arch/arm/mach-davinci/board-omapl138-hawk.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Hawkboard.org based on TI's OMAP-L138 Platform
   4  *
   5  * Initial code: Syed Mohammed Khasim
   6  *
   7  * Copyright (C) 2009 Texas Instruments Incorporated - https://www.ti.com
   8  */
   9 #include <linux/kernel.h>
  10 #include <linux/init.h>
  11 #include <linux/console.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/gpio.h>
  14 #include <linux/gpio/machine.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/mtd/rawnand.h>
  17 #include <linux/platform_data/gpio-davinci.h>
  18 #include <linux/platform_data/mtd-davinci.h>
  19 #include <linux/platform_data/mtd-davinci-aemif.h>
  20 #include <linux/platform_data/ti-aemif.h>
  21 #include <linux/regulator/fixed.h>
  22 #include <linux/regulator/machine.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26
  27 #include <mach/common.h>
  28 #include <mach/da8xx.h>
  29 #include <mach/mux.h>
  30
  31 #define HAWKBOARD_PHY_ID                "davinci_mdio-0:07"
  32
  33 #define DA850_USB1_VBUS_PIN             GPIO_TO_PIN(2, 4)
  34 #define DA850_USB1_OC_PIN               GPIO_TO_PIN(6, 13)
  35
  36 static short omapl138_hawk_mii_pins[] __initdata = {
  37         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
  38         DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
  39         DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
  40         DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
  41         DA850_MDIO_D,
  42         -1
  43 };
  44
  45 static __init void omapl138_hawk_config_emac(void)
  46 {
  47         void __iomem *cfgchip3 = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
  48         int ret;
  49         u32 val;
  50         struct davinci_soc_info *soc_info = &davinci_soc_info;
  51
  52         val = __raw_readl(cfgchip3);
  53         val &= ~BIT(8);
  54         ret = davinci_cfg_reg_list(omapl138_hawk_mii_pins);
  55         if (ret) {
  56                 pr_warn("%s: CPGMAC/MII mux setup failed: %d\n", __func__, ret);
  57                 return;
  58         }
  59
  60         /* configure the CFGCHIP3 register for MII */
  61         __raw_writel(val, cfgchip3);
  62         pr_info("EMAC: MII PHY configured\n");
  63
  64         soc_info->emac_pdata->phy_id = HAWKBOARD_PHY_ID;
  65
  66         ret = da8xx_register_emac();
  67         if (ret)
  68                 pr_warn("%s: EMAC registration failed: %d\n", __func__, ret);
  69 }
  70
  71 /*
  72  * The following EDMA channels/slots are not being used by drivers (for
  73  * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
  74  * hence they are being reserved for codecs on the DSP side.
  75  */
  76 static const s16 da850_dma0_rsv_chans[][2] = {
  77         /* (offset, number) */
  78         { 8,  6},
  79         {24,  4},
  80         {30,  2},
  81         {-1, -1}
  82 };
  83
  84 static const s16 da850_dma0_rsv_slots[][2] = {
  85         /* (offset, number) */
  86         { 8,  6},
  87         {24,  4},
  88         {30, 50},
  89         {-1, -1}
  90 };
  91
  92 static const s16 da850_dma1_rsv_chans[][2] = {
  93         /* (offset, number) */
  94         { 0, 28},
  95         {30,  2},
  96         {-1, -1}
  97 };
  98
  99 static const s16 da850_dma1_rsv_slots[][2] = {
 100         /* (offset, number) */
 101         { 0, 28},
 102         {30, 90},
 103         {-1, -1}
 104 };
 105
 106 static struct edma_rsv_info da850_edma_cc0_rsv = {
 107         .rsv_chans      = da850_dma0_rsv_chans,
 108         .rsv_slots      = da850_dma0_rsv_slots,
 109 };
 110
 111 static struct edma_rsv_info da850_edma_cc1_rsv = {
 112         .rsv_chans      = da850_dma1_rsv_chans,
 113         .rsv_slots      = da850_dma1_rsv_slots,
 114 };
 115
 116 static struct edma_rsv_info *da850_edma_rsv[2] = {
 117         &da850_edma_cc0_rsv,
 118         &da850_edma_cc1_rsv,
 119 };
 120
