1 /*
2 * arch/arm/mach-ep93xx/ts72xx.c
3 * Technologic Systems TS72xx SBC support.
4 *
5 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or (at
10 * your option) any later version.
11 */
12
13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/io.h>
19 #include <linux/mtd/rawnand.h>
20 #include <linux/mtd/partitions.h>
21 #include <linux/spi/spi.h>
22 #include <linux/spi/flash.h>
23 #include <linux/spi/mmc_spi.h>
24 #include <linux/mmc/host.h>
25 #include <linux/platform_data/spi-ep93xx.h>
26
27 #include <mach/gpio-ep93xx.h>
28 #include <mach/hardware.h>
29 #include <mach/irqs.h>
30 #include <mach/gpio-ep93xx.h>
31
32 #include <asm/mach-types.h>
33 #include <asm/mach/map.h>
34 #include <asm/mach/arch.h>
35
36 #include "soc.h"
37 #include "ts72xx.h"
38
39 /*************************************************************************
40 * IO map
41 *************************************************************************/
42 static struct map_desc ts72xx_io_desc[] __initdata = {
43 {
44 .virtual = (unsigned long)TS72XX_MODEL_VIRT_BASE,
45 .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
46 .length = TS72XX_MODEL_SIZE,
47 .type = MT_DEVICE,
48 }, {
49 .virtual = (unsigned long)TS72XX_OPTIONS_VIRT_BASE,
50 .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
51 .length = TS72XX_OPTIONS_SIZE,
52 .type = MT_DEVICE,
53 }, {
54 .virtual = (unsigned long)TS72XX_OPTIONS2_VIRT_BASE,
55 .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
56 .length = TS72XX_OPTIONS2_SIZE,
57 .type = MT_DEVICE,
58 }, {
59 .virtual = (unsigned long)TS72XX_CPLDVER_VIRT_BASE,
60 .pfn = __phys_to_pfn(TS72XX_CPLDVER_PHYS_BASE),
61 .length = TS72XX_CPLDVER_SIZE,
62 .type = MT_DEVICE,
63 }
64 };
65
ts72xx_map_io(void)66 static void __init ts72xx_map_io(void)
67 {
68 ep93xx_map_io();
69 iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
70 }
71
72
73 /*************************************************************************
74 * NAND flash
75 *************************************************************************/
76 #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */
77 #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */
78
ts72xx_nand_hwcontrol(struct mtd_info * mtd,int cmd,unsigned int ctrl)79 static void ts72xx_nand_hwcontrol(struct mtd_info *mtd,
80 int cmd, unsigned int ctrl)
81 {
82 struct nand_chip *chip = mtd_to_nand(mtd);
83
84 if (ctrl & NAND_CTRL_CHANGE) {
85 void __iomem *addr = chip->IO_ADDR_R;
86 unsigned char bits;
87
88 addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE);
89
90 bits = __raw_readb(addr) & ~0x07;
91 bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */
92 bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */
93 bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */
94
95 __raw_writeb(bits, addr);
96 }
97
98 if (cmd != NAND_CMD_NONE)
99 __raw_writeb(cmd, chip->IO_ADDR_W);
100 }
101
ts72xx_nand_device_ready(struct mtd_info * mtd)102 static int ts72xx_nand_device_ready(struct mtd_info *mtd)
103 {
104 struct nand_chip *chip = mtd_to_nand(mtd);
105 void __iomem *addr = chip->IO_ADDR_R;
106
107 addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE);
108
109 return !!(__raw_readb(addr) & 0x20);
110 }
111
112 #define TS72XX_BOOTROM_PART_SIZE (SZ_16K)
113 #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M)
114
115 static struct mtd_partition ts72xx_nand_parts[] = {
116 {
117 .name = "TS-BOOTROM",
118 .offset = 0,
119 .size = TS72XX_BOOTROM_PART_SIZE,
120 .mask_flags = MTD_WRITEABLE, /* force read-only */
