blob: a3865ad56ad9958a394ba54468eac4f888b45581 [file] [log] [blame]
Marek Vasut607232e2013-08-31 15:53:46 +02001/*
2 * SanDisk Sansa Fuze Plus board
3 *
4 * Copyright (C) 2013 Marek Vasut <marex@denx.de>
5 *
6 * Hardware investigation done by:
7 *
8 * Amaury Pouly <amaury.pouly@gmail.com>
9 *
10 * SPDX-License-Identifier: GPL-2.0+
11 */
12
13#include <common.h>
14#include <errno.h>
15#include <asm/gpio.h>
16#include <asm/io.h>
17#include <asm/arch/iomux-mx23.h>
18#include <asm/arch/imx-regs.h>
19#include <asm/arch/clock.h>
20#include <asm/arch/sys_proto.h>
21
22DECLARE_GLOBAL_DATA_PTR;
23
24/*
25 * Functions
26 */
27int board_early_init_f(void)
28{
29 /* IO0 clock at 480MHz */
30 mxs_set_ioclk(MXC_IOCLK0, 480000);
31
32 /* SSP0 clock at 96MHz */
33 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
34
35 return 0;
36}
37
38int dram_init(void)
39{
40 return mxs_dram_init();
41}
42
43#ifdef CONFIG_CMD_MMC
44static int xfi3_mmc_cd(int id)
45{
46 switch (id) {
47 case 0:
48 /* The SSP_DETECT is inverted on this board. */
49 return gpio_get_value(MX23_PAD_SSP1_DETECT__GPIO_2_1);
50 case 1:
51 /* Internal eMMC always present */
52 return 1;
53 default:
54 return 0;
55 }
56}
57
58int board_mmc_init(bd_t *bis)
59{
60 int ret;
61
62 /* MicroSD slot */
63 gpio_direction_input(MX23_PAD_SSP1_DETECT__GPIO_2_1);
64 gpio_direction_output(MX23_PAD_GPMI_D08__GPIO_0_8, 0);
65 ret = mxsmmc_initialize(bis, 0, NULL, xfi3_mmc_cd);
66 if (ret)
67 return ret;
68
69 /* Internal eMMC */
70 gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0);
71 ret = mxsmmc_initialize(bis, 1, NULL, xfi3_mmc_cd);
72
73 return ret;
74}
75#endif
76
77#ifdef CONFIG_VIDEO_MXS
78#define MUX_CONFIG_LCD (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
79const iomux_cfg_t iomux_lcd_gpio[] = {
80 MX23_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_LCD,
81 MX23_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_LCD,
82 MX23_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_LCD,
83 MX23_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_LCD,
84 MX23_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_LCD,
85 MX23_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_LCD,
86 MX23_PAD_LCD_D06__GPIO_1_6 | MUX_CONFIG_LCD,
87 MX23_PAD_LCD_D07__GPIO_1_7 | MUX_CONFIG_LCD,
88 MX23_PAD_LCD_D08__GPIO_1_8 | MUX_CONFIG_LCD,
89 MX23_PAD_LCD_D09__GPIO_1_9 | MUX_CONFIG_LCD,
90 MX23_PAD_LCD_D10__GPIO_1_10 | MUX_CONFIG_LCD,
91 MX23_PAD_LCD_D11__GPIO_1_11 | MUX_CONFIG_LCD,
92 MX23_PAD_LCD_D12__GPIO_1_12 | MUX_CONFIG_LCD,
93 MX23_PAD_LCD_D13__GPIO_1_13 | MUX_CONFIG_LCD,
94 MX23_PAD_LCD_D14__GPIO_1_14 | MUX_CONFIG_LCD,
95 MX23_PAD_LCD_D15__GPIO_1_15 | MUX_CONFIG_LCD,
96 MX23_PAD_LCD_D16__GPIO_1_16 | MUX_CONFIG_LCD,
97 MX23_PAD_LCD_D17__GPIO_1_17 | MUX_CONFIG_LCD,
98 MX23_PAD_LCD_RESET__GPIO_1_18 | MUX_CONFIG_LCD,
99 MX23_PAD_LCD_RS__GPIO_1_19 | MUX_CONFIG_LCD,
100 MX23_PAD_LCD_WR__GPIO_1_20 | MUX_CONFIG_LCD,
