1 /*
2  * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
3  * Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <common.h>
9 #include <asm/io.h>
10 #include <asm/arch/clock.h>
11 #include <asm/arch/imx-regs.h>
12 #include <asm/arch/iomux.h>
13 #include <asm/arch/sys_proto.h>
14 #include <malloc.h>
15 #include <asm/arch/mx6-pins.h>
16 #include <linux/errno.h>
17 #include <asm/gpio.h>
18 #include <asm/mach-imx/iomux-v3.h>
19 #include <asm/mach-imx/mxc_i2c.h>
20 #include <asm/mach-imx/sata.h>
21 #include <asm/mach-imx/spi.h>
22 #include <asm/mach-imx/boot_mode.h>
23 #include <asm/mach-imx/video.h>
24 #include <mmc.h>
25 #include <fsl_esdhc.h>
26 #include <micrel.h>
27 #include <miiphy.h>
28 #include <netdev.h>
29 #include <asm/arch/crm_regs.h>
30 #include <asm/arch/mxc_hdmi.h>
31 #include <i2c.h>
32 #include <input.h>
33 #include <netdev.h>
34 #include <usb/ehci-ci.h>
35 
36 DECLARE_GLOBAL_DATA_PTR;
37 #define GP_USB_OTG_PWR	IMX_GPIO_NR(3, 22)
38 
39 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
40 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
41 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
42 
43 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
44 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
45 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
46 
47 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
48 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
49 
50 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED |		\
51 	PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)
52 
53 #define BUTTON_PAD_CTRL (PAD_CTL_PUS_100K_UP |			\
54 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
55 
56 #define I2C_PAD_CTRL	(PAD_CTL_PUS_100K_UP |			\
57 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
58 	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
59 
60 #define WEAK_PULLUP	(PAD_CTL_PUS_100K_UP |			\
61 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
62 	PAD_CTL_SRE_SLOW)
63 
64 #define WEAK_PULLDOWN	(PAD_CTL_PUS_100K_DOWN |		\
65 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
66 	PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
67 
68 #define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
69 
70 int dram_init(void)
71 {
72 	gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);
73 
74 	return 0;
75 }
76 
77 static iomux_v3_cfg_t const uart1_pads[] = {
78 	MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
79 	MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
80 };
81 
82 static iomux_v3_cfg_t const uart2_pads[] = {
83 	MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
84 	MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
85 };
86 
87 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
88 
89 /* I2C1, SGTL5000 */
90 static struct i2c_pads_info i2c_pad_info0 = {
91 	.scl = {
92 		.i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
93 		.gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
94 		.gp = IMX_GPIO_NR(3, 21)
95 	},
96 	.sda = {
97 		.i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC,
98 		.gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC,
99 		.gp = IMX_GPIO_NR(3, 28)
100 	}
101 };
102 
103 /* I2C2 Camera, MIPI */
104 static struct i2c_pads_info i2c_pad_info1 = {
105 	.scl = {
106 		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
107 		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
108 		.gp = IMX_GPIO_NR(4, 12)
109 	},
110 	.sda = {
111 		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
112 		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
113 		.gp = IMX_GPIO_NR(4, 13)
114 	}
115 };
116 
117 /* I2C3, J15 - RGB connector */
118 static struct i2c_pads_info i2c_pad_info2 = {
119 	.scl = {
120 		.i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
121 		.gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
122 		.gp = IMX_GPIO_NR(1, 5)
123 	},
124 	.sda = {
125 		.i2c_mode = MX6_PAD_GPIO_16__I2C3_SDA | PC,
126 		.gpio_mode = MX6_PAD_GPIO_16__GPIO7_IO11 | PC,
127 		.gp = IMX_GPIO_NR(7, 11)
128 	}
129 };
130 
131 static iomux_v3_cfg_t const usdhc2_pads[] = {
132 	MX6_PAD_SD2_CLK__SD2_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
