1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2015
4 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
5 *
6 * Based on:
7 * Copyright (C) 2012 Freescale Semiconductor, Inc.
8 *
9 * Author: Fabio Estevam <fabio.estevam@freescale.com>
10 */
11
12 #include <asm/arch/clock.h>
13 #include <asm/arch/imx-regs.h>
14 #include <asm/arch/iomux.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/boot_mode.h>
20 #include <asm/mach-imx/mxc_i2c.h>
21 #include <asm/mach-imx/video.h>
22 #include <mmc.h>
23 #include <fsl_esdhc.h>
24 #include <miiphy.h>
25 #include <netdev.h>
26 #include <asm/arch/mxc_hdmi.h>
27 #include <asm/arch/crm_regs.h>
28 #include <linux/fb.h>
29 #include <ipu_pixfmt.h>
30 #include <asm/io.h>
31 #include <asm/arch/sys_proto.h>
32 #include <pwm.h>
33 #include <micrel.h>
34 #include <spi.h>
35 #include <video.h>
36 #include <../drivers/video/ipu.h>
37 #if defined(CONFIG_VIDEO_BMP_LOGO)
38 #include <bmp_logo.h>
39 #endif
40
41 #define USDHC2_PAD_CTRL (PAD_CTL_SPEED_LOW | \
42 PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
43
44 #if (CONFIG_SYS_BOARD_VERSION == 2)
45 /* 4.3 display controller */
46 #define ECSPI1_CS0 IMX_GPIO_NR(4, 9)
47 #define ECSPI4_CS0 IMX_GPIO_NR(3, 29)
48 #elif (CONFIG_SYS_BOARD_VERSION == 3)
49 #define ECSPI1_CS0 IMX_GPIO_NR(2, 30) /* NOR flash */
50 /* 4.3 display controller */
51 #define ECSPI1_CS1 IMX_GPIO_NR(4, 10)
52 #endif
53
54 #define SOFT_RESET_GPIO IMX_GPIO_NR(7, 13)
55 #define SD2_DRIVER_ENABLE IMX_GPIO_NR(7, 8)
56
57 struct i2c_pads_info i2c_pad_info3 = {
58 .scl = {
59 .i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
60 .gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
61 .gp = IMX_GPIO_NR(1, 5)
62 },
63 .sda = {
64 .i2c_mode = MX6_PAD_GPIO_6__I2C3_SDA | PC,
65 .gpio_mode = MX6_PAD_GPIO_6__GPIO1_IO06 | PC,
66 .gp = IMX_GPIO_NR(1, 6)
67 }
68 };
69
70 struct i2c_pads_info i2c_pad_info4 = {
71 .scl = {
72 .i2c_mode = MX6_PAD_GPIO_7__I2C4_SCL | PC,
73 .gpio_mode = MX6_PAD_GPIO_7__GPIO1_IO07 | PC,
74 .gp = IMX_GPIO_NR(1, 7)
75 },
76 .sda = {
77 .i2c_mode = MX6_PAD_GPIO_8__I2C4_SDA | PC,
78 .gpio_mode = MX6_PAD_GPIO_8__GPIO1_IO08 | PC,
79 .gp = IMX_GPIO_NR(1, 8)
80 }
81 };
82
83 iomux_v3_cfg_t const uart1_pads[] = {
84 MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
85 MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
86 MX6_PAD_EIM_D19__UART1_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
87 MX6_PAD_EIM_D20__UART1_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
88 };
89
90 iomux_v3_cfg_t const uart2_pads[] = {
91 MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
92 MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
93 };
94
95 iomux_v3_cfg_t const uart3_pads[] = {
96 MX6_PAD_EIM_D24__UART3_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
97 MX6_PAD_EIM_D25__UART3_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
98 MX6_PAD_EIM_D31__UART3_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
99 MX6_PAD_EIM_D23__UART3_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
100 };
101
102 iomux_v3_cfg_t const uart4_pads[] = {
103 MX6_PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
104 MX6_PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
105 };
106
107 iomux_v3_cfg_t const gpio_pads[] = {
108 /* LED enable*/
109 MX6_PAD_ENET_CRS_DV__GPIO1_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL),
110 /* LED yellow */
111 MX6_PAD_NANDF_CS3__GPIO6_IO16 | MUX_PAD_CTRL(NO_PAD_CTRL),
112 /* LED red */
113 #if (CONFIG_SYS_BOARD_VERSION == 2)
114 MX6_PAD_EIM_EB0__GPIO2_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL),
115 #elif (CONFIG_SYS_BOARD_VERSION == 3)
116 MX6_PAD_EIM_WAIT__GPIO5_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL),
117 #endif
118 /* LED green */
119 MX6_PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL),
120 /* LED blue */
121 MX6_PAD_EIM_EB1__GPIO2_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
122 /* spi flash WP protect */
123 MX6_PAD_SD4_DAT7__GPIO2_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
124 /* spi CS 0 */
125 MX6_PAD_EIM_D29__GPIO3_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
