1 /*
2 * Hawkboard.org based on TI's OMAP-L138 Platform
3 *
4 * Initial code: Syed Mohammed Khasim
5 *
6 * Copyright (C) 2009 Texas Instruments Incorporated - https://www.ti.com
7 *
8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" without any warranty of
10 * any kind, whether express or implied.
11 */
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/console.h>
15 #include <linux/interrupt.h>
16 #include <linux/gpio.h>
17 #include <linux/gpio/machine.h>
18 #include <linux/mtd/partitions.h>
19 #include <linux/mtd/rawnand.h>
20 #include <linux/platform_data/gpio-davinci.h>
21 #include <linux/platform_data/mtd-davinci.h>
22 #include <linux/platform_data/mtd-davinci-aemif.h>
23 #include <linux/platform_data/ti-aemif.h>
24 #include <linux/regulator/fixed.h>
25 #include <linux/regulator/machine.h>
26
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29
30 #include <mach/common.h>
31 #include <mach/da8xx.h>
32 #include <mach/mux.h>
33
34 #define HAWKBOARD_PHY_ID "davinci_mdio-0:07"
35
36 #define DA850_USB1_VBUS_PIN GPIO_TO_PIN(2, 4)
37 #define DA850_USB1_OC_PIN GPIO_TO_PIN(6, 13)
38
39 static short omapl138_hawk_mii_pins[] __initdata = {
40 DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
41 DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
42 DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
43 DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
44 DA850_MDIO_D,
45 -1
46 };
47
omapl138_hawk_config_emac(void)48 static __init void omapl138_hawk_config_emac(void)
49 {
50 void __iomem *cfgchip3 = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
51 int ret;
52 u32 val;
53 struct davinci_soc_info *soc_info = &davinci_soc_info;
54
55 val = __raw_readl(cfgchip3);
56 val &= ~BIT(8);
57 ret = davinci_cfg_reg_list(omapl138_hawk_mii_pins);
58 if (ret) {
59 pr_warn("%s: CPGMAC/MII mux setup failed: %d\n", __func__, ret);
60 return;
61 }
62
63 /* configure the CFGCHIP3 register for MII */
64 __raw_writel(val, cfgchip3);
65 pr_info("EMAC: MII PHY configured\n");
66
67 soc_info->emac_pdata->phy_id = HAWKBOARD_PHY_ID;
68
69 ret = da8xx_register_emac();
70 if (ret)
71 pr_warn("%s: EMAC registration failed: %d\n", __func__, ret);
72 }
73
74 /*
75 * The following EDMA channels/slots are not being used by drivers (for
76 * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
77 * hence they are being reserved for codecs on the DSP side.
78 */
79 static const s16 da850_dma0_rsv_chans[][2] = {
80 /* (offset, number) */
81 { 8, 6},
82 {24, 4},
83 {30, 2},
84 {-1, -1}
85 };
86
87 static const s16 da850_dma0_rsv_slots[][2] = {
88 /* (offset, number) */
89 { 8, 6},
90 {24, 4},
91 {30, 50},
92 {-1, -1}
93 };
94
95 static const s16 da850_dma1_rsv_chans[][2] = {
96 /* (offset, number) */
97 { 0, 28},
98 {30, 2},
99 {-1, -1}
100 };
101
102 static const s16 da850_dma1_rsv_slots[][2] = {
103 /* (offset, number) */
104 { 0, 28},
105 {30, 90},
106 {-1, -1}
107 };
108
109 static struct edma_rsv_info da850_edma_cc0_rsv = {
110 .rsv_chans = da850_dma0_rsv_chans,
111 .rsv_slots = da850_dma0_rsv_slots,
112 };
113
