1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2013 Freescale Semiconductor, Inc.
5 * Author: Fabio Estevam <fabio.estevam@freescale.com>
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 <linux/delay.h>
17 #include <linux/errno.h>
19 #include <asm/mach-imx/iomux-v3.h>
20 #include <asm/mach-imx/sata.h>
22 #include <fsl_esdhc_imx.h>
23 #include <asm/arch/crm_regs.h>
25 #include <asm/arch/sys_proto.h>
30 DECLARE_GLOBAL_DATA_PTR;
32 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
33 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
34 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
36 #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
37 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
39 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
40 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
41 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
43 #define WDT_EN IMX_GPIO_NR(5, 4)
44 #define WDT_TRG IMX_GPIO_NR(3, 19)
48 gd->ram_size = imx_ddr_size();
53 static iomux_v3_cfg_t const uart2_pads[] = {
54 IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
55 IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
58 static iomux_v3_cfg_t const usdhc3_pads[] = {
59 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
60 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
61 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
62 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
63 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
64 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
67 static iomux_v3_cfg_t const wdog_pads[] = {
68 IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)),
69 IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19),
72 int mx6_rgmii_rework(struct phy_device *phydev)
75 * Bug: Apparently uDoo does not works with Gigabit switches...
76 * Limiting speed to 10/100Mbps, and setting master mode, seems to
77 * be the only way to have a successfull PHY auto negotiation.
78 * How to fix: Understand why Linux kernel do not have this issue.
80 phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00);
82 /* control data pad skew - devaddr = 0x02, register = 0x04 */
83 ksz9031_phy_extended_write(phydev, 0x02,
84 MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
85 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
86 /* rx data pad skew - devaddr = 0x02, register = 0x05 */
87 ksz9031_phy_extended_write(phydev, 0x02,
88 MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
89 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
90 /* tx data pad skew - devaddr = 0x02, register = 0x05 */
91 ksz9031_phy_extended_write(phydev, 0x02,
92 MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
93 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
94 /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */
95 ksz9031_phy_extended_write(phydev, 0x02,
96 MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
97 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF);
101 static iomux_v3_cfg_t const enet_pads1[] = {
102 IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
103 IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
104 IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
105 IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
106 IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
107 IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
108 IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
109 IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
110 IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL)),
111 IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
113 IOMUX_PADS(PAD_EIM_D23__GPIO3_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL)),
114 /* Ethernet power supply */
115 IOMUX_PADS(PAD_EIM_EB3__GPIO2_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)),
116 /* pin 32 - 1 - (MODE0) all */
117 IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL)),
118 /* pin 31 - 1 - (MODE1) all */
119 IOMUX_PADS(PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL)),
120 /* pin 28 - 1 - (MODE2) all */
121 IOMUX_PADS(PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL)),
122 /* pin 27 - 1 - (MODE3) all */
123 IOMUX_PADS(PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL)),
124 /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
125 IOMUX_PADS(PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL)),
128 static iomux_v3_cfg_t const enet_pads2[] = {
129 IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
130 IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
131 IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
132 IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
133 IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
136 static void setup_iomux_enet(void)
138 SETUP_IOMUX_PADS(enet_pads1);
140 gpio_direction_output(IMX_GPIO_NR(2, 31), 1); /* Power supply on */
142 gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* assert PHY rst */
144 gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
145 gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
146 gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
147 gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
148 gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
151 gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* deassert PHY rst */
153 /* Need 100ms delay to exit from reset. */
156 gpio_free(IMX_GPIO_NR(6, 24));
157 gpio_free(IMX_GPIO_NR(6, 25));
158 gpio_free(IMX_GPIO_NR(6, 27));
159 gpio_free(IMX_GPIO_NR(6, 28));
160 gpio_free(IMX_GPIO_NR(6, 29));
162 SETUP_IOMUX_PADS(enet_pads2);
165 static void setup_iomux_uart(void)
167 SETUP_IOMUX_PADS(uart2_pads);
170 static void setup_iomux_wdog(void)
172 SETUP_IOMUX_PADS(wdog_pads);
173 gpio_direction_output(WDT_TRG, 0);
174 gpio_direction_output(WDT_EN, 1);
175 gpio_direction_input(WDT_TRG);
178 static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR };
180 int board_mmc_getcd(struct mmc *mmc)
182 return 1; /* Always present */
185 int board_eth_init(bd_t *bis)
187 uint32_t base = IMX_FEC_BASE;
188 struct mii_dev *bus = NULL;
189 struct phy_device *phydev = NULL;
194 #ifdef CONFIG_FEC_MXC
195 bus = fec_get_miibus(base, -1);
198 /* scan phy 4,5,6,7 */
199 phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
205 printf("using phy at %d\n", phydev->addr);
206 ret = fec_probe(bis, -1, base, bus, phydev);
219 int board_mmc_init(bd_t *bis)
221 SETUP_IOMUX_PADS(usdhc3_pads);
222 usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
223 usdhc_cfg.max_bus_width = 4;
225 return fsl_esdhc_initialize(bis, &usdhc_cfg);
228 int board_early_init_f(void)
236 int board_phy_config(struct phy_device *phydev)
238 mx6_rgmii_rework(phydev);
239 if (phydev->drv->config)
240 phydev->drv->config(phydev);
247 /* address of boot parameters */
248 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
256 int board_late_init(void)
258 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
259 if (is_cpu_type(MXC_CPU_MX6Q))
260 env_set("board_rev", "MX6Q");
262 env_set("board_rev", "MX6DL");
269 if (is_cpu_type(MXC_CPU_MX6Q))
270 puts("Board: Udoo Quad\n");
272 puts("Board: Udoo DualLite\n");