121 }, {
122 .name = "Linux",
123 .offset = MTDPART_OFS_RETAIN,
124 .size = TS72XX_REDBOOT_PART_SIZE,
125 /* leave so much for last partition */
126 }, {
127 .name = "RedBoot",
128 .offset = MTDPART_OFS_APPEND,
129 .size = MTDPART_SIZ_FULL,
130 .mask_flags = MTD_WRITEABLE, /* force read-only */
131 },
132 };
133
134 static struct platform_nand_data ts72xx_nand_data = {
135 .chip = {
136 .nr_chips = 1,
137 .chip_offset = 0,
138 .chip_delay = 15,
139 },
140 .ctrl = {
141 .cmd_ctrl = ts72xx_nand_hwcontrol,
142 .dev_ready = ts72xx_nand_device_ready,
143 },
144 };
145
146 static struct resource ts72xx_nand_resource[] = {
147 {
148 .start = 0, /* filled in later */
149 .end = 0, /* filled in later */
150 .flags = IORESOURCE_MEM,
151 },
152 };
153
154 static struct platform_device ts72xx_nand_flash = {
155 .name = "gen_nand",
156 .id = -1,
157 .dev.platform_data = &ts72xx_nand_data,
158 .resource = ts72xx_nand_resource,
159 .num_resources = ARRAY_SIZE(ts72xx_nand_resource),
160 };
161
ts72xx_register_flash(struct mtd_partition * parts,int n,resource_size_t start)162 void __init ts72xx_register_flash(struct mtd_partition *parts, int n,
163 resource_size_t start)
164 {
165 /*
166 * TS7200 has NOR flash all other TS72xx board have NAND flash.
167 */
168 if (board_is_ts7200()) {
169 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
170 } else {
171 ts72xx_nand_resource[0].start = start;
172 ts72xx_nand_resource[0].end = start + SZ_16M - 1;
173
174 ts72xx_nand_data.chip.partitions = parts;
175 ts72xx_nand_data.chip.nr_partitions = n;
176
177 platform_device_register(&ts72xx_nand_flash);
178 }
179 }
180
181 /*************************************************************************
182 * RTC M48T86
183 *************************************************************************/
184 #define TS72XX_RTC_INDEX_PHYS_BASE (EP93XX_CS1_PHYS_BASE + 0x00800000)
185 #define TS72XX_RTC_DATA_PHYS_BASE (EP93XX_CS1_PHYS_BASE + 0x01700000)
186
187 static struct resource ts72xx_rtc_resources[] = {
188 DEFINE_RES_MEM(TS72XX_RTC_INDEX_PHYS_BASE, 0x01),
189 DEFINE_RES_MEM(TS72XX_RTC_DATA_PHYS_BASE, 0x01),
190 };
191
192 static struct platform_device ts72xx_rtc_device = {
193 .name = "rtc-m48t86",
194 .id = -1,
195 .resource = ts72xx_rtc_resources,
196 .num_resources = ARRAY_SIZE(ts72xx_rtc_resources),
197 };
198
199 /*************************************************************************
200 * Watchdog (in CPLD)
201 *************************************************************************/
202 #define TS72XX_WDT_CONTROL_PHYS_BASE (EP93XX_CS2_PHYS_BASE + 0x03800000)
203 #define TS72XX_WDT_FEED_PHYS_BASE (EP93XX_CS2_PHYS_BASE + 0x03c00000)
204
205 static struct resource ts72xx_wdt_resources[] = {
206 DEFINE_RES_MEM(TS72XX_WDT_CONTROL_PHYS_BASE, 0x01),
207 DEFINE_RES_MEM(TS72XX_WDT_FEED_PHYS_BASE, 0x01),
208 };
209
210 static struct platform_device ts72xx_wdt_device = {
211 .name = "ts72xx-wdt",
212 .id = -1,
213 .resource = ts72xx_wdt_resources,
214 .num_resources = ARRAY_SIZE(ts72xx_wdt_resources),
215 };
216
217 /*************************************************************************
218 * ETH
219 *************************************************************************/
220 static struct ep93xx_eth_data __initdata ts72xx_eth_data = {
221 .phy_id = 1,
222 };
223
224 /*************************************************************************
225 * SPI SD/MMC host
226 *************************************************************************/
