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1 | /* | |
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> | |
12 | #include <malloc.h> | |
13 | #include <asm/arch/mx6-pins.h> | |
14 | #include <linux/errno.h> | |
15 | #include <asm/gpio.h> | |
16 | #include <asm/imx-common/iomux-v3.h> | |
17 | #include <asm/imx-common/sata.h> | |
18 | #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> | |
23 | #include <micrel.h> | |
24 | #include <miiphy.h> | |
25 | #include <netdev.h> | |
26 | ||
27 | DECLARE_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 | ||
33 | #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ | |
34 | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) | |
35 | ||
36 | #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 | ||
43 | int dram_init(void) | |
44 | { | |
45 | gd->ram_size = imx_ddr_size(); | |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
50 | static iomux_v3_cfg_t const uart2_pads[] = { | |
51 | 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)), | |
53 | }; | |
54 | ||
55 | static iomux_v3_cfg_t const usdhc3_pads[] = { | |
56 | 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)), | |
62 | }; | |
63 | ||
64 | static iomux_v3_cfg_t const wdog_pads[] = { | |
65 | IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
66 | IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19), | |
67 | }; | |
68 | ||
69 | int 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 | ||
98 | static iomux_v3_cfg_t const enet_pads1[] = { | |
99 | 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)), | |
109 | /* RGMII reset */ | |
110 | IOMUX_PADS(PAD_EIM_D23__GPIO3_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
111 | /* Ethernet power supply */ | |
112 | IOMUX_PADS(PAD_EIM_EB3__GPIO2_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
113 | /* pin 32 - 1 - (MODE0) all */ | |
114 | IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
115 | /* pin 31 - 1 - (MODE1) all */ | |
116 | IOMUX_PADS(PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
117 | /* pin 28 - 1 - (MODE2) all */ | |
118 | IOMUX_PADS(PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
119 | /* pin 27 - 1 - (MODE3) all */ | |
120 | IOMUX_PADS(PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
121 | /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */ | |
122 | IOMUX_PADS(PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL)), | |
123 | }; | |
124 | ||
125 | static iomux_v3_cfg_t const enet_pads2[] = { | |
126 | 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)), | |
131 | }; | |
132 | ||
133 | static void setup_iomux_enet(void) | |
134 | { | |
135 | SETUP_IOMUX_PADS(enet_pads1); | |
136 | 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 | ||
159 | SETUP_IOMUX_PADS(enet_pads2); | |
160 | } | |
161 | ||
162 | static void setup_iomux_uart(void) | |
163 | { | |
164 | SETUP_IOMUX_PADS(uart2_pads); | |
165 | } | |
166 | ||
167 | static void setup_iomux_wdog(void) | |
168 | { | |
169 | SETUP_IOMUX_PADS(wdog_pads); | |
170 | gpio_direction_output(WDT_TRG, 0); | |
171 | gpio_direction_output(WDT_EN, 1); | |
172 | gpio_direction_input(WDT_TRG); | |
173 | } | |
174 | ||
175 | static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR }; | |
176 | ||
177 | int board_mmc_getcd(struct mmc *mmc) | |
178 | { | |
179 | return 1; /* Always present */ | |
180 | } | |
181 | ||
182 | int 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) | |
194 | return -EINVAL; | |
195 | /* scan phy 4,5,6,7 */ | |
196 | phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII); | |
197 | ||
198 | if (!phydev) { | |
199 | ret = -EINVAL; | |
200 | goto free_bus; | |
201 | } | |
202 | printf("using phy at %d\n", phydev->addr); | |
203 | ret = fec_probe(bis, -1, base, bus, phydev); | |
204 | if (ret) | |
205 | goto free_phydev; | |
206 | #endif | |
207 | return 0; | |
208 | ||
209 | free_phydev: | |
210 | free(phydev); | |
211 | free_bus: | |
212 | free(bus); | |
213 | return ret; | |
214 | } | |
215 | ||
216 | int board_mmc_init(bd_t *bis) | |
217 | { | |
218 | SETUP_IOMUX_PADS(usdhc3_pads); | |
219 | 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 | ||
225 | int board_early_init_f(void) | |
226 | { | |
227 | setup_iomux_wdog(); | |
228 | setup_iomux_uart(); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | int 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 | ||
242 | int board_init(void) | |
243 | { | |
244 | /* address of boot parameters */ | |
245 | gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; | |
246 | ||
247 | #ifdef CONFIG_SATA | |
248 | if (is_cpu_type(MXC_CPU_MX6Q)) | |
249 | setup_sata(); | |
250 | #endif | |
251 | return 0; | |
252 | } | |
253 | ||
254 | int board_late_init(void) | |
255 | { | |
256 | #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG | |
257 | if (is_cpu_type(MXC_CPU_MX6Q)) | |
258 | setenv("board_rev", "MX6Q"); | |
259 | else | |
260 | setenv("board_rev", "MX6DL"); | |
261 | #endif | |
262 | return 0; | |
263 | } | |
264 | ||
265 | int checkboard(void) | |
266 | { | |
267 | if (is_cpu_type(MXC_CPU_MX6Q)) | |
268 | puts("Board: Udoo Quad\n"); | |
269 | else | |
270 | puts("Board: Udoo DualLite\n"); | |
271 | ||
272 | return 0; | |
273 | } |