101 MX23_PAD_LCD_CS__GPIO_1_21 | MUX_CONFIG_LCD,
102 MX23_PAD_LCD_ENABLE__GPIO_1_23 | MUX_CONFIG_LCD,
103};
104
105const iomux_cfg_t iomux_lcd_lcd[] = {
106 MX23_PAD_LCD_D00__LCD_D00 | MUX_CONFIG_LCD,
107 MX23_PAD_LCD_D01__LCD_D01 | MUX_CONFIG_LCD,
108 MX23_PAD_LCD_D02__LCD_D02 | MUX_CONFIG_LCD,
109 MX23_PAD_LCD_D03__LCD_D03 | MUX_CONFIG_LCD,
110 MX23_PAD_LCD_D04__LCD_D04 | MUX_CONFIG_LCD,
111 MX23_PAD_LCD_D05__LCD_D05 | MUX_CONFIG_LCD,
112 MX23_PAD_LCD_D06__LCD_D06 | MUX_CONFIG_LCD,
113 MX23_PAD_LCD_D07__LCD_D07 | MUX_CONFIG_LCD,
114 MX23_PAD_LCD_D08__LCD_D08 | MUX_CONFIG_LCD,
115 MX23_PAD_LCD_D09__LCD_D09 | MUX_CONFIG_LCD,
116 MX23_PAD_LCD_D10__LCD_D10 | MUX_CONFIG_LCD,
117 MX23_PAD_LCD_D11__LCD_D11 | MUX_CONFIG_LCD,
118 MX23_PAD_LCD_D12__LCD_D12 | MUX_CONFIG_LCD,
119 MX23_PAD_LCD_D13__LCD_D13 | MUX_CONFIG_LCD,
120 MX23_PAD_LCD_D14__LCD_D14 | MUX_CONFIG_LCD,
121 MX23_PAD_LCD_D15__LCD_D15 | MUX_CONFIG_LCD,
122 MX23_PAD_LCD_D16__LCD_D16 | MUX_CONFIG_LCD,
123 MX23_PAD_LCD_D17__LCD_D17 | MUX_CONFIG_LCD,
124 MX23_PAD_LCD_RESET__LCD_RESET | MUX_CONFIG_LCD,
125 MX23_PAD_LCD_RS__LCD_RS | MUX_CONFIG_LCD,
126 MX23_PAD_LCD_WR__LCD_WR | MUX_CONFIG_LCD,
127 MX23_PAD_LCD_CS__LCD_CS | MUX_CONFIG_LCD,
128 MX23_PAD_LCD_ENABLE__LCD_ENABLE | MUX_CONFIG_LCD,
129 MX23_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD,
130};
131
132static int mxsfb_read_register(uint32_t reg, uint32_t *value)
133{
134 iomux_cfg_t mux;
135 uint32_t val = 0;
136 int i;
137
138 /* Mangle the register offset. */
139 reg = ((reg & 0xff) << 1) | (((reg >> 8) & 0xff) << 10);
140
141 /*
142 * The SmartLCD interface on MX233 can only do WRITE operation
143 * via the LCDIF controller. Implement the READ operation by
144 * fiddling with bits.
145 */
146 mxs_iomux_setup_multiple_pads(iomux_lcd_gpio,
147 ARRAY_SIZE(iomux_lcd_gpio));
148
149 gpio_direction_output(MX23_PAD_LCD_RS__GPIO_1_19, 1);
150 gpio_direction_output(MX23_PAD_LCD_CS__GPIO_1_21, 1);
151 gpio_direction_output(MX23_PAD_LCD_WR__GPIO_1_20, 1);
152 gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 1);
153
154 for (i = 0; i < 18; i++) {
155 mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO);
156 gpio_direction_output(mux, 0);
157 }
158
159 udelay(2);
160 gpio_direction_output(MX23_PAD_LCD_RS__GPIO_1_19, 0);
161 udelay(1);
162 gpio_direction_output(MX23_PAD_LCD_CS__GPIO_1_21, 0);
163 udelay(1);
164 gpio_direction_output(MX23_PAD_LCD_WR__GPIO_1_20, 0);
165 udelay(1);
166
167 for (i = 0; i < 18; i++) {
168 mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO);
169 gpio_direction_output(mux, (reg >> i) & 1);
170 }
171 udelay(1);
172
173 gpio_direction_output(MX23_PAD_LCD_WR__GPIO_1_20, 1);
174 udelay(3);
175
176 for (i = 0; i < 18; i++) {
177 mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO);
178 gpio_direction_input(mux);
179 }
180 udelay(2);
181
182 gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 0);