133 	MX6_PAD_SD2_CMD__SD2_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
134 	MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
135 	MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
136 	MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
137 	MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
138 };
139 
140 static iomux_v3_cfg_t const usdhc3_pads[] = {
141 	MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
142 	MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
143 	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
144 	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
145 	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
146 	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
147 	MX6_PAD_SD3_DAT5__GPIO7_IO00    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
148 };
149 
150 static iomux_v3_cfg_t const usdhc4_pads[] = {
151 	MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
152 	MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
153 	MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
154 	MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
155 	MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
156 	MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
157 	MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
158 };
159 
160 static iomux_v3_cfg_t const enet_pads1[] = {
161 	MX6_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
162 	MX6_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
163 	MX6_PAD_RGMII_TXC__RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
164 	MX6_PAD_RGMII_TD0__RGMII_TD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
165 	MX6_PAD_RGMII_TD1__RGMII_TD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
166 	MX6_PAD_RGMII_TD2__RGMII_TD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
167 	MX6_PAD_RGMII_TD3__RGMII_TD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
168 	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
169 	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
170 	/* pin 35 - 1 (PHY_AD2) on reset */
171 	MX6_PAD_RGMII_RXC__GPIO6_IO30		| MUX_PAD_CTRL(NO_PAD_CTRL),
172 	/* pin 32 - 1 - (MODE0) all */
173 	MX6_PAD_RGMII_RD0__GPIO6_IO25		| MUX_PAD_CTRL(NO_PAD_CTRL),
174 	/* pin 31 - 1 - (MODE1) all */
175 	MX6_PAD_RGMII_RD1__GPIO6_IO27		| MUX_PAD_CTRL(NO_PAD_CTRL),
176 	/* pin 28 - 1 - (MODE2) all */
177 	MX6_PAD_RGMII_RD2__GPIO6_IO28		| MUX_PAD_CTRL(NO_PAD_CTRL),
178 	/* pin 27 - 1 - (MODE3) all */
179 	MX6_PAD_RGMII_RD3__GPIO6_IO29		| MUX_PAD_CTRL(NO_PAD_CTRL),
180 	/* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
181 	MX6_PAD_RGMII_RX_CTL__GPIO6_IO24	| MUX_PAD_CTRL(NO_PAD_CTRL),
182 	/* pin 42 PHY nRST */
183 	MX6_PAD_EIM_D23__GPIO3_IO23		| MUX_PAD_CTRL(NO_PAD_CTRL),
184 	MX6_PAD_ENET_RXD0__GPIO1_IO27		| MUX_PAD_CTRL(NO_PAD_CTRL),
185 };
186 
187 static iomux_v3_cfg_t const enet_pads2[] = {
188 	MX6_PAD_RGMII_RXC__RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
189 	MX6_PAD_RGMII_RD0__RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
190 	MX6_PAD_RGMII_RD1__RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
191 	MX6_PAD_RGMII_RD2__RGMII_RD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
192 	MX6_PAD_RGMII_RD3__RGMII_RD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
193 	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
194 };
195 
196 static iomux_v3_cfg_t const misc_pads[] = {
197 	MX6_PAD_GPIO_1__USB_OTG_ID		| MUX_PAD_CTRL(WEAK_PULLUP),
198 	MX6_PAD_KEY_COL4__USB_OTG_OC		| MUX_PAD_CTRL(WEAK_PULLUP),
199 	MX6_PAD_EIM_D30__USB_H1_OC		| MUX_PAD_CTRL(WEAK_PULLUP),
200 	/* OTG Power enable */
201 	MX6_PAD_EIM_D22__GPIO3_IO22		| MUX_PAD_CTRL(OUTPUT_40OHM),
202 };
203 
204 /* wl1271 pads on nitrogen6x */
205 static iomux_v3_cfg_t const wl12xx_pads[] = {
206 	(MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
207 		| MUX_PAD_CTRL(WEAK_PULLDOWN),
208 	(MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
209 		| MUX_PAD_CTRL(OUTPUT_40OHM),
210 	(MX6_PAD_NANDF_CS3__GPIO6_IO16 & ~MUX_PAD_CTRL_MASK)
211 		| MUX_PAD_CTRL(OUTPUT_40OHM),
212 };