 121 static const short hawk_mmcsd0_pins[] = {
 122         DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2,
 123         DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD,
 124         DA850_GPIO3_12, DA850_GPIO3_13,
 125         -1
 126 };
 127
 128 #define DA850_HAWK_MMCSD_CD_PIN         GPIO_TO_PIN(3, 12)
 129 #define DA850_HAWK_MMCSD_WP_PIN         GPIO_TO_PIN(3, 13)
 130
 131 static struct gpiod_lookup_table mmc_gpios_table = {
 132         .dev_id = "da830-mmc.0",
 133         .table = {
 134                 GPIO_LOOKUP("davinci_gpio", DA850_HAWK_MMCSD_CD_PIN, "cd",
 135                             GPIO_ACTIVE_LOW),
 136                 GPIO_LOOKUP("davinci_gpio", DA850_HAWK_MMCSD_WP_PIN, "wp",
 137                             GPIO_ACTIVE_LOW),
 138         },
 139 };
 140
 141 static struct davinci_mmc_config da850_mmc_config = {
 142         .wires          = 4,
 143         .max_freq       = 50000000,
 144         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
 145 };
 146
 147 static __init void omapl138_hawk_mmc_init(void)
 148 {
 149         int ret;
 150
 151         ret = davinci_cfg_reg_list(hawk_mmcsd0_pins);
 152         if (ret) {
 153                 pr_warn("%s: MMC/SD0 mux setup failed: %d\n", __func__, ret);
 154                 return;
 155         }
 156
 157         gpiod_add_lookup_table(&mmc_gpios_table);
 158
 159         ret = da8xx_register_mmcsd0(&da850_mmc_config);
 160         if (ret) {
 161                 pr_warn("%s: MMC/SD0 registration failed: %d\n", __func__, ret);
 162                 goto mmc_setup_mmcsd_fail;
 163         }
 164
 165         return;
 166
 167 mmc_setup_mmcsd_fail:
 168         gpiod_remove_lookup_table(&mmc_gpios_table);
 169 }
 170
 171 static struct mtd_partition omapl138_hawk_nandflash_partition[] = {
 172         {
 173                 .name           = "u-boot env",
 174                 .offset         = 0,
 175                 .size           = SZ_128K,
 176                 .mask_flags     = MTD_WRITEABLE,
 177          },
 178         {
 179                 .name           = "u-boot",
 180                 .offset         = MTDPART_OFS_APPEND,
 181                 .size           = SZ_512K,
 182                 .mask_flags     = MTD_WRITEABLE,
 183         },
 184         {
 185                 .name           = "free space",
 186                 .offset         = MTDPART_OFS_APPEND,
 187                 .size           = MTDPART_SIZ_FULL,
 188                 .mask_flags     = 0,
 189         },
 190 };
 191
 192 static struct davinci_aemif_timing omapl138_hawk_nandflash_timing = {
 193         .wsetup         = 24,
 194         .wstrobe        = 21,
 195         .whold          = 14,
 196         .rsetup         = 19,
 197         .rstrobe        = 50,
 198         .rhold          = 0,
 199         .ta             = 20,
 200 };
 201
 202 static struct davinci_nand_pdata omapl138_hawk_nandflash_data = {
 203         .core_chipsel   = 1,
 204         .parts          = omapl138_hawk_nandflash_partition,
 205         .nr_parts       = ARRAY_SIZE(omapl138_hawk_nandflash_partition),
 206         .engine_type    = NAND_ECC_ENGINE_TYPE_ON_HOST,
 207         .ecc_bits       = 4,
 208         .bbt_options    = NAND_BBT_USE_FLASH,
 209         .options        = NAND_BUSWIDTH_16,
 210         .timing         = &omapl138_hawk_nandflash_timing,
 211         .mask_chipsel   = 0,
 212         .mask_ale       = 0,
 213         .mask_cle       = 0,
 214 };
 215
 216 static struct resource omapl138_hawk_nandflash_resource[] = {
 217         {
 218                 .start  = DA8XX_AEMIF_CS3_BASE,
 219                 .end    = DA8XX_AEMIF_CS3_BASE + SZ_32M,
 220                 .flags  = IORESOURCE_MEM,
 221         },
 222         {
 223                 .start  = DA8XX_AEMIF_CTL_BASE,
 224                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K,
 225                 .flags  = IORESOURCE_MEM,
 226         },
