arch/arm/mach-omap2/pdata-quirks.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Legacy platform_data quirks
   4  *
   5  * Copyright (C) 2013 Texas Instruments
   6  */
   7 #include <linux/clk.h>
   8 #include <linux/davinci_emac.h>
   9 #include <linux/gpio/machine.h>
  10 #include <linux/gpio/consumer.h>
  11 #include <linux/gpio.h>
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/of_platform.h>
  15 #include <linux/mmc/card.h>
  16 #include <linux/mmc/host.h>
  17 #include <linux/power/smartreflex.h>
  18 #include <linux/regulator/machine.h>
  19 #include <linux/regulator/fixed.h>
  20
  21 #include <linux/platform_data/pinctrl-single.h>
  22 #include <linux/platform_data/hsmmc-omap.h>
  23 #include <linux/platform_data/iommu-omap.h>
  24 #include <linux/platform_data/ti-sysc.h>
  25 #include <linux/platform_data/wkup_m3.h>
  26 #include <linux/platform_data/asoc-ti-mcbsp.h>
  27 #include <linux/platform_data/ti-prm.h>
  28
  29 #include "clockdomain.h"
  30 #include "common.h"
  31 #include "common-board-devices.h"
  32 #include "control.h"
  33 #include "omap_device.h"
  34 #include "omap-secure.h"
  35 #include "soc.h"
  36
  37 static struct omap_hsmmc_platform_data __maybe_unused mmc_pdata[2];
  38
  39 struct pdata_init {
  40         const char *compatible;
  41         void (*fn)(void);
  42 };
  43
  44 static struct of_dev_auxdata omap_auxdata_lookup[];
  45
  46 #ifdef CONFIG_MACH_NOKIA_N8X0
  47 static void __init omap2420_n8x0_legacy_init(void)
  48 {
  49         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  50 }
  51 #else
  52 #define omap2420_n8x0_legacy_init       NULL
  53 #endif
  54
  55 #ifdef CONFIG_ARCH_OMAP3
  56 /*
  57  * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
  58  * mode for MMC1 in case bootloader did not configure things.
  59  * Note that if the pins are used for MMC1, pbias-regulator
  60  * manages the IO voltage.
  61  */
  62 static void __init omap3_gpio126_127_129(void)
  63 {
  64         u32 reg;
  65
  66         reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
  67         reg &= ~OMAP343X_PBIASLITEVMODE1;
  68         reg |= OMAP343X_PBIASLITEPWRDNZ1;
  69         omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
  70         if (cpu_is_omap3630()) {
  71                 reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
  72                 reg |= OMAP36XX_GPIO_IO_PWRDNZ;
  73                 omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
  74         }
  75 }
  76
  77 static void __init hsmmc2_internal_input_clk(void)
  78 {
  79         u32 reg;
  80
  81         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  82         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  83         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  84 }
  85
  86 #ifdef CONFIG_OMAP_HWMOD
  87 static struct iommu_platform_data omap3_iommu_pdata = {
  88         .reset_name = "mmu",
  89         .assert_reset = omap_device_assert_hardreset,
  90         .deassert_reset = omap_device_deassert_hardreset,
  91         .device_enable = omap_device_enable,
  92         .device_idle = omap_device_idle,
  93 };
  94
  95 static struct iommu_platform_data omap3_iommu_isp_pdata = {
  96         .device_enable = omap_device_enable,
  97         .device_idle = omap_device_idle,
  98 };
  99 #endif
 100
 101 static void __init omap3_sbc_t3x_usb_hub_init(char *hub_name, int idx)
 102 {
 103         struct gpio_desc *d;
 104
 105         /* This asserts the RESET line (reverse polarity) */
 106         d = gpiod_get_index(NULL, "reset", idx, GPIOD_OUT_HIGH);
 107         if (IS_ERR(d)) {
 108                 pr_err("Unable to get T3x USB reset GPIO descriptor\n");
 109                 return;
 110         }
 111         gpiod_set_consumer_name(d, hub_name);
 112         gpiod_export(d, 0);
 113         udelay(10);
 114         /* De-assert RESET */
 115         gpiod_set_value(d, 0);
 116         msleep(1);
 117 }
 118
 119 static struct gpiod_lookup_table omap3_sbc_t3x_usb_gpio_table = {
 120         .dev_id = NULL,
 121         .table = {