213 #define WL12XX_WL_IRQ_GP	IMX_GPIO_NR(6, 14)
214 #define WL12XX_WL_ENABLE_GP	IMX_GPIO_NR(6, 15)
215 #define WL12XX_BT_ENABLE_GP	IMX_GPIO_NR(6, 16)
216 
217 /* Button assignments for J14 */
218 static iomux_v3_cfg_t const button_pads[] = {
219 	/* Menu */
220 	MX6_PAD_NANDF_D1__GPIO2_IO01	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
221 	/* Back */
222 	MX6_PAD_NANDF_D2__GPIO2_IO02	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
223 	/* Labelled Search (mapped to Power under Android) */
224 	MX6_PAD_NANDF_D3__GPIO2_IO03	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
225 	/* Home */
226 	MX6_PAD_NANDF_D4__GPIO2_IO04	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
227 	/* Volume Down */
228 	MX6_PAD_GPIO_19__GPIO4_IO05	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
229 	/* Volume Up */
230 	MX6_PAD_GPIO_18__GPIO7_IO13	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
231 };
232 
233 static void setup_iomux_enet(void)
234 {
235 	gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
236 	gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
237 	gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
238 	gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
239 	gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
240 	gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
241 	gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
242 	imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
243 	gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
244 
245 	/* Need delay 10ms according to KSZ9021 spec */
246 	udelay(1000 * 10);
247 	gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
248 	gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
249 
250 	imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
251 	udelay(100);	/* Wait 100 us before using mii interface */
252 }
253 
254 static iomux_v3_cfg_t const usb_pads[] = {
255 	MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
256 };
257 
258 static void setup_iomux_uart(void)
259 {
260 	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
261 	imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
262 }
263 
264 #ifdef CONFIG_USB_EHCI_MX6
265 int board_ehci_hcd_init(int port)
266 {
267 	imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
268 
269 	/* Reset USB hub */
270 	gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
271 	mdelay(2);
272 	gpio_set_value(IMX_GPIO_NR(7, 12), 1);
273 
274 	return 0;
275 }
276 
277 int board_ehci_power(int port, int on)
278 {
279 	if (port)
280 		return 0;
281 	gpio_set_value(GP_USB_OTG_PWR, on);
282 	return 0;
283 }
284 
285 #endif
286 
287 #ifdef CONFIG_FSL_ESDHC
288 static struct fsl_esdhc_cfg usdhc_cfg[2] = {
289 	{USDHC3_BASE_ADDR},
290 	{USDHC4_BASE_ADDR},
291 };
292 
293 int board_mmc_getcd(struct mmc *mmc)
294 {
295 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
296 	int gp_cd = (cfg->esdhc_base == USDHC3_BASE_ADDR) ? IMX_GPIO_NR(7, 0) :
297 			IMX_GPIO_NR(2, 6);
298 
299 	gpio_direction_input(gp_cd);
300 	return !gpio_get_value(gp_cd);
301 }
302 
303 int board_mmc_init(bd_t *bis)
304 {
305 	int ret;
306 	u32 index = 0;
307 
308 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
309 	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
310 
311 	usdhc_cfg[0].max_bus_width = 4;
312 	usdhc_cfg[1].max_bus_width = 4;
313 
314 	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
315 		switch (index) {
316 		case 0:
317 			imx_iomux_v3_setup_multiple_pads(
318 				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
319 			break;
320 		case 1:
321 		       imx_iomux_v3_setup_multiple_pads(
322 			       usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
323 		       break;
324 		default:
325 		       printf("Warning: you configured more USDHC controllers"
326 			       "(%d) then supported by the board (%d)\n",
327 			       index + 1, CONFIG_SYS_FSL_USDHC_NUM);
328 		       return -EINVAL;
329 		}
330 
331 		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
332 		if (ret)
333 			return ret;
334 	}
335 
336 	return 0;
337 }
338 #endif
339 
340 #ifdef CONFIG_MXC_SPI
341 int board_spi_cs_gpio(unsigned bus, unsigned cs)
