1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2010
4 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
5 *
6 * Based on da850evm.c, original Copyrights follow:
7 *
8 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
9 *
10 * Based on da830evm.c. Original Copyrights follow:
11 *
12 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
13 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
14 */
15
16 #include <common.h>
17 #include <i2c.h>
18 #include <net.h>
19 #include <netdev.h>
20 #include <asm/mach-types.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/ti-common/davinci_nand.h>
23 #include <asm/arch/emac_defs.h>
24 #include <asm/io.h>
25 #include <asm/arch/davinci_misc.h>
26 #include <asm/gpio.h>
27 #include "../../../drivers/video/da8xx-fb.h"
28
29 DECLARE_GLOBAL_DATA_PTR;
30
31 static const struct da8xx_panel lcd_panel = {
32 /* Casio COM57H531x */
33 .name = "Casio_COM57H531x",
34 .width = 640,
35 .height = 480,
36 .hfp = 12,
37 .hbp = 144,
38 .hsw = 30,
39 .vfp = 10,
40 .vbp = 35,
41 .vsw = 3,
42 .pxl_clk = 25000000,
43 .invert_pxl_clk = 0,
44 };
45
46 static const struct display_panel disp_panel = {
47 QVGA,
48 16,
49 16,
50 COLOR_ACTIVE,
51 };
52
53 static const struct lcd_ctrl_config lcd_cfg = {
54 &disp_panel,
55 .ac_bias = 255,
56 .ac_bias_intrpt = 0,
57 .dma_burst_sz = 16,
58 .bpp = 16,
59 .fdd = 255,
60 .tft_alt_mode = 0,
61 .stn_565_mode = 0,
62 .mono_8bit_mode = 0,
63 .invert_line_clock = 1,
64 .invert_frm_clock = 1,
65 .sync_edge = 0,
66 .sync_ctrl = 1,
67 .raster_order = 0,
68 };
69
70 /* SPI0 pin muxer settings */
71 static const struct pinmux_config spi1_pins[] = {
72 { pinmux(5), 1, 1 },
73 { pinmux(5), 1, 2 },
74 { pinmux(5), 1, 4 },
75 { pinmux(5), 1, 5 }
76 };
77
78 /* I2C pin muxer settings */
79 static const struct pinmux_config i2c_pins[] = {
80 { pinmux(4), 2, 2 },
81 { pinmux(4), 2, 3 }
82 };
83
84 /* UART0 pin muxer settings */
85 static const struct pinmux_config uart_pins[] = {
86 { pinmux(3), 2, 7 },
87 { pinmux(3), 2, 6 },
88 { pinmux(3), 2, 4 },
89 { pinmux(3), 2, 5 }
90 };
91
92 #ifdef CONFIG_DRIVER_TI_EMAC
93 #define HAS_RMII 1
94 static const struct pinmux_config emac_pins[] = {
95 { pinmux(14), 8, 2 },
96 { pinmux(14), 8, 3 },
97 { pinmux(14), 8, 4 },
98 { pinmux(14), 8, 5 },
99 { pinmux(14), 8, 6 },
100 { pinmux(14), 8, 7 },
101 { pinmux(15), 8, 1 },
102 { pinmux(4), 8, 0 },
103 { pinmux(4), 8, 1 }
104 };
105 #endif
106
107 #ifdef CONFIG_NAND_DAVINCI
108 const struct pinmux_config nand_pins[] = {
109 { pinmux(7), 1, 0}, /* CS2 */
110 { pinmux(7), 0, 1}, /* CS3 in three state*/
111 { pinmux(7), 1, 4 }, /* EMA_WE */
112 { pinmux(7), 1, 5 }, /* EMA_OE */
113 { pinmux(9), 1, 0 }, /* EMA_D[7] */
114 { pinmux(9), 1, 1 }, /* EMA_D[6] */
115 { pinmux(9), 1, 2 }, /* EMA_D[5] */
116 { pinmux(9), 1, 3 }, /* EMA_D[4] */
117 { pinmux(9), 1, 4 }, /* EMA_D[3] */
118 { pinmux(9), 1, 5 }, /* EMA_D[2] */
119 { pinmux(9), 1, 6 }, /* EMA_D[1] */
120 { pinmux(9), 1, 7 }, /* EMA_D[0] */
121 { pinmux(12), 1, 5 }, /* EMA_A[2] */
122 { pinmux(12), 1, 6 }, /* EMA_A[1] */
