armadaxp.c revision 1.9
1 /* $NetBSD: armadaxp.c,v 1.9 2015/04/15 10:40:36 hsuenaga Exp $ */ 2 /******************************************************************************* 3 Copyright (C) Marvell International Ltd. and its affiliates 4 5 Developed by Semihalf 6 7 ******************************************************************************** 8 Marvell BSD License 9 10 If you received this File from Marvell, you may opt to use, redistribute and/or 11 modify this File under the following licensing terms. 12 Redistribution and use in source and binary forms, with or without modification, 13 are permitted provided that the following conditions are met: 14 15 * Redistributions of source code must retain the above copyright notice, 16 this list of conditions and the following disclaimer. 17 18 * Redistributions in binary form must reproduce the above copyright 19 notice, this list of conditions and the following disclaimer in the 20 documentation and/or other materials provided with the distribution. 21 22 * Neither the name of Marvell nor the names of its contributors may be 23 used to endorse or promote products derived from this software without 24 specific prior written permission. 25 26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 27 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 28 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 29 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 30 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 32 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 33 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 35 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 37 *******************************************************************************/ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: armadaxp.c,v 1.9 2015/04/15 10:40:36 hsuenaga Exp $"); 41 42 #define _INTR_PRIVATE 43 44 #include "opt_mvsoc.h" 45 46 #include <sys/param.h> 47 #include <sys/bus.h> 48 49 #include <machine/intr.h> 50 51 #include <arm/pic/picvar.h> 52 #include <arm/pic/picvar.h> 53 54 #include <arm/armreg.h> 55 #include <arm/cpu.h> 56 #include <arm/cpufunc.h> 57 58 #include <arm/marvell/mvsocreg.h> 59 #include <arm/marvell/mvsocvar.h> 60 #include <arm/marvell/armadaxpreg.h> 61 #include <arm/marvell/armadaxpvar.h> 62 63 #include <dev/marvell/marvellreg.h> 64 65 #define EXTRACT_XP_CPU_FREQ_FIELD(sar) (((0x01 & (sar >> 52)) << 3) | \ 66 (0x07 & (sar >> 21))) 67 #define EXTRACT_XP_FAB_FREQ_FIELD(sar) (((0x01 & (sar >> 51)) << 4) | \ 68 (0x0F & (sar >> 24))) 69 #define EXTRACT_370_CPU_FREQ_FIELD(sar) ((sar >> 11) & 0xf) 70 #define EXTRACT_370_FAB_FREQ_FIELD(sar) ((sar >> 15) & 0x1f) 71 72 #define MPIC_WRITE(reg, val) (bus_space_write_4(&mvsoc_bs_tag, \ 73 mpic_handle, reg, val)) 74 #define MPIC_CPU_WRITE(reg, val) (bus_space_write_4(&mvsoc_bs_tag, \ 75 mpic_cpu_handle, reg, val)) 76 77 #define MPIC_READ(reg) (bus_space_read_4(&mvsoc_bs_tag, \ 78 mpic_handle, reg)) 79 #define