342 {
343 	return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -1;
344 }
345 
346 static iomux_v3_cfg_t const ecspi1_pads[] = {
347 	/* SS1 */
348 	MX6_PAD_EIM_D19__GPIO3_IO19  | MUX_PAD_CTRL(NO_PAD_CTRL),
349 	MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
350 	MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
351 	MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
352 };
353 
354 static void setup_spi(void)
355 {
356 	imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
357 					 ARRAY_SIZE(ecspi1_pads));
358 }
359 #endif
360 
361 int board_phy_config(struct phy_device *phydev)
362 {
363 	/* min rx data delay */
364 	ksz9021_phy_extended_write(phydev,
365 			MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
366 	/* min tx data delay */
367 	ksz9021_phy_extended_write(phydev,
368 			MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
369 	/* max rx/tx clock delay, min rx/tx control */
370 	ksz9021_phy_extended_write(phydev,
371 			MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
372 	if (phydev->drv->config)
373 		phydev->drv->config(phydev);
374 
375 	return 0;
376 }
377 
378 int board_eth_init(bd_t *bis)
379 {
380 	uint32_t base = IMX_FEC_BASE;
381 	struct mii_dev *bus = NULL;
382 	struct phy_device *phydev = NULL;
383 	int ret;
384 
385 	setup_iomux_enet();
386 
387 #ifdef CONFIG_FEC_MXC
388 	bus = fec_get_miibus(base, -1);
389 	if (!bus)
390 		return -EINVAL;
391 	/* scan phy 4,5,6,7 */
392 	phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
393 	if (!phydev) {
394 		ret = -EINVAL;
395 		goto free_bus;
396 	}
397 	printf("using phy at %d\n", phydev->addr);
398 	ret  = fec_probe(bis, -1, base, bus, phydev);
399 	if (ret)
400 		goto free_phydev;
401 #endif
402 
403 #ifdef CONFIG_CI_UDC
404 	/* For otg ethernet*/
405 	usb_eth_initialize(bis);
406 #endif
407 	return 0;
408 
409 free_phydev:
410 	free(phydev);
411 free_bus:
412 	free(bus);
413 	return ret;
414 }
415 
416 static void setup_buttons(void)
417 {
418 	imx_iomux_v3_setup_multiple_pads(button_pads,
419 					 ARRAY_SIZE(button_pads));
420 }
421 
422 #if defined(CONFIG_VIDEO_IPUV3)
423 
424 static iomux_v3_cfg_t const backlight_pads[] = {
425 	/* Backlight on RGB connector: J15 */
426 	MX6_PAD_SD1_DAT3__GPIO1_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
427 #define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
428 
429 	/* Backlight on LVDS connector: J6 */
430 	MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
431 #define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
432 };
433 
434 static iomux_v3_cfg_t const rgb_pads[] = {
435 	MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
436 	MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
437 	MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
438 	MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
439 	MX6_PAD_DI0_PIN4__GPIO4_IO20,
440 	MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
441 	MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
442 	MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
443 	MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
444 	MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
445 	MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
446 	MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
447 	MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
448 	MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
449 	MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
450 	MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
451 	MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
452 	MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
453 	MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
454 	MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
455 	MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
456 	MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
457 	MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
458 	MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
459 	MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
460 	MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