123 { pinmux(6), 1, 0 } /* EMA_CLK */
124 };
125 #endif
126
127 const struct pinmux_config gpio_pins[] = {
128 { pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
129 { pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
130 { pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
131 { pinmux(19), 8, 5 }, /* GPIO6[1] DISP_ON */
132 { pinmux(14), 8, 1 } /* GPIO6[6] LCD_B_PWR*/
133 };
134
135 const struct pinmux_config lcd_pins[] = {
136 { pinmux(17), 2, 1 }, /* LCD_D_0 */
137 { pinmux(17), 2, 0 }, /* LCD_D_1 */
138 { pinmux(16), 2, 7 }, /* LCD_D_2 */
139 { pinmux(16), 2, 6 }, /* LCD_D_3 */
140 { pinmux(16), 2, 5 }, /* LCD_D_4 */
141 { pinmux(16), 2, 4 }, /* LCD_D_5 */
142 { pinmux(16), 2, 3 }, /* LCD_D_6 */
143 { pinmux(16), 2, 2 }, /* LCD_D_7 */
144 { pinmux(18), 2, 1 }, /* LCD_D_8 */
145 { pinmux(18), 2, 0 }, /* LCD_D_9 */
146 { pinmux(17), 2, 7 }, /* LCD_D_10 */
147 { pinmux(17), 2, 6 }, /* LCD_D_11 */
148 { pinmux(17), 2, 5 }, /* LCD_D_12 */
149 { pinmux(17), 2, 4 }, /* LCD_D_13 */
150 { pinmux(17), 2, 3 }, /* LCD_D_14 */
151 { pinmux(17), 2, 2 }, /* LCD_D_15 */
152 { pinmux(18), 2, 6 }, /* LCD_PCLK */
153 { pinmux(19), 2, 0 }, /* LCD_HSYNC */
154 { pinmux(19), 2, 1 }, /* LCD_VSYNC */
155 { pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */
156 };
157
158 const struct pinmux_config halten_pin[] = {
159 { pinmux(3), 4, 2 } /* GPIO8[6] HALTEN */
160 };
161
162 static const struct pinmux_resource pinmuxes[] = {
163 #ifdef CONFIG_SPI_FLASH
164 PINMUX_ITEM(spi1_pins),
165 #endif
166 PINMUX_ITEM(uart_pins),
167 PINMUX_ITEM(i2c_pins),
168 #ifdef CONFIG_NAND_DAVINCI
169 PINMUX_ITEM(nand_pins),
170 #endif
171 #ifdef CONFIG_VIDEO
172 PINMUX_ITEM(lcd_pins),
173 #endif
174 };
175
176 static const struct lpsc_resource lpsc[] = {
177 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
178 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */
179 { DAVINCI_LPSC_EMAC }, /* image download */
180 { DAVINCI_LPSC_UART0 }, /* console */
181 { DAVINCI_LPSC_GPIO },
182 { DAVINCI_LPSC_LCDC }, /* LCD */
183 };
184
board_early_init_f(void)185 int board_early_init_f(void)
186 {
187 /* PinMux for GPIO */
188 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
189 return 1;
190
191 /* Set DISP_ON high to enable LCD output*/
192 gpio_direction_output(97, 1);
193
194 /* Set the RESETOUTn low */
195 gpio_direction_output(111, 0);
196
197 /* Set U0_SW0 low for UART0 as console*/
198 gpio_direction_output(106, 0);
199
200 /* Set U0_SW1 low for UART0 as console*/
201 gpio_direction_output(108, 0);
202
203 /* Set LCD_B_PWR low to power down LCD Backlight*/
204 gpio_direction_output(102, 0);
205
206 irq_init();
207
208 /*
209 * NAND CS setup - cycle counts based on da850evm NAND timings in the
210 * Linux kernel @ 25MHz EMIFA
211 */
212 #ifdef CONFIG_NAND_DAVINCI
213 writel((DAVINCI_ABCR_WSETUP(0) |
214 DAVINCI_ABCR_WSTROBE(1) |
215 DAVINCI_ABCR_WHOLD(0) |
216 DAVINCI_ABCR_RSETUP(0) |
217 DAVINCI_ABCR_RSTROBE(1) |
218 DAVINCI_ABCR_RHOLD(0) |
219 DAVINCI_ABCR_TA(0) |
220 DAVINCI_ABCR_ASIZE_8BIT),
221 &davinci_emif_regs->ab1cr); /* CS2 */
222 #endif
223
