL or the X11 license, at your option. Note that this dual
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* licensing only applies to this file, and not this project as a
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* whole.
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*
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* a) This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Or, alternatively,
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*
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* b) Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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&fec {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_microsom_enet_ar8035>;
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phy-mode = "rgmii";
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phy-reset-duration = <2>;
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phy-reset-gpios = <&gpio4 15 GPIO_ACTIVE_LOW>;
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status = "okay";
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};
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&iomuxc {
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enet {
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pinctrl_microsom_enet_ar8035: microsom-enet-ar8035 {
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fsl,pins = <
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MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b8b0
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MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0
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/* AR8035 reset */
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MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x130b0
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/* AR8035 interrupt */
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MX6QDL_PAD_DI0_PIN2__GPIO4_IO18 0x80000000
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/* GPIO16 -> AR8035 25MHz */
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MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0xc0000000
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MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x80000000
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MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b030
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MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b030
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MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b030
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MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b030
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MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b030
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/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
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MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x0a0b1
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/* AR8035 pin strapping: IO voltage: pull up */
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MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b030
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/* AR8035 pin strapping: PHYADDR#0: pull down */
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MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x13030
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/* AR8035 pin strapping: PHYADDR#1: pull down */
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MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x13030
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/* AR8035 pin strapping: MODE#1: pull up */
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MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b030
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/* AR8035 pin strapping: MODE#3: pull up */
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MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b030
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/* AR8035 pin strapping: MODE#0: pull down */
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MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x13030
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/*
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* As the RMII pins are also connected to RGMII
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* so that an AR8030 can be placed, set these
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* to high-z with the same pulls as above.
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* Use the GPIO settings to avoid changing the
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* input select registers.
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*/
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MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25 0x03000
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MX6QDL_PAD_ENET_RXD0__GPIO1_IO27 0x03000
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MX6QDL_PAD_ENET_RXD1__GPIO1_IO26 0x03000
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>;
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};
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};
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};
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