154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/*
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* Copyright (C) 2012 Steffen Trumtrar, Pengutronix
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation.
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*
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*/
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#include <generated/mach-types.h>
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#include <environment.h>
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#include <bootsource.h>
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#include <partition.h>
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#include <common.h>
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#include <envfs.h>
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#include <sizes.h>
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#include <init.h>
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#include <gpio.h>
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#include <fec.h>
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#include <of.h>
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#include <linux/micrel_phy.h>
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#include <mfd/stmpe-i2c.h>
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#include <asm/armlinux.h>
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#include <asm/io.h>
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#include <mach/devices-imx6.h>
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#include <mach/imx6-regs.h>
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#include <mach/iomux-mx6.h>
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#include <mach/imx6-mmdc.h>
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#include <mach/generic.h>
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#include <mach/imx6.h>
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#include <mach/bbu.h>
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#define RQ7_GPIO_ENET_PHYADD2 IMX_GPIO_NR(6, 30)
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#define RQ7_GPIO_ENET_MODE0 IMX_GPIO_NR(6, 25)
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#define RQ7_GPIO_ENET_MODE1 IMX_GPIO_NR(6, 27)
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#define RQ7_GPIO_ENET_MODE2 IMX_GPIO_NR(6, 28)
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#define RQ7_GPIO_ENET_MODE3 IMX_GPIO_NR(6, 29)
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#define RQ7_GPIO_ENET_EN_CLK125 IMX_GPIO_NR(6, 24)
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static iomux_v3_cfg_t realq7_pads_gpio[] = {
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MX6Q_PAD_RGMII_RXC__GPIO_6_30,
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MX6Q_PAD_RGMII_RD0__GPIO_6_25,
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MX6Q_PAD_RGMII_RD1__GPIO_6_27,
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MX6Q_PAD_RGMII_RD2__GPIO_6_28,
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MX6Q_PAD_RGMII_RD3__GPIO_6_29,
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MX6Q_PAD_RGMII_RX_CTL__GPIO_6_24,
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};
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static int ksz9031rn_phy_fixup(struct phy_device *dev)
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{
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/*
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* min rx data delay, max rx/tx clock delay,
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* min rx/tx control delay
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*/
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phy_write_mmd_indirect(dev, 4, 2, 0);
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phy_write_mmd_indirect(dev, 5, 2, 0);
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phy_write_mmd_indirect(dev, 8, 2, 0x03ff);
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return 0;
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}
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static int realq7_enet_init(void)
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{
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if (!of_machine_is_compatible("dmo,imx6q-edmqmx6"))
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return 0;
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mxc_iomux_v3_setup_multiple_pads(realq7_pads_gpio, ARRAY_SIZE(realq7_pads_gpio));
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gpio_direction_output(RQ7_GPIO_ENET_PHYADD2, 0);
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gpio_direction_output(RQ7_GPIO_ENET_MODE0, 1);
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gpio_direction_output(RQ7_GPIO_ENET_MODE1, 1);
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gpio_direction_output(RQ7_GPIO_ENET_MODE2, 1);
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gpio_direction_output(RQ7_GPIO_ENET_MODE3, 1);
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gpio_direction_output(RQ7_GPIO_ENET_EN_CLK125, 1);
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gpio_direction_output(25, 0);
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mdelay(50);
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gpio_direction_output(25, 1);
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mdelay(50);
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phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK,
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ksz9031rn_phy_fixup);
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return 0;
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}
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fs_initcall(realq7_enet_init);
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static int realq7_env_init(void)
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{
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if (!of_machine_is_compatible("dmo,imx6q-edmqmx6"))
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return 0;
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imx6_bbu_internal_spi_i2c_register_handler("spiflash", "/dev/m25p0.barebox",
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BBU_HANDLER_FLAG_DEFAULT);
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imx6_bbu_internal_mmc_register_handler("mmc", "/dev/mmc3.barebox", 0);
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return 0;
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}
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late_initcall(realq7_env_init);
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static int realq7_device_init(void)
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{
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if (!of_machine_is_compatible("dmo,imx6q-edmqmx6"))
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return 0;
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gpio_direction_output(IMX_GPIO_NR(2, 22), 1);
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gpio_direction_output(IMX_GPIO_NR(2, 21), 1);
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switch (bootsource_get()) {
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case BOOTSOURCE_MMC:
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switch (bootsource_get_instance()) {
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case 2:
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of_device_enable_path("/chosen/environment-sd");
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break;
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case 3:
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of_device_enable_path("/chosen/environment-emmc");
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break;
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}
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break;
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default:
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case BOOTSOURCE_SPI:
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of_device_enable_path("/chosen/environment-spi");
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break;
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}
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return 0;
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}
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device_initcall(realq7_device_init);
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static int realq7_postcore_init(void)
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{
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if (!of_machine_is_compatible("dmo,imx6q-edmqmx6"))
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return 0;
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barebox_set_hostname("eDM-QMX6");
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imx6_init_lowlevel();
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return 0;
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}
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postcore_initcall(realq7_postcore_init);
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