 227 };
 228
 229 static struct resource omapl138_hawk_aemif_resource[] = {
 230         {
 231                 .start  = DA8XX_AEMIF_CTL_BASE,
 232                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K,
 233                 .flags  = IORESOURCE_MEM,
 234         }
 235 };
 236
 237 static struct aemif_abus_data omapl138_hawk_aemif_abus_data[] = {
 238         {
 239                 .cs     = 3,
 240         }
 241 };
 242
 243 static struct platform_device omapl138_hawk_aemif_devices[] = {
 244         {
 245                 .name           = "davinci_nand",
 246                 .id             = -1,
 247                 .dev            = {
 248                         .platform_data  = &omapl138_hawk_nandflash_data,
 249                 },
 250                 .resource       = omapl138_hawk_nandflash_resource,
 251                 .num_resources  = ARRAY_SIZE(omapl138_hawk_nandflash_resource),
 252         }
 253 };
 254
 255 static struct aemif_platform_data omapl138_hawk_aemif_pdata = {
 256         .cs_offset = 2,
 257         .abus_data = omapl138_hawk_aemif_abus_data,
 258         .num_abus_data = ARRAY_SIZE(omapl138_hawk_aemif_abus_data),
 259         .sub_devices = omapl138_hawk_aemif_devices,
 260         .num_sub_devices = ARRAY_SIZE(omapl138_hawk_aemif_devices),
 261 };
 262
 263 static struct platform_device omapl138_hawk_aemif_device = {
 264         .name           = "ti-aemif",
 265         .id             = -1,
 266         .dev = {
 267                 .platform_data  = &omapl138_hawk_aemif_pdata,
 268         },
 269         .resource       = omapl138_hawk_aemif_resource,
 270         .num_resources  = ARRAY_SIZE(omapl138_hawk_aemif_resource),
 271 };
 272
 273 static const short omapl138_hawk_nand_pins[] = {
 274         DA850_EMA_WAIT_1, DA850_NEMA_OE, DA850_NEMA_WE, DA850_NEMA_CS_3,
 275         DA850_EMA_D_0, DA850_EMA_D_1, DA850_EMA_D_2, DA850_EMA_D_3,
 276         DA850_EMA_D_4, DA850_EMA_D_5, DA850_EMA_D_6, DA850_EMA_D_7,
 277         DA850_EMA_D_8, DA850_EMA_D_9, DA850_EMA_D_10, DA850_EMA_D_11,
 278         DA850_EMA_D_12, DA850_EMA_D_13, DA850_EMA_D_14, DA850_EMA_D_15,
 279         DA850_EMA_A_1, DA850_EMA_A_2,
 280         -1
 281 };
 282
 283 static int omapl138_hawk_register_aemif(void)
 284 {
 285         int ret;
 286
 287         ret = davinci_cfg_reg_list(omapl138_hawk_nand_pins);
 288         if (ret)
 289                 pr_warn("%s: NAND mux setup failed: %d\n", __func__, ret);
 290
 291         return platform_device_register(&omapl138_hawk_aemif_device);
 292 }
 293
 294 static const short da850_hawk_usb11_pins[] = {
 295         DA850_GPIO2_4, DA850_GPIO6_13,
 296         -1
 297 };
 298
 299 static struct regulator_consumer_supply hawk_usb_supplies[] = {
 300         REGULATOR_SUPPLY("vbus", NULL),
 301 };
 302
 303 static struct regulator_init_data hawk_usb_vbus_data = {
 304         .consumer_supplies      = hawk_usb_supplies,
 305         .num_consumer_supplies  = ARRAY_SIZE(hawk_usb_supplies),
 306         .constraints    = {
 307                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 308         },
 309 };
 310
 311 static struct fixed_voltage_config hawk_usb_vbus = {
 312         .supply_name            = "vbus",
 313         .microvolts             = 3300000,
 314         .init_data              = &hawk_usb_vbus_data,
 315 };
 316
 317 static struct platform_device hawk_usb_vbus_device = {
 318         .name           = "reg-fixed-voltage",
 319         .id             = 0,
 320         .dev            = {
 321                 .platform_data = &hawk_usb_vbus,
 322         },
 323 };
 324
 325 static struct gpiod_lookup_table hawk_usb_oc_gpio_lookup = {
 326         .dev_id         = "ohci-da8xx",
 327         .table = {
 328                 GPIO_LOOKUP("davinci_gpio", DA850_USB1_OC_PIN, "oc", 0),
 329                 { }
 330         },
 331 };
 332
 333 static struct gpiod_lookup_table hawk_usb_vbus_gpio_lookup = {
