diff options
Diffstat (limited to 'arch/arm/boards/udoo/board.c')
| -rw-r--r-- | arch/arm/boards/udoo/board.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/arch/arm/boards/udoo/board.c b/arch/arm/boards/udoo/board.c new file mode 100644 index 0000000000..3846d4b1b8 --- /dev/null +++ b/arch/arm/boards/udoo/board.c @@ -0,0 +1,194 @@ +/* + * Copyright (C) 2014 Raphaël Poggi + * Copyright (C) 2012 Steffen Trumtrar, Pengutronix + * + * based on arch/arm/boards/freescale-mx6-arm2/board.c + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program 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. + */ + +#include <common.h> +#include <init.h> +#include <environment.h> +#include <mach/imx6-regs.h> +#include <fec.h> +#include <gpio.h> +#include <mach/bbu.h> +#include <asm/armlinux.h> +#include <generated/mach-types.h> +#include <partition.h> +#include <linux/phy.h> +#include <asm/io.h> +#include <asm/mmu.h> +#include <mach/generic.h> +#include <sizes.h> +#include <net.h> +#include <linux/micrel_phy.h> +#include <mach/imx6.h> +#include <mach/devices-imx6.h> +#include <mach/iomux-mx6.h> +#include <spi/spi.h> +#include <mach/spi.h> +#include <mach/usb.h> + +static iomux_v3_cfg_t udoo_enet_gpio_pads_1[] = { + /* RGMII reset */ + MX6Q_PAD_EIM_D23__GPIO_3_23 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* alimentazione ethernet*/ + MX6Q_PAD_EIM_EB3__GPIO_2_31 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* pin 32 - 1 - (MODE0) all */ + MX6Q_PAD_RGMII_RD0__GPIO_6_25 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* pin 31 - 1 - (MODE1) all */ + MX6Q_PAD_RGMII_RD1__GPIO_6_27 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* pin 28 - 1 - (MODE2) all */ + MX6Q_PAD_RGMII_RD2__GPIO_6_28 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* pin 27 - 1 - (MODE3) all */ + MX6Q_PAD_RGMII_RD3__GPIO_6_29 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */ + MX6Q_PAD_RGMII_RX_CTL__GPIO_6_24 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static iomux_v3_cfg_t udoo_enet_gpio_pads_2[] = { + /* Ethernet */ + MX6Q_PAD_RGMII_RXC__GPIO_6_30, /* PHYAD */ + MX6Q_PAD_RGMII_RD0__GPIO_6_25, /* MODE0 */ + MX6Q_PAD_RGMII_RD1__GPIO_6_27, /* MODE1 */ + MX6Q_PAD_RGMII_RD2__GPIO_6_28, /* MODE2 */ + MX6Q_PAD_RGMII_RD3__GPIO_6_29, /* MODE3 */ + MX6Q_PAD_RGMII_RX_CTL__ENET_RGMII_RX_CTL, +}; + +static int ksz9021rn_phy_fixup(struct phy_device *dev) +{ + + phy_write(dev, 0x09, 0x1c00); + phy_write(dev, 0x4, 0x0000); + phy_write(dev, 0x5, 0x0000); + phy_write(dev, 0x6, 0x0000); + phy_write(dev, 0x8, 0x03ff); + + /* do same as linux kernel */ + /* min rx data delay */ + phy_write(dev, 0x0b, 0x8105); + phy_write(dev, 0x0c, 0x0000); + + /* max rx/tx clock delay, min rx/tx control delay */ + phy_write(dev, 0x0b, 0x8104); + phy_write(dev, 0x0c, 0xf0f0); + phy_write(dev, 0x0b, 0x104); + + return 0; +} + +static int udoo_ksz9021rn_setup(void) +{ + if (!of_machine_is_compatible("udoo,imx6qdl-udoo")) + return 0; + + mxc_iomux_v3_setup_multiple_pads(udoo_enet_gpio_pads_1, + ARRAY_SIZE(udoo_enet_gpio_pads_1)); + + gpio_direction_output(IMX_GPIO_NR(2, 31) , 1); /* Power on enet */ + + /* MODE strap-in pins: advertise all capabilities */ + gpio_direction_output(IMX_GPIO_NR(6, 24), 1); + gpio_direction_output(IMX_GPIO_NR(6, 25), 1); + gpio_direction_output(IMX_GPIO_NR(6, 27), 1); + gpio_direction_output(IMX_GPIO_NR(6, 28), 1); + gpio_direction_output(IMX_GPIO_NR(6, 29), 1); + + mdelay(100); + + gpio_free(IMX_GPIO_NR(6, 24)); + gpio_free(IMX_GPIO_NR(6, 25)); + gpio_free(IMX_GPIO_NR(6, 27)); + gpio_free(IMX_GPIO_NR(6, 28)); + gpio_free(IMX_GPIO_NR(6, 29)); + + mxc_iomux_v3_setup_multiple_pads(udoo_enet_gpio_pads_2, ARRAY_SIZE(udoo_enet_gpio_pads_2)); + + return 0; +} +/* + * Do this before the fec initializes but after our + * gpios are available. + */ +fs_initcall(udoo_ksz9021rn_setup); + +static void udoo_ehci_init(void) +{ + /* hub reset */ + gpio_direction_output(204, 0); + udelay(2000); + gpio_set_value(204, 1); +} + +static iomux_v3_cfg_t const wdog_pads[] = { + MX6Q_PAD_EIM_A24__GPIO_5_4 | MUX_PAD_CTRL(NO_PAD_CTRL), + MX6Q_PAD_EIM_D19__EPIT1_EPITO, +}; + +#define WDT_EN IMX_GPIO_NR(5, 4) +#define WDT_TRG IMX_GPIO_NR(3, 19) +static void udoo_wdog_init(void) +{ + mxc_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads)); + gpio_direction_output(WDT_TRG, 0); + gpio_direction_output(WDT_EN, 1); + gpio_direction_input(WDT_TRG); +} + +static void udoo_epit_init(void) +{ + writel(0x0000000, MX6_EPIT1_BASE_ADDR); + writel(0x142000F, MX6_EPIT1_BASE_ADDR); + writel(0x30000, MX6_EPIT1_BASE_ADDR + 0x8); + writel(0x0, MX6_EPIT1_BASE_ADDR + 0xC); +} + +static int udoo_devices_init(void) +{ + if (!of_machine_is_compatible("udoo,imx6qdl-udoo")) + return 0; + + udoo_wdog_init(); + udoo_ehci_init(); + udoo_epit_init(); + + armlinux_set_bootparams((void *)0x10000100); + + return 0; +} +device_initcall(udoo_devices_init); + +static int udoo_coredevices_init(void) +{ + if (!of_machine_is_compatible("udoo,imx6qdl-udoo")) + return 0; + + phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK, + ksz9021rn_phy_fixup); + return 0; +} +coredevice_initcall(udoo_coredevices_init); + +static int udoo_postcore_init(void) +{ + if (!of_machine_is_compatible("udoo,imx6qdl-udoo")) + return 0; + + imx6_init_lowlevel(); + + barebox_set_hostname("udoo"); + + return 0; +} +postcore_initcall(udoo_postcore_init); |