 122                 GPIO_LOOKUP_IDX("gpio-160-175", 7, "reset", 0,
 123                                 GPIO_ACTIVE_LOW),
 124                 { }
 125         },
 126 };
 127
 128 static void __init omap3_sbc_t3730_legacy_init(void)
 129 {
 130         gpiod_add_lookup_table(&omap3_sbc_t3x_usb_gpio_table);
 131         omap3_sbc_t3x_usb_hub_init("sb-t35 usb hub", 0);
 132 }
 133
 134 static void __init omap3_sbc_t3530_legacy_init(void)
 135 {
 136         gpiod_add_lookup_table(&omap3_sbc_t3x_usb_gpio_table);
 137         omap3_sbc_t3x_usb_hub_init("sb-t35 usb hub", 0);
 138 }
 139
 140 static void __init omap3_evm_legacy_init(void)
 141 {
 142         hsmmc2_internal_input_clk();
 143 }
 144
 145 static void am35xx_enable_emac_int(void)
 146 {
 147         u32 v;
 148
 149         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 150         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 151               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 152         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 153         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 154 }
 155
 156 static void am35xx_disable_emac_int(void)
 157 {
 158         u32 v;
 159
 160         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 161         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
 162         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 163         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 164 }
 165
 166 static struct emac_platform_data am35xx_emac_pdata = {
 167         .interrupt_enable       = am35xx_enable_emac_int,
 168         .interrupt_disable      = am35xx_disable_emac_int,
 169 };
 170
 171 static void __init am35xx_emac_reset(void)
 172 {
 173         u32 v;
 174
 175         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 176         v &= ~AM35XX_CPGMACSS_SW_RST;
 177         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 178         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 179 }
 180
 181 static struct gpio cm_t3517_wlan_gpios[] __initdata = {
 182         { 56,   GPIOF_OUT_INIT_HIGH,    "wlan pwr" },
 183         { 4,    GPIOF_OUT_INIT_HIGH,    "xcvr noe" },
 184 };
 185
 186 static void __init omap3_sbc_t3517_wifi_init(void)
 187 {
 188         int err = gpio_request_array(cm_t3517_wlan_gpios,
 189                                 ARRAY_SIZE(cm_t3517_wlan_gpios));
 190         if (err) {
 191                 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
 192                 return;
 193         }
 194
 195         gpiod_export(gpio_to_desc(cm_t3517_wlan_gpios[0].gpio), 0);
 196         gpiod_export(gpio_to_desc(cm_t3517_wlan_gpios[1].gpio), 0);
 197
 198         msleep(100);
 199         gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
 200 }
 201
 202 static struct gpiod_lookup_table omap3_sbc_t3517_usb_gpio_table = {
 203         .dev_id = NULL,
 204         .table = {
 205                 GPIO_LOOKUP_IDX("gpio-144-159", 8, "reset", 0,
 206                                 GPIO_ACTIVE_LOW),
 207                 GPIO_LOOKUP_IDX("gpio-96-111", 2, "reset", 1,
 208                                 GPIO_ACTIVE_LOW),
 209                 { }
 210         },
 211 };
 212
 213 static void __init omap3_sbc_t3517_legacy_init(void)
 214 {
 215         gpiod_add_lookup_table(&omap3_sbc_t3517_usb_gpio_table);
 216         omap3_sbc_t3x_usb_hub_init("cm-t3517 usb hub", 0);
 217         omap3_sbc_t3x_usb_hub_init("sb-t35 usb hub", 1);
 218         am35xx_emac_reset();
 219         hsmmc2_internal_input_clk();
 220         omap3_sbc_t3517_wifi_init();
 221 }
 222
 223 static void __init am3517_evm_legacy_init(void)
 224 {
 225         am35xx_emac_reset();
 226 }
 227
 228 static void __init nokia_n900_legacy_init(void)
 229 {
 230         hsmmc2_internal_input_clk();
 231         mmc_pdata[0].name = "external";
 232         mmc_pdata[1].name = "internal";
 233
 234         if (omap_type() != OMAP2_DEVICE_TYPE_GP) {
 235                 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
 236                         pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
