blob: a359626b818a727d3e83ecf61c3d428afac02e5d [file] [log] [blame]
Fabio Estevam0c5e2662013-09-26 22:59:25 -03001/*
2 * Copyright (C) 2013 Freescale Semiconductor, Inc.
3 *
4 * Author: Fabio Estevam <fabio.estevam@freescale.com>
5 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
9#include <asm/arch/clock.h>
10#include <asm/arch/imx-regs.h>
11#include <asm/arch/iomux.h>
Giuseppe Pagano078813d2013-11-15 17:42:51 +010012#include <malloc.h>
Fabio Estevam0c5e2662013-09-26 22:59:25 -030013#include <asm/arch/mx6-pins.h>
Masahiro Yamada1221ce42016-09-21 11:28:55 +090014#include <linux/errno.h>
Fabio Estevam0c5e2662013-09-26 22:59:25 -030015#include <asm/gpio.h>
Stefano Babic552a8482017-06-29 10:16:06 +020016#include <asm/mach-imx/iomux-v3.h>
17#include <asm/mach-imx/sata.h>
Fabio Estevam0c5e2662013-09-26 22:59:25 -030018#include <mmc.h>
19#include <fsl_esdhc.h>
20#include <asm/arch/crm_regs.h>
21#include <asm/io.h>
22#include <asm/arch/sys_proto.h>
Giuseppe Pagano078813d2013-11-15 17:42:51 +010023#include <micrel.h>
24#include <miiphy.h>
25#include <netdev.h>
Fabio Estevam0c5e2662013-09-26 22:59:25 -030026
27DECLARE_GLOBAL_DATA_PTR;
28
29#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
30 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
31 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
32
Giuseppe Pagano078813d2013-11-15 17:42:51 +010033#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
34 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
35
Fabio Estevam0c5e2662013-09-26 22:59:25 -030036#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
37 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
38 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
39
40#define WDT_EN IMX_GPIO_NR(5, 4)
41#define WDT_TRG IMX_GPIO_NR(3, 19)
42
43int dram_init(void)
44{
vpeter478506c22015-08-03 12:49:05 +020045 gd->ram_size = imx_ddr_size();
Fabio Estevam0c5e2662013-09-26 22:59:25 -030046
47 return 0;
48}
49
50static iomux_v3_cfg_t const uart2_pads[] = {
vpeter478506c22015-08-03 12:49:05 +020051 IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
52 IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
Fabio Estevam0c5e2662013-09-26 22:59:25 -030053};
54
55static iomux_v3_cfg_t const usdhc3_pads[] = {
vpeter478506c22015-08-03 12:49:05 +020056 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
57 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
58 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
59 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
60 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
61 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
Fabio Estevam0c5e2662013-09-26 22:59:25 -030062};
63
64static iomux_v3_cfg_t const wdog_pads[] = {
vpeter478506c22015-08-03 12:49:05 +020065 IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)),
66 IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19),
Fabio Estevam0c5e2662013-09-26 22:59:25 -030067};
68
Giuseppe Pagano078813d2013-11-15 17:42:51 +010069int mx6_rgmii_rework(struct phy_device *phydev)
70{
71 /*
72 * Bug: Apparently uDoo does not works with Gigabit switches...
73 * Limiting speed to 10/100Mbps, and setting master mode, seems to
74 * be the only way to have a successfull PHY auto negotiation.
75 * How to fix: Understand why Linux kernel do not have this issue.
76 */
77 phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00);
78
79 /* control data pad skew - devaddr = 0x02, register = 0x04 */
80 ksz9031_phy_extended_write(phydev, 0x02,
81 MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
82 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
83 /* rx data pad skew - devaddr = 0x02, register = 0x05 */
84 ksz9031_phy_extended_write(phydev, 0x02,
85 MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
86 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
87 /* tx data pad skew - devaddr = 0x02, register = 0x05 */
88 ksz9031_phy_extended_write(phydev, 0x02,
89 MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
90 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
91 /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */
92 ksz9031_phy_extended_write(phydev, 0x02,
93 MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
94 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF);
95 return 0;
96}
97
98static iomux_v3_cfg_t const enet_pads1[] = {
vpeter478506c22015-08-03 12:49:05 +020099 IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
100 IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
101 IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
102 IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
103 IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
104 IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
105 IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
106 IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
107 IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL)),
108 IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100109 /* RGMII reset */
vpeter478506c22015-08-03 12:49:05 +0200110 IOMUX_PADS(PAD_EIM_D23__GPIO3_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100111 /* Ethernet power supply */
vpeter478506c22015-08-03 12:49:05 +0200112 IOMUX_PADS(PAD_EIM_EB3__GPIO2_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100113 /* pin 32 - 1 - (MODE0) all */
vpeter478506c22015-08-03 12:49:05 +0200114 IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100115 /* pin 31 - 1 - (MODE1) all */
vpeter478506c22015-08-03 12:49:05 +0200116 IOMUX_PADS(PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100117 /* pin 28 - 1 - (MODE2) all */