461 	MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
462 	MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
463 	MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
464 };
465 
466 static void do_enable_hdmi(struct display_info_t const *dev)
467 {
468 	imx_enable_hdmi_phy();
469 }
470 
471 static int detect_i2c(struct display_info_t const *dev)
472 {
473 	return ((0 == i2c_set_bus_num(dev->bus))
474 		&&
475 		(0 == i2c_probe(dev->addr)));
476 }
477 
478 static void enable_lvds(struct display_info_t const *dev)
479 {
480 	struct iomuxc *iomux = (struct iomuxc *)
481 				IOMUXC_BASE_ADDR;
482 	u32 reg = readl(&iomux->gpr[2]);
483 	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
484 	writel(reg, &iomux->gpr[2]);
485 	gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
486 }
487 
488 static void enable_lvds_jeida(struct display_info_t const *dev)
489 {
490 	struct iomuxc *iomux = (struct iomuxc *)
491 				IOMUXC_BASE_ADDR;
492 	u32 reg = readl(&iomux->gpr[2]);
493 	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
494 	     |IOMUXC_GPR2_BIT_MAPPING_CH0_JEIDA;
495 	writel(reg, &iomux->gpr[2]);
496 	gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
497 }
498 
499 static void enable_rgb(struct display_info_t const *dev)
500 {
501 	imx_iomux_v3_setup_multiple_pads(
502 		rgb_pads,
503 		 ARRAY_SIZE(rgb_pads));
504 	gpio_direction_output(RGB_BACKLIGHT_GP, 1);
505 }
506 
507 struct display_info_t const displays[] = {{
508 	.bus	= 1,
509 	.addr	= 0x50,
510 	.pixfmt	= IPU_PIX_FMT_RGB24,
511 	.detect	= detect_i2c,
512 	.enable	= do_enable_hdmi,
513 	.mode	= {
514 		.name           = "HDMI",
515 		.refresh        = 60,
516 		.xres           = 1024,
517 		.yres           = 768,
518 		.pixclock       = 15385,
519 		.left_margin    = 220,
520 		.right_margin   = 40,
521 		.upper_margin   = 21,
522 		.lower_margin   = 7,
523 		.hsync_len      = 60,
524 		.vsync_len      = 10,
525 		.sync           = FB_SYNC_EXT,
526 		.vmode          = FB_VMODE_NONINTERLACED
527 } }, {
528 	.bus	= 0,
529 	.addr	= 0,
530 	.pixfmt	= IPU_PIX_FMT_RGB24,
531 	.detect	= NULL,
532 	.enable	= enable_lvds_jeida,
533 	.mode	= {
534 		.name           = "LDB-WXGA",
535 		.refresh        = 60,
536 		.xres           = 1280,
537 		.yres           = 800,
538 		.pixclock       = 14065,
539 		.left_margin    = 40,
540 		.right_margin   = 40,
541 		.upper_margin   = 3,
542 		.lower_margin   = 80,
543 		.hsync_len      = 10,
544 		.vsync_len      = 10,
545 		.sync           = FB_SYNC_EXT,
546 		.vmode          = FB_VMODE_NONINTERLACED
547 } }, {
548 	.bus	= 0,
549 	.addr	= 0,
550 	.pixfmt	= IPU_PIX_FMT_RGB24,
551 	.detect	= NULL,
552 	.enable	= enable_lvds,
553 	.mode	= {
554 		.name           = "LDB-WXGA-S",
555 		.refresh        = 60,
556 		.xres           = 1280,
557 		.yres           = 800,
558 		.pixclock       = 14065,
559 		.left_margin    = 40,
560 		.right_margin   = 40,
561 		.upper_margin   = 3,
562 		.lower_margin   = 80,
563 		.hsync_len      = 10,
564 		.vsync_len      = 10,
565 		.sync           = FB_SYNC_EXT,
566 		.vmode          = FB_VMODE_NONINTERLACED
567 } }, {
568 	.bus	= 2,
569 	.addr	= 0x4,
570 	.pixfmt	= IPU_PIX_FMT_LVDS666,
571 	.detect	= detect_i2c,
572 	.enable	= enable_lvds,
573 	.mode	= {
574 		.name           = "Hannstar-XGA",
575 		.refresh        = 60,
576 		.xres           = 1024,
577 		.yres           = 768,
578 		.pixclock       = 15385,
579 		.left_margin    = 220,
580 		.right_margin   = 40,
581 		.upper_margin   = 21,
582 		.lower_margin   = 7,
583 		.hsync_len      = 60,
584 		.vsync_len      = 10,
585 		.sync           = FB_SYNC_EXT,
586 		.vmode          = FB_VMODE_NONINTERLACED
587 } }, {
588 	.bus	= 0,
589 	.addr	= 0,
590 	.pixfmt	= IPU_PIX_FMT_LVDS666,
591 	.detect	= NULL,
592 	.enable	= enable_lvds,
593 	.mode	= {
594 		.name           = "LG-9.7",
595 		.refresh        = 60,
596 		.xres           = 1024,
597 		.yres           = 768,
598 		.pixclock       = 15385, /* ~65MHz */
599 		.left_margin    = 480,
600 		.right_margin   = 260,
601 		.upper_margin   = 16,
602 		.lower_margin   = 6,
603 		.hsync_len      = 250,
604 		.vsync_len      = 10,