 237                         /* set IBE to 1 */
 238                         rx51_secure_update_aux_cr(BIT(6), 0);
 239                 } else {
 240                         pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
 241                         pr_warn("Thumb binaries may crash randomly without this workaround\n");
 242                 }
 243         }
 244 }
 245
 246 static void __init omap3_tao3530_legacy_init(void)
 247 {
 248         hsmmc2_internal_input_clk();
 249 }
 250
 251 static void __init omap3_logicpd_torpedo_init(void)
 252 {
 253         omap3_gpio126_127_129();
 254 }
 255
 256 /* omap3pandora legacy devices */
 257
 258 static struct platform_device pandora_backlight = {
 259         .name   = "pandora-backlight",
 260         .id     = -1,
 261 };
 262
 263 static void __init omap3_pandora_legacy_init(void)
 264 {
 265         platform_device_register(&pandora_backlight);
 266 }
 267 #endif /* CONFIG_ARCH_OMAP3 */
 268
 269 #ifdef CONFIG_SOC_DRA7XX
 270 static struct iommu_platform_data dra7_ipu1_dsp_iommu_pdata = {
 271         .set_pwrdm_constraint = omap_iommu_set_pwrdm_constraint,
 272 };
 273 #endif
 274
 275 static struct clockdomain *ti_sysc_find_one_clockdomain(struct clk *clk)
 276 {
 277         struct clk_hw *hw = __clk_get_hw(clk);
 278         struct clockdomain *clkdm = NULL;
 279         struct clk_hw_omap *hwclk;
 280
 281         hwclk = to_clk_hw_omap(hw);
 282         if (!omap2_clk_is_hw_omap(hw))
 283                 return NULL;
 284
 285         if (hwclk && hwclk->clkdm_name)
 286                 clkdm = clkdm_lookup(hwclk->clkdm_name);
 287
 288         return clkdm;
 289 }
 290
 291 /**
 292  * ti_sysc_clkdm_init - find clockdomain based on clock
 293  * @fck: device functional clock
 294  * @ick: device interface clock
 295  * @dev: struct device
 296  *
 297  * Populate clockdomain based on clock. It is needed for
 298  * clkdm_deny_idle() and clkdm_allow_idle() for blocking clockdomain
 299  * clockdomain idle during reset, enable and idle.
 300  *
 301  * Note that we assume interconnect driver manages the clocks
 302  * and do not need to populate oh->_clk for dynamically
 303  * allocated modules.
 304  */
 305 static int ti_sysc_clkdm_init(struct device *dev,
 306                               struct clk *fck, struct clk *ick,
 307                               struct ti_sysc_cookie *cookie)
 308 {
 309         if (!IS_ERR(fck))
 310                 cookie->clkdm = ti_sysc_find_one_clockdomain(fck);
 311         if (cookie->clkdm)
 312                 return 0;
 313         if (!IS_ERR(ick))
 314                 cookie->clkdm = ti_sysc_find_one_clockdomain(ick);
 315         if (cookie->clkdm)
 316                 return 0;
 317
 318         return -ENODEV;
 319 }
 320
 321 static void ti_sysc_clkdm_deny_idle(struct device *dev,
 322                                     const struct ti_sysc_cookie *cookie)
 323 {
 324         if (cookie->clkdm)
 325                 clkdm_deny_idle(cookie->clkdm);
 326 }
 327
 328 static void ti_sysc_clkdm_allow_idle(struct device *dev,
 329                                      const struct ti_sysc_cookie *cookie)
 330 {
 331         if (cookie->clkdm)
 332                 clkdm_allow_idle(cookie->clkdm);
 333 }
 334
 335 #ifdef CONFIG_OMAP_HWMOD
 336 static int ti_sysc_enable_module(struct device *dev,
 337                                  const struct ti_sysc_cookie *cookie)
 338 {
 339         if (!cookie->data)
 340                 return -EINVAL;
 341
 342         return omap_hwmod_enable(cookie->data);
 343 }
 344
 345 static int ti_sysc_idle_module(struct device *dev,
 346                                const struct ti_sysc_cookie *cookie)
 347 {
 348         if (!cookie->data)
 349                 return -EINVAL;
 350
 351         return omap_hwmod_idle(cookie->data);
 352 }
 353
 354 static int ti_sysc_shutdown_module(struct device *dev,
 355                                    const struct ti_sysc_cookie *cookie)
 356 {
 357         if (!cookie->data)
 358                 return -EINVAL;