126 /* spi bus #2 SS driver enable */
127 MX6_PAD_EIM_A23__GPIO6_IO06 | MUX_PAD_CTRL(NO_PAD_CTRL),
128 /* RST_LOC# PHY reset input (has pull-down!)*/
129 MX6_PAD_GPIO_18__GPIO7_IO13 | MUX_PAD_CTRL(NO_PAD_CTRL),
130 /* SD 2 level shifter output enable */
131 MX6_PAD_SD3_RST__GPIO7_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL),
132 /* SD1 card detect input */
133 MX6_PAD_ENET_RXD0__GPIO1_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL),
134 /* SD1 write protect input */
135 MX6_PAD_DI0_PIN4__GPIO4_IO20 | MUX_PAD_CTRL(NO_PAD_CTRL),
136 /* SD2 card detect input */
137 MX6_PAD_GPIO_19__GPIO4_IO05 | MUX_PAD_CTRL(NO_PAD_CTRL),
138 /* SD2 write protect input */
139 MX6_PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
140 /* Touchscreen IRQ */
141 MX6_PAD_SD4_DAT1__GPIO2_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL),
142 };
143
144 static iomux_v3_cfg_t const misc_pads[] = {
145 /* USB_OTG_ID = GPIO1_24*/
146 MX6_PAD_ENET_RX_ER__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
147 /* H1 Power enable = GPIO1_0*/
148 MX6_PAD_GPIO_0__USB_H1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
149 /* OTG Power enable = GPIO4_15*/
150 MX6_PAD_KEY_ROW4__USB_OTG_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
151 };
152
153 iomux_v3_cfg_t const enet_pads[] = {
154 MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
155 MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
156 MX6_PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
157 MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
158 MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
159 MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
160 MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
161 MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
162 MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
163 MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
164 MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
165 MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
166 MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
167 MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
168 MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
169 };
170
171 static iomux_v3_cfg_t const backlight_pads[] = {
172 /* backlight PWM brightness control */
173 MX6_PAD_GPIO_9__PWM1_OUT | MUX_PAD_CTRL(NO_PAD_CTRL),
174 /* backlight enable */
175 MX6_PAD_EIM_BCLK__GPIO6_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL),
176 /* LCD power enable */
177 MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
178 };
179
180 static iomux_v3_cfg_t const ecspi1_pads[] = {
181 MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
182 MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
183 MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
184 #if (CONFIG_SYS_BOARD_VERSION == 2)
185 MX6_PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(SPI_PAD_CTRL),
186 #elif (CONFIG_SYS_BOARD_VERSION == 3)
187 MX6_PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(SPI_PAD_CTRL),
188 MX6_PAD_KEY_COL2__GPIO4_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
189 #endif
190 };
191
setup_iomux_enet(void)192 static void setup_iomux_enet(void)
193 {
194 imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
195 }
196
197 #if (CONFIG_SYS_BOARD_VERSION == 2)
198 iomux_v3_cfg_t const ecspi4_pads[] = {
199 MX6_PAD_EIM_D21__ECSPI4_SCLK | MUX_PAD_CTRL(NO_PAD_CTRL),
200 MX6_PAD_EIM_D22__ECSPI4_MISO | MUX_PAD_CTRL(NO_PAD_CTRL),
201 MX6_PAD_EIM_D28__ECSPI4_MOSI | MUX_PAD_CTRL(NO_PAD_CTRL),
202 MX6_PAD_EIM_A25__GPIO5_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL),
203 MX6_PAD_EIM_D29__GPIO3_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
204 };
205 #endif
206
207 static iomux_v3_cfg_t const display_pads[] = {
208 MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK | MUX_PAD_CTRL(DISP_PAD_CTRL),
209 MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
210 MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
211 MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
212 MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