224 /*
225 * Power on required peripherals
226 * ARM does not have access by default to PSC0 and PSC1
227 * assuming here that the DSP bootloader has set the IOPU
228 * such that PSC access is available to ARM
229 */
230 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
231 return 1;
232
233 /* setup the SUSPSRC for ARM to control emulation suspend */
234 writel(readl(&davinci_syscfg_regs->suspsrc) &
235 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
236 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
237 DAVINCI_SYSCFG_SUSPSRC_UART0),
238 &davinci_syscfg_regs->suspsrc);
239
240 /* configure pinmux settings */
241 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
242 return 1;
243
244 #ifdef CONFIG_DRIVER_TI_EMAC
245 if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
246 return 1;
247
248 davinci_emac_mii_mode_sel(HAS_RMII);
249 #endif /* CONFIG_DRIVER_TI_EMAC */
250
251 /* enable the console UART */
252 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
253 DAVINCI_UART_PWREMU_MGMT_UTRST),
254 &davinci_uart0_ctrl_regs->pwremu_mgmt);
255
256 /*
257 * Reconfigure the LCDC priority to the highest to ensure that
258 * the throughput/latency requirements for the LCDC are met.
259 */
260 writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
261 &davinci_syscfg_regs->mstpri[2]);
262
263
264 return 0;
265 }
266
267 /*
268 * Do not overwrite the console
269 * Use always serial for U-Boot console
270 */
overwrite_console(void)271 int overwrite_console(void)
272 {
273 return 1;
274 }
275
board_init(void)276 int board_init(void)
277 {
278 /* arch number of the board */
279 gd->bd->bi_arch_number = MACH_TYPE_EA20;
280
281 /* address of boot parameters */
282 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
283
284 da8xx_video_init(&lcd_panel, &lcd_cfg, 16);
285
286 return 0;
287 }
288
289 #ifdef CONFIG_BOARD_LATE_INIT
290
board_late_init(void)291 int board_late_init(void)
292 {
293 unsigned char buf[2];
294 int ret;
295
296 /* PinMux for HALTEN */
297 if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
298 return 1;
299
300 /* Set HALTEN to high */
301 gpio_direction_output(134, 1);
302
303 /* Set fixed contrast settings for LCD via I2C potentiometer */
304 buf[0] = 0x00;
305 buf[1] = 0xd7;
306 ret = i2c_write(0x2e, 6, 1, buf, 2);
307 if (ret)
308 puts("\nContrast Settings FAILED\n");
309
310 /* Set LCD_B_PWR high to power up LCD Backlight*/
311 gpio_set_value(102, 1);
312 return 0;
313 }
314 #endif /* CONFIG_BOARD_LATE_INIT */
315
316 #ifdef CONFIG_DRIVER_TI_EMAC
317
318 /*
319 * Initializes on-board ethernet controllers.
320 */
board_eth_init(bd_t * bis)321 int board_eth_init(bd_t *bis)
322 {
323 if (!davinci_emac_initialize()) {
324 printf("Error: Ethernet init failed!\n");
325 return -1;
326 }
327
328 /*
329 * This board has a RMII PHY. However, the MDC line on the SOM
330 * must not be disabled (there is no MII PHY on the
331 * baseboard) via the GPIO2[6], because this pin
332 * disables at the same time the SPI flash.
333 */
334
335 return 0;
336 }
337 #endif /* CONFIG_DRIVER_TI_EMAC */
338