 359
 360         return omap_hwmod_shutdown(cookie->data);
 361 }
 362 #endif  /* CONFIG_OMAP_HWMOD */
 363
 364 static bool ti_sysc_soc_type_gp(void)
 365 {
 366         return omap_type() == OMAP2_DEVICE_TYPE_GP;
 367 }
 368
 369 static struct of_dev_auxdata omap_auxdata_lookup[];
 370
 371 static struct ti_sysc_platform_data ti_sysc_pdata = {
 372         .auxdata = omap_auxdata_lookup,
 373         .soc_type_gp = ti_sysc_soc_type_gp,
 374         .init_clockdomain = ti_sysc_clkdm_init,
 375         .clkdm_deny_idle = ti_sysc_clkdm_deny_idle,
 376         .clkdm_allow_idle = ti_sysc_clkdm_allow_idle,
 377 #ifdef CONFIG_OMAP_HWMOD
 378         .init_module = omap_hwmod_init_module,
 379         .enable_module = ti_sysc_enable_module,
 380         .idle_module = ti_sysc_idle_module,
 381         .shutdown_module = ti_sysc_shutdown_module,
 382 #endif
 383 };
 384
 385 static struct pcs_pdata pcs_pdata;
 386
 387 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 388 {
 389         pcs_pdata.irq = irq;
 390         pcs_pdata.rearm = rearm;
 391 }
 392
 393 static struct ti_prm_platform_data ti_prm_pdata = {
 394         .clkdm_deny_idle = clkdm_deny_idle,
 395         .clkdm_allow_idle = clkdm_allow_idle,
 396         .clkdm_lookup = clkdm_lookup,
 397 };
 398
 399 #if defined(CONFIG_ARCH_OMAP3) && IS_ENABLED(CONFIG_SND_SOC_OMAP_MCBSP)
 400 static struct omap_mcbsp_platform_data mcbsp_pdata;
 401 static void __init omap3_mcbsp_init(void)
 402 {
 403         omap3_mcbsp_init_pdata_callback(&mcbsp_pdata);
 404 }
 405 #else
 406 static void __init omap3_mcbsp_init(void) {}
 407 #endif
 408
 409 /*
 410  * Few boards still need auxdata populated before we populate
 411  * the dev entries in of_platform_populate().
 412  */
 413 static struct pdata_init auxdata_quirks[] __initdata = {
 414 #ifdef CONFIG_SOC_OMAP2420
 415         { "nokia,n800", omap2420_n8x0_legacy_init, },
 416         { "nokia,n810", omap2420_n8x0_legacy_init, },
 417         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 418 #endif
 419         { /* sentinel */ },
 420 };
 421
 422 struct omap_sr_data __maybe_unused omap_sr_pdata[OMAP_SR_NR];
 423
 424 static struct of_dev_auxdata omap_auxdata_lookup[] = {
 425 #ifdef CONFIG_MACH_NOKIA_N8X0
 426         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 427         OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
 428 #endif
 429 #ifdef CONFIG_ARCH_OMAP3
 430         OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 431                        &omap3_iommu_pdata),
 432         OF_DEV_AUXDATA("ti,omap2-iommu", 0x480bd400, "480bd400.mmu",
 433                        &omap3_iommu_isp_pdata),
 434         OF_DEV_AUXDATA("ti,omap3-smartreflex-core", 0x480cb000,
 435                        "480cb000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
 436         OF_DEV_AUXDATA("ti,omap3-smartreflex-mpu-iva", 0x480c9000,
 437                        "480c9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
 438         OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]),
 439         OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]),
 440         /* Only on am3517 */
 441         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 442         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 443                        &am35xx_emac_pdata),
 444         OF_DEV_AUXDATA("nokia,n900-rom-rng", 0, NULL, rx51_secure_rng_call),
 445         /* McBSP modules with sidetone core */
 446 #if IS_ENABLED(CONFIG_SND_SOC_OMAP_MCBSP)
 447         OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49022000, "49022000.mcbsp", &mcbsp_pdata),
 448         OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49024000, "49024000.mcbsp", &mcbsp_pdata),
 449 #endif
 450 #endif
 451 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 452         OF_DEV_AUXDATA("ti,omap4-smartreflex-iva", 0x4a0db000,
 453                        "4a0db000.smartreflex", &omap_sr_pdata[OMAP_SR_IVA]),
 454         OF_DEV_AUXDATA("ti,omap4-smartreflex-core", 0x4a0dd000,
 455                        "4a0dd000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