213 MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
214 MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
215 MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
216 MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
217 MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
218 MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
219 MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
220 MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
221 MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
222 MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
223 MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
224 MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
225 MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
226 MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
227 MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
228 MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
229 MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
230 MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
231 MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
232 MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
233 MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
234 MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
235 MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
236 };
237
board_spi_cs_gpio(unsigned bus,unsigned cs)238 int board_spi_cs_gpio(unsigned bus, unsigned cs)
239 {
240 if (bus == CONFIG_SF_DEFAULT_BUS && cs == CONFIG_SF_DEFAULT_CS)
241 #if (CONFIG_SYS_BOARD_VERSION == 2)
242 return IMX_GPIO_NR(5, 2);
243
244 if (bus == 0 && cs == 0)
245 return IMX_GPIO_NR(4, 9);
246 #elif (CONFIG_SYS_BOARD_VERSION == 3)
247 return ECSPI1_CS0;
248
249 if (bus == 0 && cs == 1)
250 return ECSPI1_CS1;
251 #endif
252 return -1;
253 }
254
setup_spi(void)255 static void setup_spi(void)
256 {
257 int i;
258
259 imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
260
261 #if (CONFIG_SYS_BOARD_VERSION == 2)
262 imx_iomux_v3_setup_multiple_pads(ecspi4_pads, ARRAY_SIZE(ecspi4_pads));
263 #endif
264
265 for (i = 0; i < 4; i++)
266 enable_spi_clk(true, i);
267
268 gpio_direction_output(ECSPI1_CS0, 1);
269 #if (CONFIG_SYS_BOARD_VERSION == 2)
270 gpio_direction_output(ECSPI4_CS1, 0);
271 /* set cs0 to high (second device on spi bus #4) */
272 gpio_direction_output(ECSPI4_CS0, 1);
273 #elif (CONFIG_SYS_BOARD_VERSION == 3)
274 gpio_direction_output(ECSPI1_CS1, 1);
275 #endif
276 }
277
setup_iomux_uart(void)278 static void setup_iomux_uart(void)
279 {
280 switch (CONFIG_MXC_UART_BASE) {
281 case UART1_BASE:
282 imx_iomux_v3_setup_multiple_pads(uart1_pads,
283 ARRAY_SIZE(uart1_pads));
284 break;
285 case UART2_BASE:
286 imx_iomux_v3_setup_multiple_pads(uart2_pads,
287 ARRAY_SIZE(uart2_pads));
288 break;
289 case UART3_BASE:
290 imx_iomux_v3_setup_multiple_pads(uart3_pads,
291 ARRAY_SIZE(uart3_pads));
292 break;
293 case UART4_BASE:
294 imx_iomux_v3_setup_multiple_pads(uart4_pads,
295 ARRAY_SIZE(uart4_pads));
296 break;
297 }
298 }
299
board_phy_config(struct phy_device * phydev)300 int board_phy_config(struct phy_device *phydev)
301 {
302 /* control data pad skew - devaddr = 0x02, register = 0x04 */
303 ksz9031_phy_extended_write(phydev, 0x02,
304 MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
305 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
306 /* rx data pad skew - devaddr = 0x02, register = 0x05 */
307 ksz9031_phy_extended_write(phydev, 0x02,
308 MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
309 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
310 /* tx data pad skew - devaddr = 0x02, register = 0x06 */
311 ksz9031_phy_extended_write(phydev, 0x02,
312 MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
313 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
314 /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */
315 ksz9031_phy_extended_write(phydev, 0x02,
316 MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
317 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF);
318
319 if (phydev->drv->config)
320 phydev->drv->config(phydev);
321
322 return 0;
323 }
324