114 static struct edma_rsv_info da850_edma_cc1_rsv = {
115 .rsv_chans = da850_dma1_rsv_chans,
116 .rsv_slots = da850_dma1_rsv_slots,
117 };
118
119 static struct edma_rsv_info *da850_edma_rsv[2] = {
120 &da850_edma_cc0_rsv,
121 &da850_edma_cc1_rsv,
122 };
123
124 static const short hawk_mmcsd0_pins[] = {
125 DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2,
126 DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD,
127 DA850_GPIO3_12, DA850_GPIO3_13,
128 -1
129 };
130
131 #define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
132 #define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
133
134 static struct gpiod_lookup_table mmc_gpios_table = {
135 .dev_id = "da830-mmc.0",
136 .table = {
137 GPIO_LOOKUP("davinci_gpio", DA850_HAWK_MMCSD_CD_PIN, "cd",
138 GPIO_ACTIVE_LOW),
139 GPIO_LOOKUP("davinci_gpio", DA850_HAWK_MMCSD_WP_PIN, "wp",
140 GPIO_ACTIVE_LOW),
141 },
142 };
143
144 static struct davinci_mmc_config da850_mmc_config = {
145 .wires = 4,
146 .max_freq = 50000000,
147 .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
148 };
149
omapl138_hawk_mmc_init(void)150 static __init void omapl138_hawk_mmc_init(void)
151 {
152 int ret;
153
154 ret = davinci_cfg_reg_list(hawk_mmcsd0_pins);
155 if (ret) {
156 pr_warn("%s: MMC/SD0 mux setup failed: %d\n", __func__, ret);
157 return;
158 }
159
160 gpiod_add_lookup_table(&mmc_gpios_table);
161
162 ret = da8xx_register_mmcsd0(&da850_mmc_config);
163 if (ret) {
164 pr_warn("%s: MMC/SD0 registration failed: %d\n", __func__, ret);
165 goto mmc_setup_mmcsd_fail;
166 }
167
168 return;
169
170 mmc_setup_mmcsd_fail:
171 gpiod_remove_lookup_table(&mmc_gpios_table);
172 }
173
174 static struct mtd_partition omapl138_hawk_nandflash_partition[] = {
175 {
176 .name = "u-boot env",
177 .offset = 0,
178 .size = SZ_128K,
179 .mask_flags = MTD_WRITEABLE,
180 },
181 {
182 .name = "u-boot",
183 .offset = MTDPART_OFS_APPEND,
184 .size = SZ_512K,
185 .mask_flags = MTD_WRITEABLE,
186 },
187 {
188 .name = "free space",
189 .offset = MTDPART_OFS_APPEND,
190 .size = MTDPART_SIZ_FULL,
191 .mask_flags = 0,
192 },
193 };
194
195 static struct davinci_aemif_timing omapl138_hawk_nandflash_timing = {
196 .wsetup = 24,
197 .wstrobe = 21,
198 .whold = 14,
199 .rsetup = 19,
200 .rstrobe = 50,
201 .rhold = 0,
202 .ta = 20,
203 };
204
205 static struct davinci_nand_pdata omapl138_hawk_nandflash_data = {
206 .core_chipsel = 1,
207 .parts = omapl138_hawk_nandflash_partition,
208 .nr_parts = ARRAY_SIZE(omapl138_hawk_nandflash_partition),
209 .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST,
210 .ecc_bits = 4,
211 .bbt_options = NAND_BBT_USE_FLASH,
212 .options = NAND_BUSWIDTH_16,
213 .timing = &omapl138_hawk_nandflash_timing,
214 .mask_chipsel = 0,
215 .mask_ale = 0,
216 .mask_cle = 0,
217 };
218
219 static struct resource omapl138_hawk_nandflash_resource[] = {
220 {
221 .start = DA8XX_AEMIF_CS3_BASE,
222 .end = DA8XX_AEMIF_CS3_BASE + SZ_32M,
223 .flags = IORESOURCE_MEM,
224 },
225 {
226 .start = DA8XX_AEMIF_CTL_BASE,
227 .end = DA8XX_AEMIF_CTL_BASE + SZ_32K,
228 .flags = IORESOURCE_MEM,
229 },
230 };
231