183 udelay(1);
184 gpio_direction_output(MX23_PAD_LCD_RS__GPIO_1_19, 1);
185 udelay(1);
186 gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 1);
187 udelay(3);
188 gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 0);
189 udelay(2);
190
191 for (i = 0; i < 18; i++) {
192 mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO);
193 val |= !!gpio_get_value(mux) << i;
194 }
195 udelay(1);
196
197 gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 1);
198 udelay(1);
199 gpio_direction_output(MX23_PAD_LCD_CS__GPIO_1_21, 1);
200 udelay(1);
201
202 mxs_iomux_setup_multiple_pads(iomux_lcd_lcd,
203 ARRAY_SIZE(iomux_lcd_lcd));
204
205 /* Demangle the register value. */
206 *value = ((val >> 1) & 0xff) | ((val >> 2) & 0xff00);
207
208 writel(val, 0x2000);
209 return 0;
210}
211
212static int mxsfb_write_byte(uint32_t payload, const unsigned int data)
213{
214 struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)MXS_LCDIF_BASE;
215 const unsigned int timeout = 0x10000;
216
217 /* What is going on here I do not know. FIXME */
218 payload = ((payload & 0xff) << 1) | (((payload >> 8) & 0xff) << 10);
219
220 if (mxs_wait_mask_clr(&regs->hw_lcdif_ctrl_reg, LCDIF_CTRL_RUN,
221 timeout))
222 return -ETIMEDOUT;
223
224 writel((1 << LCDIF_TRANSFER_COUNT_V_COUNT_OFFSET) |
225 (1 << LCDIF_TRANSFER_COUNT_H_COUNT_OFFSET),
226 &regs->hw_lcdif_transfer_count);
227
228 writel(LCDIF_CTRL_DATA_SELECT | LCDIF_CTRL_RUN,
229 &regs->hw_lcdif_ctrl_clr);
230
231 if (data)
232 writel(LCDIF_CTRL_DATA_SELECT, &regs->hw_lcdif_ctrl_set);
233
234 writel(LCDIF_CTRL_RUN, &regs->hw_lcdif_ctrl_set);
235
236 if (mxs_wait_mask_clr(&regs->hw_lcdif_lcdif_stat_reg, 1 << 29,
237 timeout))
238 return -ETIMEDOUT;
239
240 writel(payload, &regs->hw_lcdif_data);
241 return mxs_wait_mask_clr(&regs->hw_lcdif_ctrl_reg, LCDIF_CTRL_RUN,
242 timeout);
243}
244
245static void mxsfb_write_register(uint32_t reg, uint32_t data)
246{
247 mxsfb_write_byte(reg, 0);
248 mxsfb_write_byte(data, 1);
249}
250
251static const struct {
252 uint8_t reg;
253 uint8_t delay;
254 uint16_t val;
255} lcd_regs[] = {
256 { 0xe5, 0 , 0x78f0 },
257 { 0xe3, 0 , 0x3008 },
258 { 0xe7, 0 , 0x0012 },
259 { 0xef, 0 , 0x1231 },
260 { 0x00, 0 , 0x0001 },
261 { 0x01, 0 , 0x0100 },
262 { 0x02, 0 , 0x0700 },
263 { 0x03, 0 , 0x1030 },
264 { 0x04, 0 , 0x0000 },
265 { 0x08, 0 , 0x0207 },
266 { 0x09, 0 , 0x0000 },
267 { 0x0a, 0 , 0x0000 },
268 { 0x0c, 0 , 0x0000 },
269 { 0x0d, 0 , 0x0000 },
270 { 0x0f, 0 , 0x0000 },
271 { 0x10, 0 , 0x0000 },
272 { 0x11, 0 , 0x0007 },
273 { 0x12, 0 , 0x0000 },
274 { 0x13, 20 , 0x0000 },
275 /* Wait 20 mS here. */
276 { 0x10, 0 , 0x1290 },
277 { 0x11, 50 , 0x0007 },
278 /* Wait 50 mS here. */
279 { 0x12, 50 , 0x0019 },
280 /* Wait 50 mS here. */
281 { 0x13, 0 , 0x1700 },
282 { 0x29, 50 , 0x0014 },
283 /* Wait 50 mS here. */
284 { 0x20, 0 , 0x0000 },
285 { 0x21, 0 , 0x0000 },
