1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2013 Freescale Semiconductor, Inc.
10 #include <asm/arch/clock.h>
11 #include <asm/arch/imx-regs.h>
12 #include <asm/arch/iomux.h>
15 #include <asm/arch/mx6-pins.h>
16 #include <asm/global_data.h>
17 #include <linux/delay.h>
18 #include <linux/errno.h>
20 #include <asm/mach-imx/iomux-v3.h>
21 #include <asm/mach-imx/sata.h>
22 #include <asm/arch/crm_regs.h>
24 #include <asm/arch/sys_proto.h>
29 DECLARE_GLOBAL_DATA_PTR;
31 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
32 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
33 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
35 #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
36 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
38 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
39 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
40 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
42 #define WDT_EN IMX_GPIO_NR(5, 4)
43 #define WDT_TRG IMX_GPIO_NR(3, 19)
47 gd->ram_size = imx_ddr_size();
52 static iomux_v3_cfg_t const uart2_pads[] = {
53 IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
54 IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
57 static iomux_v3_cfg_t const wdog_pads[] = {
58 IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)),
59 IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19),
62 int mx6_rgmii_rework(struct phy_device *phydev)
65 * Bug: Apparently uDoo does not works with Gigabit switches...
66 * Limiting speed to 10/100Mbps, and setting master mode, seems to
67 * be the only way to have a successfull PHY auto negotiation.
68 * How to fix: Understand why Linux kernel do not have this issue.
70 phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00);
72 /* control data pad skew - devaddr = 0x02, register = 0x04 */
73 ksz9031_phy_extended_write(phydev, 0x02,
74 MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
75 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
76 /* rx data pad skew - devaddr = 0x02, register = 0x05 */
77 ksz9031_phy_extended_write(phydev, 0x02,
78 MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
79 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
80 /* tx data pad skew - devaddr = 0x02, register = 0x05 */
81 ksz9031_phy_extended_write(phydev, 0x02,
82 MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
83 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
84 /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */
85 ksz9031_phy_extended_write(phydev, 0x02,
86 MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
87 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF);
91 static void setup_iomux_enet(void)
93 gpio_request(IMX_GPIO_NR(2, 31), "eth_power");
94 gpio_request(IMX_GPIO_NR(3, 23), "eth_phy_reset");
95 gpio_request(IMX_GPIO_NR(6, 24), "strap1");
96 gpio_request(IMX_GPIO_NR(6, 25), "strap2");
97 gpio_request(IMX_GPIO_NR(6, 27), "strap3");
98 gpio_request(IMX_GPIO_NR(6, 28), "strap4");
99 gpio_request(IMX_GPIO_NR(6, 29), "strap5");
101 gpio_direction_output(IMX_GPIO_NR(2, 31), 1); /* Power supply on */
103 gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* assert PHY rst */
105 gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
106 gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
107 gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
108 gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
109 gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
112 gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* deassert PHY rst */
114 /* Need 100ms delay to exit from reset. */
117 gpio_free(IMX_GPIO_NR(6, 24));
118 gpio_free(IMX_GPIO_NR(6, 25));
119 gpio_free(IMX_GPIO_NR(6, 27));
120 gpio_free(IMX_GPIO_NR(6, 28));
121 gpio_free(IMX_GPIO_NR(6, 29));
124 static void setup_iomux_uart(void)
126 SETUP_IOMUX_PADS(uart2_pads);
129 static void setup_iomux_wdog(void)
131 SETUP_IOMUX_PADS(wdog_pads);
132 gpio_direction_output(WDT_TRG, 0);
133 gpio_direction_output(WDT_EN, 1);
134 gpio_direction_input(WDT_TRG);
137 int board_early_init_f(void)
145 int board_phy_config(struct phy_device *phydev)
147 mx6_rgmii_rework(phydev);
148 if (phydev->drv->config)
149 phydev->drv->config(phydev);
156 /* address of boot parameters */
157 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
162 int board_late_init(void)
164 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
165 if (is_cpu_type(MXC_CPU_MX6Q))
166 env_set("board_rev", "MX6Q");
168 env_set("board_rev", "MX6DL");
177 if (is_cpu_type(MXC_CPU_MX6Q))
178 puts("Board: Udoo Quad\n");
180 puts("Board: Udoo DualLite\n");