 334         .dev_id         = "reg-fixed-voltage.0",
 335         .table = {
 336                 GPIO_LOOKUP("davinci_gpio", DA850_USB1_VBUS_PIN, NULL, 0),
 337                 { }
 338         },
 339 };
 340
 341 static struct gpiod_lookup_table *hawk_usb_gpio_lookups[] = {
 342         &hawk_usb_oc_gpio_lookup,
 343         &hawk_usb_vbus_gpio_lookup,
 344 };
 345
 346 static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
 347         /* TPS2087 switch @ 5V */
 348         .potpgt         = (3 + 1) / 2,  /* 3 ms max */
 349 };
 350
 351 static __init void omapl138_hawk_usb_init(void)
 352 {
 353         int ret;
 354
 355         ret = davinci_cfg_reg_list(da850_hawk_usb11_pins);
 356         if (ret) {
 357                 pr_warn("%s: USB 1.1 PinMux setup failed: %d\n", __func__, ret);
 358                 return;
 359         }
 360
 361         ret = da8xx_register_usb_phy_clocks();
 362         if (ret)
 363                 pr_warn("%s: USB PHY CLK registration failed: %d\n",
 364                         __func__, ret);
 365
 366         gpiod_add_lookup_tables(hawk_usb_gpio_lookups,
 367                                 ARRAY_SIZE(hawk_usb_gpio_lookups));
 368
 369         ret = da8xx_register_usb_phy();
 370         if (ret)
 371                 pr_warn("%s: USB PHY registration failed: %d\n",
 372                         __func__, ret);
 373
 374         ret = platform_device_register(&hawk_usb_vbus_device);
 375         if (ret) {
 376                 pr_warn("%s: Unable to register the vbus supply\n", __func__);
 377                 return;
 378         }
 379
 380         ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
 381         if (ret)
 382                 pr_warn("%s: USB 1.1 registration failed: %d\n", __func__, ret);
 383
 384         return;
 385 }
 386
 387 static __init void omapl138_hawk_init(void)
 388 {
 389         int ret;
 390
 391         da850_register_clocks();
 392
 393         ret = da850_register_gpio();
 394         if (ret)
 395                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 396
 397         davinci_serial_init(da8xx_serial_device);
 398
 399         omapl138_hawk_config_emac();
 400
 401         ret = da850_register_edma(da850_edma_rsv);
 402         if (ret)
 403                 pr_warn("%s: EDMA registration failed: %d\n", __func__, ret);
 404
 405         omapl138_hawk_mmc_init();
 406
 407         omapl138_hawk_usb_init();
 408
 409         ret = omapl138_hawk_register_aemif();
 410         if (ret)
 411                 pr_warn("%s: aemif registration failed: %d\n", __func__, ret);
 412
 413         ret = da8xx_register_watchdog();
 414         if (ret)
 415                 pr_warn("%s: watchdog registration failed: %d\n",
 416                         __func__, ret);
 417
 418         ret = da8xx_register_rproc();
 419         if (ret)
 420                 pr_warn("%s: dsp/rproc registration failed: %d\n",
 421                         __func__, ret);
 422
 423         regulator_has_full_constraints();
 424 }
 425
 426 #ifdef CONFIG_SERIAL_8250_CONSOLE
 427 static int __init omapl138_hawk_console_init(void)
 428 {
 429         if (!machine_is_omapl138_hawkboard())
 430                 return 0;
 431
 432         return add_preferred_console("ttyS", 2, "115200");
 433 }
 434 console_initcall(omapl138_hawk_console_init);
 435 #endif
 436
 437 static void __init omapl138_hawk_map_io(void)
 438 {
 439         da850_init();
 440 }
 441
 442 MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
 443         .atag_offset    = 0x100,
 444         .map_io         = omapl138_hawk_map_io,
 445         .init_irq       = da850_init_irq,
 446         .init_time      = da850_init_time,
 447         .init_machine   = omapl138_hawk_init,
 448         .init_late      = davinci_init_late,
 449         .dma_zone_size  = SZ_128M,
 450         .reserve        = da8xx_rproc_reserve_cma,
 451 MACHINE_END