232 static struct resource omapl138_hawk_aemif_resource[] = {
233 {
234 .start = DA8XX_AEMIF_CTL_BASE,
235 .end = DA8XX_AEMIF_CTL_BASE + SZ_32K,
236 .flags = IORESOURCE_MEM,
237 }
238 };
239
240 static struct aemif_abus_data omapl138_hawk_aemif_abus_data[] = {
241 {
242 .cs = 3,
243 }
244 };
245
246 static struct platform_device omapl138_hawk_aemif_devices[] = {
247 {
248 .name = "davinci_nand",
249 .id = -1,
250 .dev = {
251 .platform_data = &omapl138_hawk_nandflash_data,
252 },
253 .resource = omapl138_hawk_nandflash_resource,
254 .num_resources = ARRAY_SIZE(omapl138_hawk_nandflash_resource),
255 }
256 };
257
258 static struct aemif_platform_data omapl138_hawk_aemif_pdata = {
259 .cs_offset = 2,
260 .abus_data = omapl138_hawk_aemif_abus_data,
261 .num_abus_data = ARRAY_SIZE(omapl138_hawk_aemif_abus_data),
262 .sub_devices = omapl138_hawk_aemif_devices,
263 .num_sub_devices = ARRAY_SIZE(omapl138_hawk_aemif_devices),
264 };
265
266 static struct platform_device omapl138_hawk_aemif_device = {
267 .name = "ti-aemif",
268 .id = -1,
269 .dev = {
270 .platform_data = &omapl138_hawk_aemif_pdata,
271 },
272 .resource = omapl138_hawk_aemif_resource,
273 .num_resources = ARRAY_SIZE(omapl138_hawk_aemif_resource),
274 };
275
276 static const short omapl138_hawk_nand_pins[] = {
277 DA850_EMA_WAIT_1, DA850_NEMA_OE, DA850_NEMA_WE, DA850_NEMA_CS_3,
278 DA850_EMA_D_0, DA850_EMA_D_1, DA850_EMA_D_2, DA850_EMA_D_3,
279 DA850_EMA_D_4, DA850_EMA_D_5, DA850_EMA_D_6, DA850_EMA_D_7,
280 DA850_EMA_D_8, DA850_EMA_D_9, DA850_EMA_D_10, DA850_EMA_D_11,
281 DA850_EMA_D_12, DA850_EMA_D_13, DA850_EMA_D_14, DA850_EMA_D_15,
282 DA850_EMA_A_1, DA850_EMA_A_2,
283 -1
284 };
285
omapl138_hawk_register_aemif(void)286 static int omapl138_hawk_register_aemif(void)
287 {
288 int ret;
289
290 ret = davinci_cfg_reg_list(omapl138_hawk_nand_pins);
291 if (ret)
292 pr_warn("%s: NAND mux setup failed: %d\n", __func__, ret);
293
294 return platform_device_register(&omapl138_hawk_aemif_device);
295 }
296
297 static const short da850_hawk_usb11_pins[] = {
298 DA850_GPIO2_4, DA850_GPIO6_13,
299 -1
300 };
301
302 static struct regulator_consumer_supply hawk_usb_supplies[] = {
303 REGULATOR_SUPPLY("vbus", NULL),
304 };
305
306 static struct regulator_init_data hawk_usb_vbus_data = {
307 .consumer_supplies = hawk_usb_supplies,
308 .num_consumer_supplies = ARRAY_SIZE(hawk_usb_supplies),
309 .constraints = {
310 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
311 },
312 };
313
314 static struct fixed_voltage_config hawk_usb_vbus = {
315 .supply_name = "vbus",
316 .microvolts = 3300000,
317 .init_data = &hawk_usb_vbus_data,
318 };
319
320 static struct platform_device hawk_usb_vbus_device = {
321 .name = "reg-fixed-voltage",
322 .id = 0,
323 .dev = {
324 .platform_data = &hawk_usb_vbus,
325 },
326 };
327
328 static struct gpiod_lookup_table hawk_usb_oc_gpio_lookup = {
329 .dev_id = "ohci-da8xx",
330 .table = {
331 GPIO_LOOKUP("davinci_gpio", DA850_USB1_OC_PIN, "oc", 0),
332 { }
333 },
334 };
335
336 static struct gpiod_lookup_table hawk_usb_vbus_gpio_lookup = {
337 .dev_id = "reg-fixed-voltage.0",