605 		.sync           = FB_SYNC_EXT,
606 		.vmode          = FB_VMODE_NONINTERLACED
607 } }, {
608 	.bus	= 2,
609 	.addr	= 0x38,
610 	.pixfmt	= IPU_PIX_FMT_LVDS666,
611 	.detect	= detect_i2c,
612 	.enable	= enable_lvds,
613 	.mode	= {
614 		.name           = "wsvga-lvds",
615 		.refresh        = 60,
616 		.xres           = 1024,
617 		.yres           = 600,
618 		.pixclock       = 15385,
619 		.left_margin    = 220,
620 		.right_margin   = 40,
621 		.upper_margin   = 21,
622 		.lower_margin   = 7,
623 		.hsync_len      = 60,
624 		.vsync_len      = 10,
625 		.sync           = FB_SYNC_EXT,
626 		.vmode          = FB_VMODE_NONINTERLACED
627 } }, {
628 	.bus	= 2,
629 	.addr	= 0x10,
630 	.pixfmt	= IPU_PIX_FMT_RGB666,
631 	.detect	= detect_i2c,
632 	.enable	= enable_rgb,
633 	.mode	= {
634 		.name           = "fusion7",
635 		.refresh        = 60,
636 		.xres           = 800,
637 		.yres           = 480,
638 		.pixclock       = 33898,
639 		.left_margin    = 96,
640 		.right_margin   = 24,
641 		.upper_margin   = 3,
642 		.lower_margin   = 10,
643 		.hsync_len      = 72,
644 		.vsync_len      = 7,
645 		.sync           = 0x40000002,
646 		.vmode          = FB_VMODE_NONINTERLACED
647 } }, {
648 	.bus	= 0,
649 	.addr	= 0,
650 	.pixfmt	= IPU_PIX_FMT_RGB666,
651 	.detect	= NULL,
652 	.enable	= enable_rgb,
653 	.mode	= {
654 		.name           = "svga",
655 		.refresh        = 60,
656 		.xres           = 800,
657 		.yres           = 600,
658 		.pixclock       = 15385,
659 		.left_margin    = 220,
660 		.right_margin   = 40,
661 		.upper_margin   = 21,
662 		.lower_margin   = 7,
663 		.hsync_len      = 60,
664 		.vsync_len      = 10,
665 		.sync           = 0,
666 		.vmode          = FB_VMODE_NONINTERLACED
667 } }, {
668 	.bus	= 2,
669 	.addr	= 0x41,
670 	.pixfmt	= IPU_PIX_FMT_LVDS666,
671 	.detect	= detect_i2c,
672 	.enable	= enable_lvds,
673 	.mode	= {
674 		.name           = "amp1024x600",
675 		.refresh        = 60,
676 		.xres           = 1024,
677 		.yres           = 600,
678 		.pixclock       = 15385,
679 		.left_margin    = 220,
680 		.right_margin   = 40,
681 		.upper_margin   = 21,
682 		.lower_margin   = 7,
683 		.hsync_len      = 60,
684 		.vsync_len      = 10,
685 		.sync           = FB_SYNC_EXT,
686 		.vmode          = FB_VMODE_NONINTERLACED
687 } }, {
688 	.bus	= 0,
689 	.addr	= 0,
690 	.pixfmt	= IPU_PIX_FMT_LVDS666,
691 	.detect	= 0,
692 	.enable	= enable_lvds,
693 	.mode	= {
694 		.name           = "wvga-lvds",
695 		.refresh        = 57,
696 		.xres           = 800,
697 		.yres           = 480,
698 		.pixclock       = 15385,
699 		.left_margin    = 220,
700 		.right_margin   = 40,
701 		.upper_margin   = 21,
702 		.lower_margin   = 7,
703 		.hsync_len      = 60,
704 		.vsync_len      = 10,
705 		.sync           = FB_SYNC_EXT,
706 		.vmode          = FB_VMODE_NONINTERLACED
707 } }, {
708 	.bus	= 2,
709 	.addr	= 0x48,
710 	.pixfmt	= IPU_PIX_FMT_RGB666,
711 	.detect	= detect_i2c,
712 	.enable	= enable_rgb,
713 	.mode	= {
714 		.name           = "wvga-rgb",
715 		.refresh        = 57,
716 		.xres           = 800,
717 		.yres           = 480,
718 		.pixclock       = 37037,
719 		.left_margin    = 40,
720 		.right_margin   = 60,
721 		.upper_margin   = 10,
722 		.lower_margin   = 10,
723 		.hsync_len      = 20,
724 		.vsync_len      = 10,
725 		.sync           = 0,
726 		.vmode          = FB_VMODE_NONINTERLACED
727 } }, {
728 	.bus	= 0,
729 	.addr	= 0,
730 	.pixfmt	= IPU_PIX_FMT_RGB24,
731 	.detect	= NULL,
732 	.enable	= enable_rgb,
733 	.mode	= {
734 		.name           = "qvga",
735 		.refresh        = 60,
736 		.xres           = 320,
737 		.yres           = 240,
738 		.pixclock       = 37037,
739 		.left_margin    = 38,
740 		.right_margin   = 37,
741 		.upper_margin   = 16,
742 		.lower_margin   = 15,
743 		.hsync_len      = 30,
744 		.vsync_len      = 3,
745 		.sync           = 0,
746 		.vmode          = FB_VMODE_NONINTERLACED
747 } } };
748 size_t display_count = ARRAY_SIZE(displays);
749 
750 int board_cfb_skip(void)
751 {
752 	return NULL != getenv("novideo");
753 }
754 
755 static void setup_display(void)
756 {
757 	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