 456         OF_DEV_AUXDATA("ti,omap4-smartreflex-mpu", 0x4a0d9000,
 457                        "4a0d9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
 458 #endif
 459 #ifdef CONFIG_SOC_DRA7XX
 460         OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x40d01000, "40d01000.mmu",
 461                        &dra7_ipu1_dsp_iommu_pdata),
 462         OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x41501000, "41501000.mmu",
 463                        &dra7_ipu1_dsp_iommu_pdata),
 464         OF_DEV_AUXDATA("ti,dra7-iommu", 0x58882000, "58882000.mmu",
 465                        &dra7_ipu1_dsp_iommu_pdata),
 466 #endif
 467         /* Common auxdata */
 468         OF_DEV_AUXDATA("simple-pm-bus", 0, NULL, omap_auxdata_lookup),
 469         OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata),
 470         OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
 471         OF_DEV_AUXDATA("ti,omap-prm-inst", 0, NULL, &ti_prm_pdata),
 472         OF_DEV_AUXDATA("ti,omap-sdma", 0, NULL, &dma_plat_info),
 473         { /* sentinel */ },
 474 };
 475
 476 /*
 477  * Few boards still need to initialize some legacy devices with
 478  * platform data until the drivers support device tree.
 479  */
 480 static struct pdata_init pdata_quirks[] __initdata = {
 481 #ifdef CONFIG_ARCH_OMAP3
 482         { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
 483         { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
 484         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
 485         { "nokia,omap3-n900", nokia_n900_legacy_init, },
 486         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 487         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 488         { "logicpd,dm3730-torpedo-devkit", omap3_logicpd_torpedo_init, },
 489         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 490         { "ti,am3517-evm", am3517_evm_legacy_init, },
 491         { "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
 492         { "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, },
 493         { "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, },
 494 #endif
 495         { /* sentinel */ },
 496 };
 497
 498 static void pdata_quirks_check(struct pdata_init *quirks)
 499 {
 500         while (quirks->compatible) {
 501                 if (of_machine_is_compatible(quirks->compatible)) {
 502                         if (quirks->fn)
 503                                 quirks->fn();
 504                 }
 505                 quirks++;
 506         }
 507 }
 508
 509 static const char * const pdata_quirks_init_nodes[] = {
 510         "prcm",
 511         "prm",
 512 };
 513
 514 static void __init
 515 pdata_quirks_init_clocks(const struct of_device_id *omap_dt_match_table)
 516 {
 517         struct device_node *np;
 518         int i;
 519
 520         for (i = 0; i < ARRAY_SIZE(pdata_quirks_init_nodes); i++) {
 521                 np = of_find_node_by_name(NULL, pdata_quirks_init_nodes[i]);
 522                 if (!np)
 523                         continue;
 524
 525                 of_platform_populate(np, omap_dt_match_table,
 526                                      omap_auxdata_lookup, NULL);
 527
 528                 of_node_put(np);
 529         }
 530 }
 531
 532 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
 533 {
 534         /*
 535          * We still need this for omap2420 and omap3 PM to work, others are
 536          * using drivers/misc/sram.c already.
 537          */
 538         if (of_machine_is_compatible("ti,omap2420") ||
 539             of_machine_is_compatible("ti,omap3"))
 540                 omap_sdrc_init(NULL, NULL);
 541
 542         if (of_machine_is_compatible("ti,omap3"))
 543                 omap3_mcbsp_init();
 544         pdata_quirks_check(auxdata_quirks);
 545
 546         pdata_quirks_init_clocks(omap_dt_match_table);
 547
 548         of_platform_populate(NULL, omap_dt_match_table,
 549                              omap_auxdata_lookup, NULL);
 550         pdata_quirks_check(pdata_quirks);
 551 }