338 .table = {
339 GPIO_LOOKUP("davinci_gpio", DA850_USB1_VBUS_PIN, NULL, 0),
340 { }
341 },
342 };
343
344 static struct gpiod_lookup_table *hawk_usb_gpio_lookups[] = {
345 &hawk_usb_oc_gpio_lookup,
346 &hawk_usb_vbus_gpio_lookup,
347 };
348
349 static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
350 /* TPS2087 switch @ 5V */
351 .potpgt = (3 + 1) / 2, /* 3 ms max */
352 };
353
omapl138_hawk_usb_init(void)354 static __init void omapl138_hawk_usb_init(void)
355 {
356 int ret;
357
358 ret = davinci_cfg_reg_list(da850_hawk_usb11_pins);
359 if (ret) {
360 pr_warn("%s: USB 1.1 PinMux setup failed: %d\n", __func__, ret);
361 return;
362 }
363
364 ret = da8xx_register_usb_phy_clocks();
365 if (ret)
366 pr_warn("%s: USB PHY CLK registration failed: %d\n",
367 __func__, ret);
368
369 gpiod_add_lookup_tables(hawk_usb_gpio_lookups,
370 ARRAY_SIZE(hawk_usb_gpio_lookups));
371
372 ret = da8xx_register_usb_phy();
373 if (ret)
374 pr_warn("%s: USB PHY registration failed: %d\n",
375 __func__, ret);
376
377 ret = platform_device_register(&hawk_usb_vbus_device);
378 if (ret) {
379 pr_warn("%s: Unable to register the vbus supply\n", __func__);
380 return;
381 }
382
383 ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
384 if (ret)
385 pr_warn("%s: USB 1.1 registration failed: %d\n", __func__, ret);
386
387 return;
388 }
389
omapl138_hawk_init(void)390 static __init void omapl138_hawk_init(void)
391 {
392 int ret;
393
394 da850_register_clocks();
395
396 ret = da850_register_gpio();
397 if (ret)
398 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
399
400 davinci_serial_init(da8xx_serial_device);
401
402 omapl138_hawk_config_emac();
403
404 ret = da850_register_edma(da850_edma_rsv);
405 if (ret)
406 pr_warn("%s: EDMA registration failed: %d\n", __func__, ret);
407
408 omapl138_hawk_mmc_init();
409
410 omapl138_hawk_usb_init();
411
412 ret = omapl138_hawk_register_aemif();
413 if (ret)
414 pr_warn("%s: aemif registration failed: %d\n", __func__, ret);
415
416 ret = da8xx_register_watchdog();
417 if (ret)
418 pr_warn("%s: watchdog registration failed: %d\n",
419 __func__, ret);
420
421 ret = da8xx_register_rproc();
422 if (ret)
423 pr_warn("%s: dsp/rproc registration failed: %d\n",
424 __func__, ret);
425
426 regulator_has_full_constraints();
427 }
428
429 #ifdef CONFIG_SERIAL_8250_CONSOLE
omapl138_hawk_console_init(void)430 static int __init omapl138_hawk_console_init(void)
431 {
432 if (!machine_is_omapl138_hawkboard())
433 return 0;
434
435 return add_preferred_console("ttyS", 2, "115200");
436 }
437 console_initcall(omapl138_hawk_console_init);
438 #endif
439
omapl138_hawk_map_io(void)440 static void __init omapl138_hawk_map_io(void)
441 {
442 da850_init();
443 }
444
445 MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
446 .atag_offset = 0x100,
447 .map_io = omapl138_hawk_map_io,
448 .init_irq = da850_init_irq,
449 .init_time = da850_init_time,
450 .init_machine = omapl138_hawk_init,
451 .init_late = davinci_init_late,
452 .dma_zone_size = SZ_128M,
453 .reserve = da8xx_rproc_reserve_cma,
454 MACHINE_END
455