diff options
Diffstat (limited to 'roms/u-boot/board/udoo/udoo.c')
| -rw-r--r-- | roms/u-boot/board/udoo/udoo.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/roms/u-boot/board/udoo/udoo.c b/roms/u-boot/board/udoo/udoo.c new file mode 100644 index 000000000..5c49388cb --- /dev/null +++ b/roms/u-boot/board/udoo/udoo.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + * Author: Fabio Estevam <fabio.estevam@freescale.com> + */ + +#include <init.h> +#include <net.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux.h> +#include <env.h> +#include <malloc.h> +#include <asm/arch/mx6-pins.h> +#include <asm/global_data.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <asm/gpio.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/sata.h> +#include <asm/arch/crm_regs.h> +#include <asm/io.h> +#include <asm/arch/sys_proto.h> +#include <micrel.h> +#include <miiphy.h> +#include <netdev.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_SRE_FAST | PAD_CTL_HYS) + +#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) + +#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \ + PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ + PAD_CTL_SRE_FAST | PAD_CTL_HYS) + +#define WDT_EN IMX_GPIO_NR(5, 4) +#define WDT_TRG IMX_GPIO_NR(3, 19) + +int dram_init(void) +{ + gd->ram_size = imx_ddr_size(); + + return 0; +} + +static iomux_v3_cfg_t const uart2_pads[] = { + IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), +}; + +static iomux_v3_cfg_t const wdog_pads[] = { + IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19), +}; + +int mx6_rgmii_rework(struct phy_device *phydev) +{ + /* + * Bug: Apparently uDoo does not works with Gigabit switches... + * Limiting speed to 10/100Mbps, and setting master mode, seems to + * be the only way to have a successfull PHY auto negotiation. + * How to fix: Understand why Linux kernel do not have this issue. + */ + phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00); + + /* control data pad skew - devaddr = 0x02, register = 0x04 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); + /* rx data pad skew - devaddr = 0x02, register = 0x05 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); + /* tx data pad skew - devaddr = 0x02, register = 0x05 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); + /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_CLOCK_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF); + return 0; +} + +static void setup_iomux_enet(void) +{ + gpio_direction_output(IMX_GPIO_NR(2, 31), 1); /* Power supply on */ + + gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* assert PHY rst */ + + 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); + udelay(1000); + + gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* deassert PHY rst */ + + /* Need 100ms delay to exit from reset. */ + udelay(1000 * 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)); +} + +static void setup_iomux_uart(void) +{ + SETUP_IOMUX_PADS(uart2_pads); +} + +static void setup_iomux_wdog(void) +{ + SETUP_IOMUX_PADS(wdog_pads); + gpio_direction_output(WDT_TRG, 0); + gpio_direction_output(WDT_EN, 1); + gpio_direction_input(WDT_TRG); +} + +int board_early_init_f(void) +{ + setup_iomux_wdog(); + setup_iomux_uart(); + + return 0; +} + +int board_phy_config(struct phy_device *phydev) +{ + mx6_rgmii_rework(phydev); + if (phydev->drv->config) + phydev->drv->config(phydev); + + return 0; +} + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + return 0; +} + +int board_late_init(void) +{ +#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG + if (is_cpu_type(MXC_CPU_MX6Q)) + env_set("board_rev", "MX6Q"); + else + env_set("board_rev", "MX6DL"); +#endif + setup_iomux_enet(); + + return 0; +} + +int checkboard(void) +{ + if (is_cpu_type(MXC_CPU_MX6Q)) + puts("Board: Udoo Quad\n"); + else + puts("Board: Udoo DualLite\n"); + + return 0; +} |