227 #define BK3_EN_SDCARD_PHYS_BASE 0x12400000
228 #define BK3_EN_SDCARD_PWR 0x0
229 #define BK3_DIS_SDCARD_PWR 0x0C
bk3_mmc_spi_setpower(struct device * dev,unsigned int vdd)230 static void bk3_mmc_spi_setpower(struct device *dev, unsigned int vdd)
231 {
232 void __iomem *pwr_sd = ioremap(BK3_EN_SDCARD_PHYS_BASE, SZ_4K);
233
234 if (!pwr_sd) {
235 pr_err("Failed to enable SD card power!");
236 return;
237 }
238
239 pr_debug("%s: SD card pwr %s VDD:0x%x\n", __func__,
240 !!vdd ? "ON" : "OFF", vdd);
241
242 if (!!vdd)
243 __raw_writeb(BK3_EN_SDCARD_PWR, pwr_sd);
244 else
245 __raw_writeb(BK3_DIS_SDCARD_PWR, pwr_sd);
246
247 iounmap(pwr_sd);
248 }
249
250 static struct mmc_spi_platform_data bk3_spi_mmc_data = {
251 .detect_delay = 500,
252 .powerup_msecs = 100,
253 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
254 .caps = MMC_CAP_NONREMOVABLE,
255 .setpower = bk3_mmc_spi_setpower,
256 };
257
258 /*************************************************************************
259 * SPI Bus - SD card access
260 *************************************************************************/
261 static struct spi_board_info bk3_spi_board_info[] __initdata = {
262 {
263 .modalias = "mmc_spi",
264 .platform_data = &bk3_spi_mmc_data,
265 .max_speed_hz = 7.4E6,
266 .bus_num = 0,
267 .chip_select = 0,
268 .mode = SPI_MODE_0,
269 },
270 };
271
272 /*
273 * This is a stub -> the FGPIO[3] pin is not connected on the schematic
274 * The all work is performed automatically by !SPI_FRAME (SFRM1) and
275 * goes through CPLD
276 */
277 static int bk3_spi_chipselects[] __initdata = {
278 EP93XX_GPIO_LINE_F(3),
279 };
280
281 static struct ep93xx_spi_info bk3_spi_master __initdata = {
282 .chipselect = bk3_spi_chipselects,
283 .num_chipselect = ARRAY_SIZE(bk3_spi_chipselects),
284 .use_dma = 1,
285 };
286
287 /*************************************************************************
288 * TS72XX support code
289 *************************************************************************/
290 #if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX)
291
292 /* Relative to EP93XX_CS1_PHYS_BASE */
293 #define TS73XX_FPGA_LOADER_BASE 0x03c00000
294
295 static struct resource ts73xx_fpga_resources[] = {
296 {
297 .start = EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE,
298 .end = EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE + 1,
299 .flags = IORESOURCE_MEM,
300 },
301 };
302
303 static struct platform_device ts73xx_fpga_device = {
304 .name = "ts73xx-fpga-mgr",
305 .id = -1,
306 .resource = ts73xx_fpga_resources,
307 .num_resources = ARRAY_SIZE(ts73xx_fpga_resources),
308 };
309
310 #endif
311
312 /*************************************************************************
313 * SPI Bus
314 *************************************************************************/
315 static struct spi_board_info ts72xx_spi_devices[] __initdata = {
316 {
317 .modalias = "tmp122",
318 .max_speed_hz = 2 * 1000 * 1000,
319 .bus_num = 0,
320 .chip_select = 0,
321 },
322 };
323
324 static int ts72xx_spi_chipselects[] __initdata = {
325 EP93XX_GPIO_LINE_F(2), /* DIO_17 */
326 };
327
328 static struct ep93xx_spi_info ts72xx_spi_info __initdata = {
329 .chipselect = ts72xx_spi_chipselects,
330 .num_chipselect = ARRAY_SIZE(ts72xx_spi_chipselects),
331 };
332
ts72xx_init_machine(void)333 static void __init ts72xx_init_machine(void)
334 {
335 ep93xx_init_devices();
336 ts72xx_register_flash(ts72xx_nand_parts, ARRAY_SIZE(ts72xx_nand_parts),
337 is_ts9420_installed() ?
