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(int gpio, char *hub_name) 102 { 103 int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name); 104 105 if (err) { 106 pr_err("SBC-T3x: %s reset gpio request failed: %d\n", 107 hub_name, err); 108 return; 109 } 110 111 gpiod_export(gpio_to_desc(gpio), 0); 112 113 udelay(10); 114 gpio_set_value(gpio, 1); 115 msleep(1); 116 } 117 118 static void __init omap3_sbc_t3730_legacy_init(void) 119 { 120 omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); 121 } 122 123 static void __init omap3_sbc_t3530_legacy_init(void) 124 { 125 omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); 126 } 127 128 static void __init omap3_evm_legacy_init(void) 129 { 130 hsmmc2_internal_input_clk(); 131 } 132 133 static void am35xx_enable_emac_int(void) 134 { 135 u32 v; 136 137 v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); 138 v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR | 139 AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR); 140 omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR); 141 omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */ 142 } 143 144 static void am35xx_disable_emac_int(void) 145 { 146 u32 v; 147 148 v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); 149 v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR); 150 omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR); 151 omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */ 152 } 153 154 static struct emac_platform_data am35xx_emac_pdata = { 155 .interrupt_enable = am35xx_enable_emac_int, 156 .interrupt_disable = am35xx_disable_emac_int, 157 }; 158 159 static void __init am35xx_emac_reset(void) 160 { 161 u32 v; 162 163 v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); 164 v &= ~AM35XX_CPGMACSS_SW_RST; 165 omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET); 166 omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */ 167 } 168 169 static struct gpio cm_t3517_wlan_gpios[] __initdata = { 170 { 56, GPIOF_OUT_INIT_HIGH, "wlan pwr" }, 171 { 4, GPIOF_OUT_INIT_HIGH, "xcvr noe" }, 172 }; 173 174 static void __init omap3_sbc_t3517_wifi_init(void) 175 { 176 int err = gpio_request_array(cm_t3517_wlan_gpios, 177 ARRAY_SIZE(cm_t3517_wlan_gpios)); 178 if (err) { 179 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err); 180 return; 181 } 182 183 gpiod_export(gpio_to_desc(cm_t3517_wlan_gpios[0].gpio), 0); 184 gpiod_export(gpio_to_desc(cm_t3517_wlan_gpios[1].gpio), 0); 185 186 msleep(100); 187 gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0); 188 } 189 190 static void __init omap3_sbc_t3517_legacy_init(void) 191 { 192 omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub"); 193 omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub"); 194 am35xx_emac_reset(); 195 hsmmc2_internal_input_clk(); 196 omap3_sbc_t3517_wifi_init(); 197 } 198 199 static void __init am3517_evm_legacy_init(void) 200 { 201 am35xx_emac_reset(); 202 } 203 204 static void __init nokia_n900_legacy_init(void) 205 { 206 hsmmc2_internal_input_clk(); 207 mmc_pdata[0].name = "external"; 208 mmc_pdata[1].name = "internal"; 209 210 if (omap_type() != OMAP2_DEVICE_TYPE_GP) { 211 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) { 212 pr_info("RX-51: Enabling ARM errata 430973 workaround\n"); 213 /* set IBE to 1 */ 214 rx51_secure_update_aux_cr(BIT(6), 0); 215 } else { 216 pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n"); 217 pr_warn("Thumb binaries may crash randomly without this workaround\n"); 218 } 219 } 220 } 221 222 static void __init omap3_tao3530_legacy_init(void) 223 { 224 hsmmc2_internal_input_clk(); 225 } 226 227 static void __init omap3_logicpd_torpedo_init(void) 228 { 229 omap3_gpio126_127_129(); 230 } 231 232 /* omap3pandora legacy devices */ 233 234 static struct platform_device pandora_backlight = { 235 .name = "pandora-backlight", 236 .id = -1, 237 }; 238 239 static void __init omap3_pandora_legacy_init(void) 240 { 241 platform_device_register(&pandora_backlight); 242 } 243 #endif /* CONFIG_ARCH_OMAP3 */ 244 245 #ifdef CONFIG_SOC_DRA7XX 246 static struct iommu_platform_data dra7_ipu1_dsp_iommu_pdata = { 247 .set_pwrdm_constraint = omap_iommu_set_pwrdm_constraint, 248 }; 249 #endif 250 251 static struct clockdomain *ti_sysc_find_one_clockdomain(struct clk *clk) 252 { 253 struct clk_hw *hw = __clk_get_hw(clk); 254 struct clockdomain *clkdm = NULL; 255 struct clk_hw_omap *hwclk; 256 257 hwclk = to_clk_hw_omap(hw); 