vpeter478506c22015-08-03 12:49:05 +0200118 IOMUX_PADS(PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100119 /* pin 27 - 1 - (MODE3) all */
vpeter478506c22015-08-03 12:49:05 +0200120 IOMUX_PADS(PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100121 /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
vpeter478506c22015-08-03 12:49:05 +0200122 IOMUX_PADS(PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100123};
124
125static iomux_v3_cfg_t const enet_pads2[] = {
vpeter478506c22015-08-03 12:49:05 +0200126 IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
127 IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
128 IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
129 IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
130 IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100131};
132
133static void setup_iomux_enet(void)
134{
vpeter478506c22015-08-03 12:49:05 +0200135 SETUP_IOMUX_PADS(enet_pads1);
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100136 udelay(20);
137 gpio_direction_output(IMX_GPIO_NR(2, 31), 1); /* Power supply on */
138
139 gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* assert PHY rst */
140
141 gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
142 gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
143 gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
144 gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
145 gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
146 udelay(1000);
147
148 gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* deassert PHY rst */
149
150 /* Need 100ms delay to exit from reset. */
151 udelay(1000 * 100);
152
153 gpio_free(IMX_GPIO_NR(6, 24));
154 gpio_free(IMX_GPIO_NR(6, 25));
155 gpio_free(IMX_GPIO_NR(6, 27));
156 gpio_free(IMX_GPIO_NR(6, 28));
157 gpio_free(IMX_GPIO_NR(6, 29));
158
vpeter478506c22015-08-03 12:49:05 +0200159 SETUP_IOMUX_PADS(enet_pads2);
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100160}
161
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300162static void setup_iomux_uart(void)
163{
vpeter478506c22015-08-03 12:49:05 +0200164 SETUP_IOMUX_PADS(uart2_pads);
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300165}
166
167static void setup_iomux_wdog(void)
168{
vpeter478506c22015-08-03 12:49:05 +0200169 SETUP_IOMUX_PADS(wdog_pads);
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300170 gpio_direction_output(WDT_TRG, 0);
171 gpio_direction_output(WDT_EN, 1);
Giuseppe Paganodb6801d2013-11-15 17:42:54 +0100172 gpio_direction_input(WDT_TRG);
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300173}
174
175static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR };
176
177int board_mmc_getcd(struct mmc *mmc)
178{
179 return 1; /* Always present */
180}
181
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100182int board_eth_init(bd_t *bis)
183{
184 uint32_t base = IMX_FEC_BASE;
185 struct mii_dev *bus = NULL;
186 struct phy_device *phydev = NULL;
187 int ret;
188
189 setup_iomux_enet();
190
191#ifdef CONFIG_FEC_MXC
192 bus = fec_get_miibus(base, -1);
193 if (!bus)
Fabio Estevam84c311f2015-09-11 13:32:50 -0300194 return -EINVAL;
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100195 /* scan phy 4,5,6,7 */
196 phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
197
198 if (!phydev) {
Fabio Estevam84c311f2015-09-11 13:32:50 -0300199 ret = -EINVAL;
200 goto free_bus;
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100201 }
202 printf("using phy at %d\n", phydev->addr);
203 ret = fec_probe(bis, -1, base, bus, phydev);
Fabio Estevam84c311f2015-09-11 13:32:50 -0300204 if (ret)
205 goto free_phydev;
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100206#endif
207 return 0;
Fabio Estevam84c311f2015-09-11 13:32:50 -0300208
209free_phydev:
210 free(phydev);
211free_bus:
212 free(bus);
213 return ret;
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100214}
215
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300216int board_mmc_init(bd_t *bis)
217{
vpeter478506c22015-08-03 12:49:05 +0200218 SETUP_IOMUX_PADS(usdhc3_pads);
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300219 usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
220 usdhc_cfg.max_bus_width = 4;
221
222 return fsl_esdhc_initialize(bis, &usdhc_cfg);
223}
224
225int board_early_init_f(void)
226{
227 setup_iomux_wdog();
228 setup_iomux_uart();
229
230 return 0;
231}
232
Giuseppe Pagano078813d2013-11-15 17:42:51 +0100233int board_phy_config(struct phy_device *phydev)
234{
235 mx6_rgmii_rework(phydev);
236 if (phydev->drv->config)
237 phydev->drv->config(phydev);
238
239 return 0;
240}
241
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300242int board_init(void)
243{
244 /* address of boot parameters */
245 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
246
Simon Glass10e40d52017-06-14 21:28:25 -0600247#ifdef CONFIG_SATA
vpeter478506c22015-08-03 12:49:05 +0200248 if (is_cpu_type(MXC_CPU_MX6Q))
249 setup_sata();
250#endif
251 return 0;
252}
253
254int board_late_init(void)
255{
256#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
257 if (is_cpu_type(MXC_CPU_MX6Q))
Simon Glass382bee52017-08-03 12:22:09 -0600258 env_set("board_rev", "MX6Q");
vpeter478506c22015-08-03 12:49:05 +0200259 else
Simon Glass382bee52017-08-03 12:22:09 -0600260 env_set("board_rev", "MX6DL");
Giuseppe Pagano98d01222013-11-28 12:32:49 +0100261#endif
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300262 return 0;
263}
264
265int checkboard(void)
266{
vpeter478506c22015-08-03 12:49:05 +0200267 if (is_cpu_type(MXC_CPU_MX6Q))
268 puts("Board: Udoo Quad\n");
269 else
270 puts("Board: Udoo DualLite\n");
Fabio Estevam0c5e2662013-09-26 22:59:25 -0300271
272 return 0;
273}