338 EP93XX_CS7_PHYS_BASE : EP93XX_CS6_PHYS_BASE);
339 platform_device_register(&ts72xx_rtc_device);
340 platform_device_register(&ts72xx_wdt_device);
341
342 ep93xx_register_eth(&ts72xx_eth_data, 1);
343 #if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX)
344 if (board_is_ts7300())
345 platform_device_register(&ts73xx_fpga_device);
346 #endif
347 ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices,
348 ARRAY_SIZE(ts72xx_spi_devices));
349 }
350
351 MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
352 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
353 .atag_offset = 0x100,
354 .map_io = ts72xx_map_io,
355 .init_irq = ep93xx_init_irq,
356 .init_time = ep93xx_timer_init,
357 .init_machine = ts72xx_init_machine,
358 .init_late = ep93xx_init_late,
359 .restart = ep93xx_restart,
360 MACHINE_END
361
362 /*************************************************************************
363 * EP93xx I2S audio peripheral handling
364 *************************************************************************/
365 static struct resource ep93xx_i2s_resource[] = {
366 DEFINE_RES_MEM(EP93XX_I2S_PHYS_BASE, 0x100),
367 DEFINE_RES_IRQ_NAMED(IRQ_EP93XX_SAI, "spilink i2s slave"),
368 };
369
370 static struct platform_device ep93xx_i2s_device = {
371 .name = "ep93xx-spilink-i2s",
372 .id = -1,
373 .num_resources = ARRAY_SIZE(ep93xx_i2s_resource),
374 .resource = ep93xx_i2s_resource,
375 };
376
377 /*************************************************************************
378 * BK3 support code
379 *************************************************************************/
380 static struct mtd_partition bk3_nand_parts[] = {
381 {
382 .name = "System",
383 .offset = 0x00000000,
384 .size = 0x01e00000,
385 }, {
386 .name = "Data",
387 .offset = 0x01e00000,
388 .size = 0x05f20000
389 }, {
390 .name = "RedBoot",
391 .offset = 0x07d20000,
392 .size = 0x002e0000,
393 .mask_flags = MTD_WRITEABLE, /* force RO */
394 },
395 };
396
bk3_init_machine(void)397 static void __init bk3_init_machine(void)
398 {
399 ep93xx_init_devices();
400
401 ts72xx_register_flash(bk3_nand_parts, ARRAY_SIZE(bk3_nand_parts),
402 EP93XX_CS6_PHYS_BASE);
403
404 ep93xx_register_eth(&ts72xx_eth_data, 1);
405
406 ep93xx_register_spi(&bk3_spi_master, bk3_spi_board_info,
407 ARRAY_SIZE(bk3_spi_board_info));
408
409 /* Configure ep93xx's I2S to use AC97 pins */
410 ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97);
411 platform_device_register(&ep93xx_i2s_device);
412 }
413
414 MACHINE_START(BK3, "Liebherr controller BK3.1")
415 /* Maintainer: Lukasz Majewski <lukma@denx.de> */
416 .atag_offset = 0x100,
417 .map_io = ts72xx_map_io,
418 .init_irq = ep93xx_init_irq,
419 .init_time = ep93xx_timer_init,
420 .init_machine = bk3_init_machine,
421 .init_late = ep93xx_init_late,
422 .restart = ep93xx_restart,
423 MACHINE_END
424
