1 /* 2 * linux/arch/arm/mach-omap1/board-osk.c 3 * 4 * Board specific init for OMAP5912 OSK 5 * 6 * Written by Dirk Behme <dirk.behme@de.bosch.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 * You should have received a copy of the GNU General Public License along 25 * with this program; if not, write to the Free Software Foundation, Inc., 26 * 675 Mass Ave, Cambridge, MA 02139, USA. 27 */ 28 #include <linux/gpio.h> 29 #include <linux/gpio/machine.h> 30 #include <linux/kernel.h> 31 #include <linux/init.h> 32 #include <linux/platform_device.h> 33 #include <linux/interrupt.h> 34 #include <linux/irq.h> 35 #include <linux/i2c.h> 36 #include <linux/leds.h> 37 #include <linux/smc91x.h> 38 #include <linux/omapfb.h> 39 #include <linux/mtd/mtd.h> 40 #include <linux/mtd/partitions.h> 41 #include <linux/mtd/physmap.h> 42 #include <linux/mfd/tps65010.h> 43 #include <linux/platform_data/gpio-omap.h> 44 #include <linux/platform_data/omap1_bl.h> 45 #include <linux/soc/ti/omap1-io.h> 46 47 #include <asm/mach-types.h> 48 #include <asm/mach/arch.h> 49 #include <asm/mach/map.h> 50 51 #include "tc.h" 52 #include "flash.h" 53 #include "mux.h" 54 #include "hardware.h" 55 #include "usb.h" 56 #include "common.h" 57 58 /* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */ 59 #define OMAP_GPIO_LABEL "gpio-0-15" 60 61 /* At OMAP5912 OSK the Ethernet is directly connected to CS1 */ 62 #define OMAP_OSK_ETHR_START 0x04800300 63 64 /* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with 65 * alternate pin configurations for hardware-controlled blinking. 66 */ 67 #define OSK_TPS_GPIO_BASE (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */) 68 # define OSK_TPS_GPIO_USB_PWR_EN (OSK_TPS_GPIO_BASE + 0) 69 # define OSK_TPS_GPIO_LED_D3 (OSK_TPS_GPIO_BASE + 1) 70 # define OSK_TPS_GPIO_LAN_RESET (OSK_TPS_GPIO_BASE + 2) 71 # define OSK_TPS_GPIO_DSP_PWR_EN (OSK_TPS_GPIO_BASE + 3) 72 # define OSK_TPS_GPIO_LED_D9 (OSK_TPS_GPIO_BASE + 4) 73 # define OSK_TPS_GPIO_LED_D2 (OSK_TPS_GPIO_BASE + 5) 74 75 static struct mtd_partition osk_partitions[] = { 76 /* bootloader (U-Boot, etc) in first sector */ 77 { 78 .name = "bootloader", 79 .offset = 0, 80 .size = SZ_128K, 81 .mask_flags = MTD_WRITEABLE, /* force read-only */ 82 }, 83 /* bootloader params in the next sector */ 84 { 85 .name = "params", 86 .offset = MTDPART_OFS_APPEND, 87 .size = SZ_128K, 88 .mask_flags = 0, 89 }, { 90 .name = "kernel", 91 .offset = MTDPART_OFS_APPEND, 92 .size = SZ_2M, 93 .mask_flags = 0 94 }, { 95 .name = "filesystem", 96 .offset = MTDPART_OFS_APPEND, 97 .size = MTDPART_SIZ_FULL, 98 .mask_flags = 0 99 } 100 }; 101 102 static struct physmap_flash_data osk_flash_data = { 103 .width = 2, 104 .set_vpp = omap1_set_vpp, 105 .parts = osk_partitions, 106 .nr_parts = ARRAY_SIZE(osk_partitions), 107 }; 108 109 static struct resource osk_flash_resource = { 110 /* this is on CS3, wherever it's mapped */ 111 .flags = IORESOURCE_MEM, 112 }; 113 114 static struct platform_device osk5912_flash_device = { 115 .name = "physmap-flash", 116 .id = 0, 117 .dev = { 118 .platform_data = &osk_flash_data, 119 }, 120 .num_resources = 1, 121 .resource = &osk_flash_resource, 122 }; 123 124 static struct smc91x_platdata osk5912_smc91x_info = { 125 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT, 126 .leda = RPC_LED_100_10, 127 .ledb = RPC_LED_TX_RX, 128 }; 129 130 static struct resource osk5912_smc91x_resources[] = { 131 [0] = { 132 .start = OMAP_OSK_ETHR_START, /* Physical */ 133 .end = OMAP_OSK_ETHR_START + 0xf, 134 .flags = IORESOURCE_MEM, 135 }, 136 [1] = { 137 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, 138 }, 139 }; 140 141 static struct platform_device osk5912_smc91x_device = { 142 .name = "smc91x", 143 .id = -1, 144 .dev = { 145 .platform_data = &osk5912_smc91x_info, 146 }, 147 .num_resources = ARRAY_SIZE(osk5912_smc91x_resources), 148 .resource = osk5912_smc91x_resources, 149 }; 150 151 static struct resource osk5912_cf_resources[] = { 152 [0] = { 153 .flags = IORESOURCE_IRQ, 154 }, 155 [1] = { 156 .flags = IORESOURCE_MEM, 157 }, 158 }; 159 160 static struct platform_device osk5912_cf_device = { 161 .name = "omap_cf", 162 .id = -1, 163 .num_resources = ARRAY_SIZE(osk5912_cf_resources), 164 .resource = osk5912_cf_resources, 165 }; 166 167 static struct platform_device *osk5912_devices[] __initdata = { 168 &osk5912_flash_device, 169 &osk5912_smc91x_device, 170 &osk5912_cf_device, 171 }; 172 173 static const struct gpio_led tps_leds[] = { 174 /* NOTE: D9 and D2 have hardware blink support. 175 * Also, D9 requires non-battery power. 176 */ 177 { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9", 178 .default_trigger = "disk-activity", }, 179 { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", }, 180 { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1, 181 .default_trigger = "heartbeat", }, 182 }; 183 184 static struct gpio_led_platform_data tps_leds_data = { 185 .num_leds = 3, 186 .leds = tps_leds, 187 }; 188 189 static struct platform_device osk5912_tps_leds = { 190 .name = "leds-gpio", 191 .id = 0, 192 .dev.platform_data = &tps_leds_data, 193 }; 194 195 static int osk_tps_setup(struct i2c_client *client, void *context) 196 { 197 if (!IS_BUILTIN(CONFIG_TPS65010)) 198 return -ENOSYS; 199 200 /* Set GPIO 1 HIGH to disable VBUS power supply; 201 * OHCI driver powers it up/down as needed. 202 */ 203 gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en"); 204 gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1); 205 /* Free the GPIO again as the driver will request it */ 206 gpio_free(OSK_TPS_GPIO_USB_PWR_EN); 207 208 /* Set GPIO 2 high so LED D3 is off by default */ 209 tps65010_set_gpio_out_value(GPIO2, HIGH); 210 211 /* Set GPIO 3 low to take ethernet out of reset */ 212 gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset"); 213 gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0); 214 215 /* GPIO4 is VDD_DSP */ 216 gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power"); 217 gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1); 218 /* REVISIT if DSP support isn't configured, power it off ... */ 219 220 /* Let LED1 (D9) blink; leds-gpio may override it */ 221 tps65010_set_led(LED1, BLINK); 222 223 /* Set LED2 off by default */ 224 tps65010_set_led(LED2, OFF); 225 226 /* Enable LOW_PWR handshake */ 227 tps65010_set_low_pwr(ON); 228 229 /* Switch VLDO2 to 3.0V for AIC23 */ 230 tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V 231 | TPS_LDO1_ENABLE); 232 233 /* register these three LEDs */ 234 osk5912_tps_leds.dev.parent = &client->dev; 235 platform_device_register(&osk5912_tps_leds); 236 237 return 0; 238 } 239 240 static struct tps65010_board tps_board = { 241 .base = OSK_TPS_GPIO_BASE, 242 .outmask = 0x0f, 243 .setup = osk_tps_setup, 244 }; 245 246 static struct i2c_board_info __initdata osk_i2c_board_info[] = { 247 { 248 /* This device will get the name "i2c-tps65010" */ 249 I2C_BOARD_INFO("tps65010", 0x48), 250 .dev_name = "tps65010", 251 .platform_data = &tps_board, 252 253 }, 254 { 255 I2C_BOARD_INFO("tlv320aic23", 0x1B), 256 }, 257 /* TODO when driver support is ready: 258 * - optionally on Mistral, ov9640 camera sensor at 0x30 259 */ 260 }; 261 262 static void __init osk_init_smc91x(void) 263 { 264 u32 l; 265 266 if ((gpio_request(0, "smc_irq")) < 0) { 267 printk("Error requesting gpio 0 for smc91x irq\n"); 268 return; 269 } 270 271 /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */ 272 l = omap_readl(EMIFS_CCS(1)); 273 l |= 0x3; 274 omap_writel(l, EMIFS_CCS(1)); 275 } 276 277 static void __init osk_init_cf(int seg) 278 { 279 struct resource *res = &osk5912_cf_resources[1]; 280 281 omap_cfg_reg(M7_1610_GPIO62); 282 if ((gpio_request(62, "cf_irq")) < 0) { 283 printk("Error requesting gpio 62 for CF irq\n"); 284 return; 285 } 286 287 switch (seg) { 288 /* NOTE: CS0 could be configured too ... */ 289 case 1: 290 res->start = OMAP_CS1_PHYS; 291 break; 292 case 2: 293 res->start = OMAP_CS2_PHYS; 294 break; 295 case 3: 296 res->start = omap_cs3_phys(); 297 break; 298 } 299 300 res->end = res->start + SZ_8K - 1; 301 osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg; 302 303 /* NOTE: better EMIFS setup might support more cards; but the 304 * TRM only shows how to affect regular flash signals, not their 305 * CF/PCMCIA variants... 306 */ 307 pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__, 308 seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg))); 309 omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */ 310 omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */ 311 312 /* the CF I/O IRQ is really active-low */ 313 irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING); 314 } 315 316 static struct gpiod_lookup_table osk_usb_gpio_table = { 317 .dev_id = "ohci", 318 .table = { 319 /* Power GPIO on the I2C-attached TPS65010 */ 320 GPIO_LOOKUP("tps65010", 0, "power", GPIO_ACTIVE_HIGH), 321 GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent", 322 GPIO_ACTIVE_HIGH), 323 }, 324 }; 325 326 static struct omap_usb_config osk_usb_config __initdata = { 327 /* has usb host connector (A) ... for development it can also 328 * be used, with a NONSTANDARD gender-bending cable/dongle, as 329 * a peripheral. 330 */ 331 #if IS_ENABLED(CONFIG_USB_OMAP) 332 .register_dev = 1, 333 .hmc_mode = 0, 334 #else 335 .register_host = 1, 336 .hmc_mode = 16, 337 .rwc = 1, 338 #endif 339 .pins[0] = 2, 340 }; 341 342 #define EMIFS_CS3_VAL (0x88013141) 343 344 static void __init osk_init(void) 345 { 346 u32 l; 347 348 osk_init_smc91x(); 349 osk_init_cf(2); /* CS2 */ 350 351 /* Workaround for wrong CS3 (NOR flash) timing 352 * There are some U-Boot versions out there which configure 353 * wrong CS3 memory timings. This mainly leads to CRC 354 * or similar errors if you use NOR flash (e.g. with JFFS2) 355 */ 356 l = omap_readl(EMIFS_CCS(3)); 357 if (l != EMIFS_CS3_VAL) 358 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3)); 359 360 osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys(); 361 osk_flash_resource.end += SZ_32M - 1; 362 osk5912_smc91x_resources[1].start = gpio_to_irq(0); 363 osk5912_smc91x_resources[1].end = gpio_to_irq(0); 364 osk5912_cf_resources[0].start = gpio_to_irq(62); 365 osk5912_cf_resources[0].end = gpio_to_irq(62); 366 platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices)); 367 368 l = omap_readl(USB_TRANSCEIVER_CTRL); 369 l |= (3 << 1); 370 omap_writel(l, USB_TRANSCEIVER_CTRL); 371 372 gpiod_add_lookup_table(&osk_usb_gpio_table); 373 omap1_usb_init(&osk_usb_config); 374 375 /* irq for tps65010 chip */ 376 /* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */ 377 if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0) 378 gpio_direction_input(OMAP_MPUIO(1)); 379 380 omap_serial_init(); 381 osk_i2c_board_info[0].irq = gpio_to_irq(OMAP_MPUIO(1)); 382 omap_register_i2c_bus(1, 400, osk_i2c_board_info, 383 ARRAY_SIZE(osk_i2c_board_info)); 384 } 385 386 MACHINE_START(OMAP_OSK, "TI-OSK") 387 /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */ 388 .atag_offset = 0x100, 389 .map_io = omap1_map_io, 390 .init_early = omap1_init_early, 391 .init_irq = omap1_init_irq, 392 .handle_irq = omap1_handle_irq, 393 .init_machine = osk_init, 394 .init_late = omap1_init_late, 395 .init_time = omap1_timer_init, 396 .restart = omap1_restart, 397 MACHINE_END 398