286 { 0x30, 0 , 0x0504 },
287 { 0x31, 0 , 0x0007 },
288 { 0x32, 0 , 0x0006 },
289 { 0x35, 0 , 0x0106 },
290 { 0x36, 0 , 0x0202 },
291 { 0x37, 0 , 0x0504 },
292 { 0x38, 0 , 0x0500 },
293 { 0x39, 0 , 0x0706 },
294 { 0x3c, 0 , 0x0204 },
295 { 0x3d, 0 , 0x0202 },
296 { 0x50, 0 , 0x0000 },
297 { 0x51, 0 , 0x00ef },
298 { 0x52, 0 , 0x0000 },
299 { 0x53, 0 , 0x013f },
300 { 0x60, 0 , 0xa700 },
301 { 0x61, 0 , 0x0001 },
302 { 0x6a, 0 , 0x0000 },
303 { 0x2b, 50 , 0x000d },
304 /* Wait 50 mS here. */
305 { 0x90, 0 , 0x0011 },
306 { 0x92, 0 , 0x0600 },
307 { 0x93, 0 , 0x0003 },
308 { 0x95, 0 , 0x0110 },
309 { 0x97, 0 , 0x0000 },
310 { 0x98, 0 , 0x0000 },
311 { 0x07, 0 , 0x0173 },
312};
313
314void board_mxsfb_system_setup(void)
315{
316 struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)MXS_LCDIF_BASE;
317 uint32_t id;
318 int i;
319
320 /* Switch the LCDIF into System-Mode */
321 writel(LCDIF_CTRL_LCDIF_MASTER | LCDIF_CTRL_DOTCLK_MODE |
322 LCDIF_CTRL_BYPASS_COUNT, &regs->hw_lcdif_ctrl_clr);
323
324 /* To program the LCD, switch to 18bit bus + 18bit data. */
325 clrsetbits_le32(&regs->hw_lcdif_ctrl,
326 LCDIF_CTRL_WORD_LENGTH_MASK | LCDIF_CTRL_LCD_DATABUS_WIDTH_MASK,
327 LCDIF_CTRL_WORD_LENGTH_18BIT |
328 LCDIF_CTRL_LCD_DATABUS_WIDTH_18BIT);
329
330 mxsfb_read_register(0, &id);
331 writel(id, 0x2004);
332
333 /* Restart the SmartLCD controller */
334 mdelay(50);
335 writel(1, &regs->hw_lcdif_ctrl1_set);
336 mdelay(50);
337 writel(1, &regs->hw_lcdif_ctrl1_clr);
338 mdelay(50);
339 writel(1, &regs->hw_lcdif_ctrl1_set);
340 mdelay(50);
341
342 /* Program the SmartLCD controller */
343 writel(LCDIF_CTRL1_RECOVER_ON_UNDERFLOW, &regs->hw_lcdif_ctrl1_set);
344
345 writel((0x02 << LCDIF_TIMING_CMD_HOLD_OFFSET) |
346 (0x02 << LCDIF_TIMING_CMD_SETUP_OFFSET) |
347 (0x02 << LCDIF_TIMING_DATA_HOLD_OFFSET) |
348 (0x01 << LCDIF_TIMING_DATA_SETUP_OFFSET),
349 &regs->hw_lcdif_timing);
350
351 /*
352 * ILI9325 init and configuration sequence.
353 */
354 for (i = 0; i < ARRAY_SIZE(lcd_regs); i++) {
355 mxsfb_write_register(lcd_regs[i].reg, lcd_regs[i].val);
356 if (lcd_regs[i].delay)
357 mdelay(lcd_regs[i].delay);
358 }
359 /* Turn on Framebuffer Upload Mode */
360 mxsfb_write_byte(0x22, 0);
361
362 writel(LCDIF_CTRL_LCDIF_MASTER | LCDIF_CTRL_DATA_SELECT,
363 &regs->hw_lcdif_ctrl_set);
364
365 /* Operate the framebuffer in 16bit mode. */
366 clrsetbits_le32(&regs->hw_lcdif_ctrl,
367 LCDIF_CTRL_WORD_LENGTH_MASK | LCDIF_CTRL_LCD_DATABUS_WIDTH_MASK,
368 LCDIF_CTRL_WORD_LENGTH_16BIT |
369 LCDIF_CTRL_LCD_DATABUS_WIDTH_18BIT);
370}
371#endif
372
373int board_init(void)
374{
375 /* Adress of boot parameters */
376 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
377
378 /* Turn on PWM backlight */
379 gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1);
380
381 return 0;
382}
383
384int board_eth_init(bd_t *bis)
385{
386 usb_eth_initialize(bis);
387 return 0;
388}