758 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
759 	int reg;
760 
761 	enable_ipu_clock();
762 	imx_setup_hdmi();
763 	/* Turn on LDB0,IPU,IPU DI0 clocks */
764 	reg = __raw_readl(&mxc_ccm->CCGR3);
765 	reg |=  MXC_CCM_CCGR3_LDB_DI0_MASK;
766 	writel(reg, &mxc_ccm->CCGR3);
767 
768 	/* set LDB0, LDB1 clk select to 011/011 */
769 	reg = readl(&mxc_ccm->cs2cdr);
770 	reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
771 		 |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
772 	reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
773 	      |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
774 	writel(reg, &mxc_ccm->cs2cdr);
775 
776 	reg = readl(&mxc_ccm->cscmr2);
777 	reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
778 	writel(reg, &mxc_ccm->cscmr2);
779 
780 	reg = readl(&mxc_ccm->chsccdr);
781 	reg |= (CHSCCDR_CLK_SEL_LDB_DI0
782 		<<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
783 	writel(reg, &mxc_ccm->chsccdr);
784 
785 	reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
786 	     |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
787 	     |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
788 	     |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
789 	     |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
790 	     |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
791 	     |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
792 	     |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
793 	     |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
794 	writel(reg, &iomux->gpr[2]);
795 
796 	reg = readl(&iomux->gpr[3]);
797 	reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
798 			|IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
799 	    | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
800 	       <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
801 	writel(reg, &iomux->gpr[3]);
802 
803 	/* backlights off until needed */
804 	imx_iomux_v3_setup_multiple_pads(backlight_pads,
805 					 ARRAY_SIZE(backlight_pads));
806 	gpio_direction_input(LVDS_BACKLIGHT_GP);
807 	gpio_direction_input(RGB_BACKLIGHT_GP);
808 }
809 #endif
810 
811 static iomux_v3_cfg_t const init_pads[] = {
812 	/* SGTL5000 sys_mclk */
813 	NEW_PAD_CTRL(MX6_PAD_GPIO_0__CCM_CLKO1, OUTPUT_40OHM),
814 
815 	/* J5 - Camera MCLK */
816 	NEW_PAD_CTRL(MX6_PAD_GPIO_3__CCM_CLKO2, OUTPUT_40OHM),
817 
818 	/* wl1271 pads on nitrogen6x */
819 	/* WL12XX_WL_IRQ_GP */
820 	NEW_PAD_CTRL(MX6_PAD_NANDF_CS1__GPIO6_IO14, WEAK_PULLDOWN),
821 	/* WL12XX_WL_ENABLE_GP */
822 	NEW_PAD_CTRL(MX6_PAD_NANDF_CS2__GPIO6_IO15, OUTPUT_40OHM),
823 	/* WL12XX_BT_ENABLE_GP */
824 	NEW_PAD_CTRL(MX6_PAD_NANDF_CS3__GPIO6_IO16, OUTPUT_40OHM),
825 	/* USB otg power */
826 	NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, OUTPUT_40OHM),
827 	NEW_PAD_CTRL(MX6_PAD_NANDF_D5__GPIO2_IO05, OUTPUT_40OHM),
828 	NEW_PAD_CTRL(MX6_PAD_NANDF_WP_B__GPIO6_IO09, OUTPUT_40OHM),
829 	NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, OUTPUT_40OHM),
830 	NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06, OUTPUT_40OHM),
831 };
832 
833 #define WL12XX_WL_IRQ_GP	IMX_GPIO_NR(6, 14)
834 
835 static unsigned gpios_out_low[] = {
836 	/* Disable wl1271 */
837 	IMX_GPIO_NR(6, 15),	/* disable wireless */
838 	IMX_GPIO_NR(6, 16),	/* disable bluetooth */
839 	IMX_GPIO_NR(3, 22),	/* disable USB otg power */
840 	IMX_GPIO_NR(2, 5),	/* ov5640 mipi camera reset */
841 	IMX_GPIO_NR(1, 8),	/* ov5642 reset */
842 };
843 
844 static unsigned gpios_out_high[] = {
845 	IMX_GPIO_NR(1, 6),	/* ov5642 powerdown */
846 	IMX_GPIO_NR(6, 9),	/* ov5640 mipi camera power down */
847 };
848 
849 static void set_gpios(unsigned *p, int cnt, int val)
850 {
851 	int i;
852 
853 	for (i = 0; i < cnt; i++)
854 		gpio_direction_output(*p++, val);
855 }
856 
857 int board_early_init_f(void)
858 {
859 	setup_iomux_uart();
860 
861 	set_gpios(gpios_out_high, ARRAY_SIZE(gpios_out_high), 1);
862 	set_gpios(gpios_out_low, ARRAY_SIZE(gpios_out_low), 0);
863 	gpio_direction_input(WL12XX_WL_IRQ_GP);
864 
865 	imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
