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- // 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;
- }
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