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 } 552