866 	imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads));
867 	setup_buttons();
868 
869 #if defined(CONFIG_VIDEO_IPUV3)
870 	setup_display();
871 #endif
872 	return 0;
873 }
874 
875 /*
876  * Do not overwrite the console
877  * Use always serial for U-Boot console
878  */
879 int overwrite_console(void)
880 {
881 	return 1;
882 }
883 
884 int board_init(void)
885 {
886 	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
887 
888 	clrsetbits_le32(&iomuxc_regs->gpr[1],
889 			IOMUXC_GPR1_OTG_ID_MASK,
890 			IOMUXC_GPR1_OTG_ID_GPIO1);
891 
892 	imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
893 
894 	/* address of boot parameters */
895 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
896 
897 #ifdef CONFIG_MXC_SPI
898 	setup_spi();
899 #endif
900 	imx_iomux_v3_setup_multiple_pads(
901 		usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
902 	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
903 	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
904 	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
905 
906 #ifdef CONFIG_SATA
907 	setup_sata();
908 #endif
909 
910 	return 0;
911 }
912 
913 int checkboard(void)
914 {
915 	if (gpio_get_value(WL12XX_WL_IRQ_GP))
916 		puts("Board: Nitrogen6X\n");
917 	else
918 		puts("Board: SABRE Lite\n");
919 
920 	return 0;
921 }
922 
923 struct button_key {
924 	char const	*name;
925 	unsigned	gpnum;
926 	char		ident;
927 };
928 
929 static struct button_key const buttons[] = {
930 	{"back",	IMX_GPIO_NR(2, 2),	'B'},
931 	{"home",	IMX_GPIO_NR(2, 4),	'H'},
932 	{"menu",	IMX_GPIO_NR(2, 1),	'M'},
933 	{"search",	IMX_GPIO_NR(2, 3),	'S'},
934 	{"volup",	IMX_GPIO_NR(7, 13),	'V'},
935 	{"voldown",	IMX_GPIO_NR(4, 5),	'v'},
936 };
937 
938 /*
939  * generate a null-terminated string containing the buttons pressed
940  * returns number of keys pressed
941  */
942 static int read_keys(char *buf)
943 {
944 	int i, numpressed = 0;
945 	for (i = 0; i < ARRAY_SIZE(buttons); i++) {
946 		if (!gpio_get_value(buttons[i].gpnum))
947 			buf[numpressed++] = buttons[i].ident;
948 	}
949 	buf[numpressed] = '\0';
950 	return numpressed;
951 }
952 
953 static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
954 {
955 	char envvalue[ARRAY_SIZE(buttons)+1];
956 	int numpressed = read_keys(envvalue);
957 	setenv("keybd", envvalue);
958 	return numpressed == 0;
959 }
960 
961 U_BOOT_CMD(
962 	kbd, 1, 1, do_kbd,
963 	"Tests for keypresses, sets 'keybd' environment variable",
964 	"Returns 0 (true) to shell if key is pressed."
965 );
966 
967 #ifdef CONFIG_PREBOOT
968 static char const kbd_magic_prefix[] = "key_magic";
969 static char const kbd_command_prefix[] = "key_cmd";
970 
971 static void preboot_keys(void)
972 {
973 	int numpressed;
974 	char keypress[ARRAY_SIZE(buttons)+1];
975 	numpressed = read_keys(keypress);
976 	if (numpressed) {
977 		char *kbd_magic_keys = getenv("magic_keys");
978 		char *suffix;
979 		/*
980 		 * loop over all magic keys
981 		 */
982 		for (suffix = kbd_magic_keys; *suffix; ++suffix) {
983 			char *keys;
984 			char magic[sizeof(kbd_magic_prefix) + 1];
985 			sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
986 			keys = getenv(magic);
987 			if (keys) {
988 				if (!strcmp(keys, keypress))
989 					break;
990 			}
991 		}
992 		if (*suffix) {
993 			char cmd_name[sizeof(kbd_command_prefix) + 1];
994 			char *cmd;
995 			sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
996 			cmd = getenv(cmd_name);
997 			if (cmd) {
998 				setenv("preboot", cmd);
999 				return;
1000 			}
1001 		}
1002 	}
1003 }
1004 #endif
1005 
1006 #ifdef CONFIG_CMD_BMODE
1007 static const struct boot_mode board_boot_modes[] = {
1008 	/* 4 bit bus width */
1009 	{"mmc0",	MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
1010 	{"mmc1",	MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
1011 	{NULL,		0},
1012 };
1013 #endif
1014 
1015 int misc_init_r(void)
1016 {
1017 #ifdef CONFIG_PREBOOT
1018 	preboot_keys();
1019 #endif
1020 
1021 #ifdef CONFIG_CMD_BMODE
1022 	add_board_boot_modes(board_boot_modes);
1023 #endif
1024 	setenv_hex("reset_cause", get_imx_reset_cause());
1025 	return 0;
1026 }
1027