board_eth_init(bd_t * bis)325 int board_eth_init(bd_t *bis)
326 {
327 setup_iomux_enet();
328 return cpu_eth_init(bis);
329 }
330
rotate_logo_one(unsigned char * out,unsigned char * in)331 static int rotate_logo_one(unsigned char *out, unsigned char *in)
332 {
333 int i, j;
334
335 for (i = 0; i < BMP_LOGO_WIDTH; i++)
336 for (j = 0; j < BMP_LOGO_HEIGHT; j++)
337 out[j * BMP_LOGO_WIDTH + BMP_LOGO_HEIGHT - 1 - i] =
338 in[i * BMP_LOGO_WIDTH + j];
339 return 0;
340 }
341
342 /*
343 * Rotate the BMP_LOGO (only)
344 * Will only work, if the logo is square, as
345 * BMP_LOGO_HEIGHT and BMP_LOGO_WIDTH are defines, not variables
346 */
rotate_logo(int rotations)347 void rotate_logo(int rotations)
348 {
349 unsigned char out_logo[BMP_LOGO_WIDTH * BMP_LOGO_HEIGHT];
350 unsigned char *in_logo;
351 int i, j;
352
353 if (BMP_LOGO_WIDTH != BMP_LOGO_HEIGHT)
354 return;
355
356 in_logo = bmp_logo_bitmap;
357
358 /* one 90 degree rotation */
359 if (rotations == 1 || rotations == 2 || rotations == 3)
360 rotate_logo_one(out_logo, in_logo);
361
362 /* second 90 degree rotation */
363 if (rotations == 2 || rotations == 3)
364 rotate_logo_one(in_logo, out_logo);
365
366 /* third 90 degree rotation */
367 if (rotations == 3)
368 rotate_logo_one(out_logo, in_logo);
369
370 /* copy result back to original array */
371 if (rotations == 1 || rotations == 3)
372 for (i = 0; i < BMP_LOGO_WIDTH; i++)
373 for (j = 0; j < BMP_LOGO_HEIGHT; j++)
374 in_logo[i * BMP_LOGO_WIDTH + j] =
375 out_logo[i * BMP_LOGO_WIDTH + j];
376 }
377
enable_display_power(void)378 static void enable_display_power(void)
379 {
380 imx_iomux_v3_setup_multiple_pads(backlight_pads,
381 ARRAY_SIZE(backlight_pads));
382
383 /* backlight enable */
384 gpio_direction_output(IMX_GPIO_NR(6, 31), 1);
385 /* LCD power enable */
386 gpio_direction_output(IMX_GPIO_NR(6, 15), 1);
387
388 /* enable backlight PWM 1 */
389 if (pwm_init(0, 0, 0))
390 goto error;
391 /* duty cycle 500ns, period: 3000ns */
392 if (pwm_config(0, 50000, 300000))
393 goto error;
394 if (pwm_enable(0))
395 goto error;
396 return;
397
398 error:
399 puts("error init pwm for backlight\n");
400 return;
401 }
402
enable_lvds(struct display_info_t const * dev)403 static void enable_lvds(struct display_info_t const *dev)
404 {
405 struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
406 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
407 int reg;
408 s32 timeout = 100000;
409
410 /* set PLL5 clock */
411 reg = readl(&ccm->analog_pll_video);
412 reg |= BM_ANADIG_PLL_VIDEO_POWERDOWN;
413 writel(reg, &ccm->analog_pll_video);
414
415 /* set PLL5 to 232720000Hz */
416 reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
417 reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(0x26);
418 reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
419 reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(0);
420 writel(reg, &ccm->analog_pll_video);
421
422 writel(BF_ANADIG_PLL_VIDEO_NUM_A(0xC0238),
423 &ccm->analog_pll_video_num);
424 writel(BF_ANADIG_PLL_VIDEO_DENOM_B(0xF4240),
425 &ccm->analog_pll_video_denom);
426
427 reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
428 writel(reg, &ccm->analog_pll_video);
429
430 while (timeout--)
431 if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
432 break;
433 if (timeout < 0)
434 printf("Warning: video pll lock timeout!\n");
435
436 reg = readl(&ccm->analog_pll_video);
437 reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
438 reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
439 writel(reg, &ccm->analog_pll_video);
440
441 /* set LDB0, LDB1 clk select to 000/000 (PLL5 clock) */
442 reg = readl(&ccm->cs2cdr);
443 reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
444 | MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
445 reg |= (0 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
446 | (0 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
447 writel(reg, &ccm->cs2cdr);
448
449 reg = readl(&ccm->cscmr2);
450 reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
451 writel(reg, &ccm->cscmr2);
452
453 reg = readl(&ccm->chsccdr);
454 reg |= (CHSCCDR_CLK_SEL_LDB_DI0