258 if (!omap2_clk_is_hw_omap(hw)) 259 return NULL; 260 261 if (hwclk && hwclk->clkdm_name) 262 clkdm = clkdm_lookup(hwclk->clkdm_name); 263 264 return clkdm; 265 } 266 267 /** 268 * ti_sysc_clkdm_init - find clockdomain based on clock 269 * @fck: device functional clock 270 * @ick: device interface clock 271 * @dev: struct device 272 * 273 * Populate clockdomain based on clock. It is needed for 274 * clkdm_deny_idle() and clkdm_allow_idle() for blocking clockdomain 275 * clockdomain idle during reset, enable and idle. 276 * 277 * Note that we assume interconnect driver manages the clocks 278 * and do not need to populate oh->_clk for dynamically 279 * allocated modules. 280 */ 281 static int ti_sysc_clkdm_init(struct device *dev, 282 struct clk *fck, struct clk *ick, 283 struct ti_sysc_cookie *cookie) 284 { 285 if (!IS_ERR(fck)) 286 cookie->clkdm = ti_sysc_find_one_clockdomain(fck); 287 if (cookie->clkdm) 288 return 0; 289 if (!IS_ERR(ick)) 290 cookie->clkdm = ti_sysc_find_one_clockdomain(ick); 291 if (cookie->clkdm) 292 return 0; 293 294 return -ENODEV; 295 } 296 297 static void ti_sysc_clkdm_deny_idle(struct device *dev, 298 const struct ti_sysc_cookie *cookie) 299 { 300 if (cookie->clkdm) 301 clkdm_deny_idle(cookie->clkdm); 302 } 303 304 static void ti_sysc_clkdm_allow_idle(struct device *dev, 305 const struct ti_sysc_cookie *cookie) 306 { 307 if (cookie->clkdm) 308 clkdm_allow_idle(cookie->clkdm); 309 } 310 311 #ifdef CONFIG_OMAP_HWMOD 312 static int ti_sysc_enable_module(struct device *dev, 313 const struct ti_sysc_cookie *cookie) 314 { 315 if (!cookie->data) 316 return -EINVAL; 317 318 return omap_hwmod_enable(cookie->data); 319 } 320 321 static int ti_sysc_idle_module(struct device *dev, 322 const struct ti_sysc_cookie *cookie) 323 { 324 if (!cookie->data) 325 return -EINVAL; 326 327 return omap_hwmod_idle(cookie->data); 328 } 329 330 static int ti_sysc_shutdown_module(struct device *dev, 331 const struct ti_sysc_cookie *cookie) 332 { 333 if (!cookie->data) 334 return -EINVAL; 335 336 return omap_hwmod_shutdown(cookie->data); 337 } 338 #endif /* CONFIG_OMAP_HWMOD */ 339 340 static bool ti_sysc_soc_type_gp(void) 341 { 342 return omap_type() == OMAP2_DEVICE_TYPE_GP; 343 } 344 345 static struct of_dev_auxdata omap_auxdata_lookup[]; 346 347 static struct ti_sysc_platform_data ti_sysc_pdata = { 348 .auxdata = omap_auxdata_lookup, 349 .soc_type_gp = ti_sysc_soc_type_gp, 350 .init_clockdomain = ti_sysc_clkdm_init, 351 .clkdm_deny_idle = ti_sysc_clkdm_deny_idle, 352 .clkdm_allow_idle = ti_sysc_clkdm_allow_idle, 353 #ifdef CONFIG_OMAP_HWMOD 354 .init_module = omap_hwmod_init_module, 355 .enable_module = ti_sysc_enable_module, 356 .idle_module = ti_sysc_idle_module, 357 .shutdown_module = ti_sysc_shutdown_module, 358 #endif 359 }; 360 361 static struct pcs_pdata pcs_pdata; 362 363 void omap_pcs_legacy_init(int irq, void (*rearm)(void)) 364 { 365 pcs_pdata.irq = irq; 366 pcs_pdata.rearm = rearm; 367 } 368 369 static struct ti_prm_platform_data ti_prm_pdata = { 370 .clkdm_deny_idle = clkdm_deny_idle, 371 .clkdm_allow_idle = clkdm_allow_idle, 372 .clkdm_lookup = clkdm_lookup, 373 }; 374 375 #if defined(CONFIG_ARCH_OMAP3) && IS_ENABLED(CONFIG_SND_SOC_OMAP_MCBSP) 376 static struct omap_mcbsp_platform_data mcbsp_pdata; 377 static void __init omap3_mcbsp_init(void) 378 { 379 omap3_mcbsp_init_pdata_callback(&mcbsp_pdata); 380 } 381 #else 382 static void __init omap3_mcbsp_init(void) {} 383 #endif 384 385 /* 386 * Few boards still need auxdata populated before we populate 387 * the dev entries in of_platform_populate(). 388 */ 389 static struct pdata_init auxdata_quirks[] __initdata = { 390 #ifdef CONFIG_SOC_OMAP2420 391 { "nokia,n800", omap2420_n8x0_legacy_init, }, 392 { "nokia,n810", omap2420_n8x0_legacy_init, }, 393 { "nokia,n810-wimax", omap2420_n8x0_legacy_init, }, 394 #endif 395 { /* sentinel */ }, 396 }; 397 398 struct omap_sr_data __maybe_unused omap_sr_pdata[OMAP_SR_NR]; 399 400 static struct of_dev_auxdata omap_auxdata_lookup[] = { 401 #ifdef CONFIG_MACH_NOKIA_N8X0 402 OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL), 403 OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data), 404 #endif 405 #ifdef CONFIG_ARCH_OMAP3 406 OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu", 407 &omap3_iommu_pdata), 408 OF_DEV_AUXDATA("ti,omap2-iommu", 0x480bd400, "480bd400.mmu", 409 &omap3_iommu_isp_pdata), 410 OF_DEV_AUXDATA("ti,omap3-smartreflex-core", 0x480cb000, 411 "480cb000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]), 412 OF_DEV_AUXDATA("ti,omap3-smartreflex-mpu-iva", 0x480c9000, 413 "480c9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]), 414 OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]), 415 OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]), 416 /* Only on am3517 */ 417 OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL), 418 OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0", 419 &am35xx_emac_pdata), 420 OF_DEV_AUXDATA("nokia,n900-rom-rng", 0, NULL, rx51_secure_rng_call), 421 /* McBSP modules with sidetone core */ 422 #if IS_ENABLED(CONFIG_SND_SOC_OMAP_MCBSP) 423 OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49022000, "49022000.mcbsp", &mcbsp_pdata), 424 OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49024000, "49024000.mcbsp", &mcbsp_pdata), 425 #endif 426 #endif 427 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) 428 OF_DEV_AUXDATA("ti,omap4-smartreflex-iva", 0x4a0db000, 429 "4a0db000.smartreflex", &omap_sr_pdata[OMAP_SR_IVA]), 430 OF_DEV_AUXDATA("ti,omap4-smartreflex-core", 0x4a0dd000, 431 "4a0dd000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]), 432 OF_DEV_AUXDATA("ti,omap4-smartreflex-mpu", 0x4a0d9000, 433 "4a0d9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]), 434 #endif 435 #ifdef CONFIG_SOC_DRA7XX 436 OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x40d01000, "40d01000.mmu", 437 &dra7_ipu1_dsp_iommu_pdata), 438 OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x41501000, "41501000.mmu", 439 &dra7_ipu1_dsp_iommu_pdata), 440 OF_DEV_AUXDATA("ti,dra7-iommu", 0x58882000, "58882000.mmu", 441 &dra7_ipu1_dsp_iommu_pdata), 442 #endif 443 /* Common auxdata */ 444 OF_DEV_AUXDATA("simple-pm-bus", 0, NULL, omap_auxdata_lookup), 445 OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata), 446 OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata), 447 OF_DEV_AUXDATA("ti,omap-prm-inst", 0, NULL, &ti_prm_pdata), 448 OF_DEV_AUXDATA("ti,omap-sdma", 0, NULL, &dma_plat_info), 449 { /* sentinel */ }, 450 }; 451 452 /* 453 * Few boards still need to initialize some legacy devices with 454 * platform data until the drivers support device tree. 455 */ 456 static struct pdata_init pdata_quirks[] __initdata = { 457 #ifdef CONFIG_ARCH_OMAP3 458 { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, }, 459 { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, }, 460 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, }, 461 { "nokia,omap3-n900", nokia_n900_legacy_init, }, 462 { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, 463 { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, 464 { "logicpd,dm3730-torpedo-devkit", omap3_logicpd_torpedo_init, }, 465 { "ti,omap3-evm-37xx", omap3_evm_legacy_init, }, 466 { "ti,am3517-evm", am3517_evm_legacy_init, }, 467 { "technexion,omap3-tao3530", omap3_tao3530_legacy_init, }, 468 { "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, }, 469 { "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, }, 470 #endif 471 { /* sentinel */ }, 472 }; 473 474 static void pdata_quirks_check(struct pdata_init *quirks) 475 { 476 while (quirks->compatible) { 477 if (of_machine_is_compatible(quirks->compatible)) { 478 if (quirks->fn) 479 quirks->fn(); 480 } 481 quirks++; 482 } 483 } 484 485 static const char * const pdata_quirks_init_nodes[] = { 486 "prcm", 487 "prm", 488 }; 489 490 static void __init 491 pdata_quirks_init_clocks(const struct of_device_id *omap_dt_match_table) 492 { 493 struct device_node *np; 494 int i; 495 496 for (i = 0; i < ARRAY_SIZE(pdata_quirks_init_nodes); i++) { 497 np = of_find_node_by_name(NULL, pdata_quirks_init_nodes[i]); 498 if (!np) 499 continue; 500 501 of_platform_populate(np, omap_dt_match_table, 502 omap_auxdata_lookup, NULL); 503 504 of_node_put(np); 505 } 506 } 507 508 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table) 509 { 510 /* 511 * We still need this for omap2420 and omap3 PM to work, others are 512 * using drivers/misc/sram.c already. 513 */ 514 if (of_machine_is_compatible("ti,omap2420") || 515 of_machine_is_compatible("ti,omap3")) 516 omap_sdrc_init(NULL, NULL); 517 518 if (of_machine_is_compatible("ti,omap3")) 519 omap3_mcbsp_init(); 520 pdata_quirks_check(auxdata_quirks); 521 522 pdata_quirks_init_clocks(omap_dt_match_table); 523 524 of_platform_populate(NULL, omap_dt_match_table, 525 omap_auxdata_lookup, NULL); 526 pdata_quirks_check(pdata_quirks); 527 } 528