183 lines
4.9 KiB
C
183 lines
4.9 KiB
C
/*
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* Copyright (C) 2014 Raphaël Poggi
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* Copyright (C) 2012 Steffen Trumtrar, Pengutronix
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*
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* based on arch/arm/boards/freescale-mx6-arm2/board.c
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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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#include <common.h>
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#include <init.h>
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#include <environment.h>
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#include <mach/imx6-regs.h>
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#include <fec.h>
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#include <gpio.h>
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#include <mach/bbu.h>
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#include <asm/armlinux.h>
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#include <generated/mach-types.h>
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#include <partition.h>
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#include <linux/phy.h>
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#include <asm/io.h>
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#include <asm/mmu.h>
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#include <mach/generic.h>
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#include <sizes.h>
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#include <net.h>
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#include <linux/micrel_phy.h>
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#include <mach/imx6.h>
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#include <mach/devices-imx6.h>
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#include <mach/iomux-mx6.h>
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#include <spi/spi.h>
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#include <mach/spi.h>
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#include <mach/usb.h>
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static iomux_v3_cfg_t udoo_enet_gpio_pads_1[] = {
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/* RGMII reset */
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MX6Q_PAD_EIM_D23__GPIO_3_23 | MUX_PAD_CTRL(NO_PAD_CTRL),
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/* alimentazione ethernet*/
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MX6Q_PAD_EIM_EB3__GPIO_2_31 | MUX_PAD_CTRL(NO_PAD_CTRL),
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/* pin 32 - 1 - (MODE0) all */
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MX6Q_PAD_RGMII_RD0__GPIO_6_25 | MUX_PAD_CTRL(NO_PAD_CTRL),
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/* pin 31 - 1 - (MODE1) all */
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MX6Q_PAD_RGMII_RD1__GPIO_6_27 | MUX_PAD_CTRL(NO_PAD_CTRL),
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/* pin 28 - 1 - (MODE2) all */
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MX6Q_PAD_RGMII_RD2__GPIO_6_28 | MUX_PAD_CTRL(NO_PAD_CTRL),
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/* pin 27 - 1 - (MODE3) all */
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MX6Q_PAD_RGMII_RD3__GPIO_6_29 | MUX_PAD_CTRL(NO_PAD_CTRL),
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/* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
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MX6Q_PAD_RGMII_RX_CTL__GPIO_6_24 | MUX_PAD_CTRL(NO_PAD_CTRL),
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};
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static iomux_v3_cfg_t udoo_enet_gpio_pads_2[] = {
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/* Ethernet */
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MX6Q_PAD_RGMII_RXC__GPIO_6_30, /* PHYAD */
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MX6Q_PAD_RGMII_RD0__GPIO_6_25, /* MODE0 */
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MX6Q_PAD_RGMII_RD1__GPIO_6_27, /* MODE1 */
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MX6Q_PAD_RGMII_RD2__GPIO_6_28, /* MODE2 */
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MX6Q_PAD_RGMII_RD3__GPIO_6_29, /* MODE3 */
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MX6Q_PAD_RGMII_RX_CTL__ENET_RGMII_RX_CTL,
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};
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static int ksz9021rn_phy_fixup(struct phy_device *dev)
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{
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phy_write(dev, 0x09, 0x1c00);
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phy_write(dev, 0x4, 0x0000);
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phy_write(dev, 0x5, 0x0000);
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phy_write(dev, 0x6, 0x0000);
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phy_write(dev, 0x8, 0x03ff);
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/* do same as linux kernel */
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/* min rx data delay */
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phy_write(dev, 0x0b, 0x8105);
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phy_write(dev, 0x0c, 0x0000);
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/* max rx/tx clock delay, min rx/tx control delay */
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phy_write(dev, 0x0b, 0x8104);
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phy_write(dev, 0x0c, 0xf0f0);
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phy_write(dev, 0x0b, 0x104);
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return 0;
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}
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static int udoo_ksz9021rn_setup(void)
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{
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if (!of_machine_is_compatible("udoo,imx6qdl-udoo"))
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return 0;
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mxc_iomux_v3_setup_multiple_pads(udoo_enet_gpio_pads_1,
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ARRAY_SIZE(udoo_enet_gpio_pads_1));
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gpio_direction_output(IMX_GPIO_NR(2, 31) , 1); /* Power on enet */
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/* MODE strap-in pins: advertise all capabilities */
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gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
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gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
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gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
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gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
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gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
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mdelay(100);
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gpio_free(IMX_GPIO_NR(6, 24));
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gpio_free(IMX_GPIO_NR(6, 25));
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gpio_free(IMX_GPIO_NR(6, 27));
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gpio_free(IMX_GPIO_NR(6, 28));
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gpio_free(IMX_GPIO_NR(6, 29));
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mxc_iomux_v3_setup_multiple_pads(udoo_enet_gpio_pads_2, ARRAY_SIZE(udoo_enet_gpio_pads_2));
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return 0;
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}
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/*
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* Do this before the fec initializes but after our
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* gpios are available.
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*/
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fs_initcall(udoo_ksz9021rn_setup);
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static void udoo_ehci_init(void)
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{
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/* hub reset */
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gpio_direction_output(204, 0);
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udelay(2000);
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gpio_set_value(204, 1);
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}
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static iomux_v3_cfg_t const wdog_pads[] = {
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MX6Q_PAD_EIM_A24__GPIO_5_4 | MUX_PAD_CTRL(NO_PAD_CTRL),
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MX6Q_PAD_EIM_D19__EPIT1_EPITO,
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};
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#define WDT_EN IMX_GPIO_NR(5, 4)
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#define WDT_TRG IMX_GPIO_NR(3, 19)
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static void udoo_wdog_init(void)
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{
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mxc_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
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gpio_direction_output(WDT_TRG, 0);
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gpio_direction_output(WDT_EN, 1);
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gpio_direction_input(WDT_TRG);
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}
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static void udoo_epit_init(void)
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{
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writel(0x0000000, MX6_EPIT1_BASE_ADDR);
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writel(0x142000F, MX6_EPIT1_BASE_ADDR);
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writel(0x30000, MX6_EPIT1_BASE_ADDR + 0x8);
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writel(0x0, MX6_EPIT1_BASE_ADDR + 0xC);
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}
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static int udoo_devices_init(void)
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{
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if (!of_machine_is_compatible("udoo,imx6qdl-udoo"))
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return 0;
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udoo_wdog_init();
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udoo_ehci_init();
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udoo_epit_init();
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armlinux_set_bootparams((void *)0x10000100);
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barebox_set_hostname("udoo");
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return 0;
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}
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device_initcall(udoo_devices_init);
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static int udoo_coredevices_init(void)
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{
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if (!of_machine_is_compatible("udoo,imx6qdl-udoo"))
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return 0;
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phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
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ksz9021rn_phy_fixup);
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return 0;
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}
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coredevice_initcall(udoo_coredevices_init);
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