455 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
456 writel(reg, &ccm->chsccdr);
457
458 reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
459 | IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
460 | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_HIGH
461 | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
462 | IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
463 | IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
464 | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
465 writel(reg, &iomux->gpr[2]);
466
467 reg = readl(&iomux->gpr[3]);
468 reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
469 | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
470 << IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
471 writel(reg, &iomux->gpr[3]);
472
473 return;
474 }
475
enable_spi_display(struct display_info_t const * dev)476 static void enable_spi_display(struct display_info_t const *dev)
477 {
478 struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
479 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
480 int reg;
481 s32 timeout = 100000;
482
483 #if defined(CONFIG_VIDEO_BMP_LOGO)
484 rotate_logo(3); /* portrait display in landscape mode */
485 #endif
486
487 /*
488 * set ldb clock to 28341000 Hz calculated through the formula:
489 * (XRES + LEFT_M + RIGHT_M + HSYNC_LEN) *
490 * (YRES + UPPER_M + LOWER_M + VSYNC_LEN) * REFRESH)
491 * see:
492 * https://community.freescale.com/thread/308170
493 */
494 ipu_set_ldb_clock(28341000);
495
496 reg = readl(&ccm->cs2cdr);
497
498 /* select pll 5 clock */
499 reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
500 | MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
501 writel(reg, &ccm->cs2cdr);
502
503 /* set PLL5 to 197994996Hz */
504 reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
505 reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(0x21);
506 reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
507 reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(0);
508 writel(reg, &ccm->analog_pll_video);
509
510 writel(BF_ANADIG_PLL_VIDEO_NUM_A(0xfbf4),
511 &ccm->analog_pll_video_num);
512 writel(BF_ANADIG_PLL_VIDEO_DENOM_B(0xf4240),
513 &ccm->analog_pll_video_denom);
514
515 reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
516 writel(reg, &ccm->analog_pll_video);
517
518 while (timeout--)
519 if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
520 break;
521 if (timeout < 0)
522 printf("Warning: video pll lock timeout!\n");
523
524 reg = readl(&ccm->analog_pll_video);
525 reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
526 reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
527 writel(reg, &ccm->analog_pll_video);
528
529 /* set LDB0, LDB1 clk select to 000/000 (PLL5 clock) */
530 reg = readl(&ccm->cs2cdr);
531 reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
532 | MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
533 reg |= (0 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
534 | (0 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
535 writel(reg, &ccm->cs2cdr);
536
537 reg = readl(&ccm->cscmr2);
538 reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
539 writel(reg, &ccm->cscmr2);
540
541 reg = readl(&ccm->chsccdr);
542 reg |= (CHSCCDR_CLK_SEL_LDB_DI0
543 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
544 reg &= ~MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK;
545 reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET);
546 reg &= ~MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK;
547 reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET);
548 writel(reg, &ccm->chsccdr);
549
550 reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
551 | IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
552 | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_HIGH
553 | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
554 | IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
555 | IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
556 | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
557 writel(reg, &iomux->gpr[2]);
558
559 reg = readl(&iomux->gpr[3]);
560 reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
561 | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
562 << IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
563 writel(reg, &iomux->gpr[3]);
564
565 imx_iomux_v3_setup_multiple_pads(
566 display_pads,
567 ARRAY_SIZE(display_pads));
568
569 return;
570 }
setup_display(void)571 static void setup_display(void)
572 {
573 enable_ipu_clock();
574 enable_display_power();
575 }
576
setup_iomux_gpio(void)577 static void setup_iomux_gpio(void)
578 {
579 imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads));
580 }
581
set_gpr_register(void)582 static void set_gpr_register(void)
583 {
584 struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
585
586 writel(IOMUXC_GPR1_APP_CLK_REQ_N | IOMUXC_GPR1_PCIE_RDY_L23 |
587 IOMUXC_GPR1_EXC_MON_SLVE |
588 (2 << IOMUXC_GPR1_ADDRS0_OFFSET) |
589 IOMUXC_GPR1_ACT_CS0,
590 &iomuxc_regs->gpr[1]);
591 writel(0x0, &iomuxc_regs->gpr[8]);
592 writel(IOMUXC_GPR12_ARMP_IPG_CLK_EN | IOMUXC_GPR12_ARMP_AHB_CLK_EN |
593 IOMUXC_GPR12_ARMP_ATB_CLK_EN | IOMUXC_GPR12_ARMP_APB_CLK_EN,
594 &iomuxc_regs->gpr[12]);
595 }
596
board_early_init_f(void)597 int board_early_init_f(void)
598 {
599 setup_iomux_uart();
600 setup_iomux_gpio();
601
602 gpio_direction_output(SOFT_RESET_GPIO, 1);
603 gpio_direction_output(SD2_DRIVER_ENABLE, 1);
604 setup_display();
605 set_gpr_register();
606 return 0;
607 }
608
setup_i2c4(void)609 static void setup_i2c4(void)
610 {
611 setup_i2c(3, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
612 &i2c_pad_info4);
613 }
614
setup_board_gpio(void)615 static void setup_board_gpio(void)
616 {
617 /* enable all LEDs */
618 gpio_request(IMX_GPIO_NR(2, 13), "LED ena"); /* 25 */
619 gpio_direction_output(IMX_GPIO_NR(1, 25), 0);
620
621 /* switch off Status LEDs */
622 #if (CONFIG_SYS_BOARD_VERSION == 2)
623 gpio_request(IMX_GPIO_NR(6, 16), "LED yellow"); /* 176 */
624 gpio_direction_output(IMX_GPIO_NR(6, 16), 1);
625 gpio_request(IMX_GPIO_NR(2, 28), "LED red"); /* 60 */
626 gpio_direction_output(IMX_GPIO_NR(2, 28), 1);
627 gpio_request(IMX_GPIO_NR(5, 4), "LED green"); /* 132 */
628 gpio_direction_output(IMX_GPIO_NR(5, 4), 1);
629 gpio_request(IMX_GPIO_NR(2, 29), "LED blue"); /* 61 */
630 gpio_direction_output(IMX_GPIO_NR(2, 29), 1);
631 #elif (CONFIG_SYS_BOARD_VERSION == 3)
632 gpio_request(IMX_GPIO_NR(6, 16), "LED yellow"); /* 176 */
633 gpio_direction_output(IMX_GPIO_NR(6, 16), 0);
634 gpio_request(IMX_GPIO_NR(5, 0), "LED red"); /* 128 */
635 gpio_direction_output(IMX_GPIO_NR(5, 0), 0);
636 gpio_request(IMX_GPIO_NR(5, 4), "LED green"); /* 132 */
637 gpio_direction_output(IMX_GPIO_NR(5, 4), 0);
638 gpio_request(IMX_GPIO_NR(2, 29), "LED blue"); /* 61 */
639 gpio_direction_output(IMX_GPIO_NR(2, 29), 0);
640 #endif
641 }
642
setup_board_spi(void)643 static void setup_board_spi(void)
644 {
645 /* enable spi bus #2 SS drivers (and spi bus #4 SS1 for rev2b) */
646 gpio_direction_output(IMX_GPIO_NR(6, 6), 1);
647 }
648
board_late_init(void)649 int board_late_init(void)
650 {
651 char *my_bootdelay;
652 char bootmode = 0;
653 char const *panel = env_get("panel");
654
655 /*
656 * Check the boot-source. If booting from NOR Flash,
657 * disable bootdelay
658 */
659 gpio_request(IMX_GPIO_NR(7, 6), "bootsel0");
660 gpio_direction_input(IMX_GPIO_NR(7, 6));
661 gpio_request(IMX_GPIO_NR(7, 7), "bootsel1");
662 gpio_direction_input(IMX_GPIO_NR(7, 7));
663 gpio_request(IMX_GPIO_NR(7, 1), "bootsel2");
664 gpio_direction_input(IMX_GPIO_NR(7, 1));
665 bootmode |= (gpio_get_value(IMX_GPIO_NR(7, 6)) ? 1 : 0) << 0;
666 bootmode |= (gpio_get_value(IMX_GPIO_NR(7, 7)) ? 1 : 0) << 1;
667 bootmode |= (gpio_get_value(IMX_GPIO_NR(7, 1)) ? 1 : 0) << 2;
668
669 if (bootmode == 7) {
670 my_bootdelay = env_get("nor_bootdelay");
671 if (my_bootdelay != NULL)
672 env_set("bootdelay", my_bootdelay);
673 else
674 env_set("bootdelay", "-2");
675 }
676
677 /* if we have the lg panel, we can initialze it now */
678 if (panel)
679 if (!strcmp(panel, displays[1].mode.name))
680 lg4573_spi_startup(CONFIG_LG4573_BUS,
681 CONFIG_LG4573_CS,
682 10000000, SPI_MODE_0);
683
684 return 0;
685 }
686