MPIC_CPU_READ(reg) (bus_space_read_4(&mvsoc_bs_tag, \ 80 mpic_cpu_handle, reg)) 81 82 #define L2_WRITE(reg, val) (bus_space_write_4(&mvsoc_bs_tag, \ 83 l2_handle, reg, val)) 84 #define L2_READ(reg) (bus_space_read_4(&mvsoc_bs_tag, \ 85 l2_handle, reg)) 86 bus_space_handle_t mpic_cpu_handle; 87 static bus_space_handle_t mpic_handle, l2_handle; 88 int l2cache_state = 0; 89 int iocc_state = 0; 90 #define read_miscreg(r) (*(volatile uint32_t *)(misc_base + (r))) 91 vaddr_t misc_base; 92 93 extern void (*mvsoc_intr_init)(void); 94 static void armadaxp_intr_init(void); 95 96 static void armadaxp_pic_unblock_irqs(struct pic_softc *, size_t, uint32_t); 97 static void armadaxp_pic_block_irqs(struct pic_softc *, size_t, uint32_t); 98 static void armadaxp_pic_establish_irq(struct pic_softc *, struct intrsource *); 99 static void armadaxp_pic_set_priority(struct pic_softc *, int); 100 101 static int armadaxp_find_pending_irqs(void); 102 static void armadaxp_pic_block_irq(struct pic_softc *, size_t); 103 104 struct vco_freq_ratio { 105 uint8_t vco_cpu; /* VCO to CLK0(CPU) clock ratio */ 106 uint8_t vco_l2c; /* VCO to NB(L2 cache) clock ratio */ 107 uint8_t vco_hcl; /* VCO to HCLK(DDR controller) clock ratio */ 108 uint8_t vco_ddr; /* VCO to DR(DDR memory) clock ratio */ 109 }; 110 111 static struct vco_freq_ratio freq_conf_table[] = { 112 /*00*/ { 1, 1, 4, 2 }, 113 /*01*/ { 1, 2, 2, 2 }, 114 /*02*/ { 2, 2, 6, 3 }, 115 /*03*/ { 2, 2, 3, 3 }, 116 /*04*/ { 1, 2, 3, 3 }, 117 /*05*/ { 1, 2, 4, 2 }, 118 /*06*/ { 1, 1, 2, 2 }, 119 /*07*/ { 2, 3, 6, 6 }, 120 /*08*/ { 2, 3, 5, 5 }, 121 /*09*/ { 1, 2, 6, 3 }, 122 /*10*/ { 2, 4, 10, 5 }, 123 /*11*/ { 1, 3, 6, 6 }, 124 /*12*/ { 1, 2, 5, 5 }, 125 /*13*/ { 1, 3, 6, 3 }, 126 /*14*/ { 1, 2, 5, 5 }, 127 /*15*/ { 2, 2, 5, 5 }, 128 /*16*/ { 1, 1, 3, 3 }, 129 /*17*/ { 2, 5, 10, 10 }, 130 /*18*/ { 1, 3, 8, 4 }, 131 /*19*/ { 1, 1, 2, 1 }, 132 /*20*/ { 2, 3, 6, 3 }, 133 /*21*/ { 1, 2, 8, 4 }, 134 /*22*/ { 2, 5, 10, 5 } 135 }; 136 137 static uint16_t clock_table_xp[] = { 138 1000, 1066, 1200, 1333, 1500, 1666, 1800, 2000, 139 600, 667, 800, 1600, 2133, 2200, 2400 140 }; 141 static uint16_t clock_table_370[] = { 142 400, 533, 667, 800, 1000, 1067, 1200, 1333, 143 1500, 1600, 1667, 1800, 2000, 333, 600, 900, 144 0 145 }; 146 147 static struct pic_ops armadaxp_picops = { 148 .pic_unblock_irqs = armadaxp_pic_unblock_irqs, 149 .pic_block_irqs = armadaxp_pic_block_irqs, 150 .pic_establish_irq = armadaxp_pic_establish_irq, 151 .pic_set_priority = armadaxp_pic_set_priority, 152 }; 153 154 static struct pic_softc armadaxp_pic = { 155 .pic_ops = &armadaxp_picops, 156 .pic_name = "armadaxp", 157 }; 158 159 static struct { 160 bus_size_t offset; 161 uint32_t bits; 162 } clkgatings[]= { 163 { ARMADAXP_GBE3_BASE, (1 << 1) }, 164 { ARMADAXP_GBE2_BASE, (1 << 2) }, 165 { ARMADAXP_GBE1_BASE, (1 << 3) }, 166 { ARMADAXP_GBE0_BASE, (1 << 4) }, 167 { MVSOC_PEX_BASE, (1 << 5) }, 168 { ARMADAXP_PEX01_BASE, (1 << 6) }, 169 { ARMADAXP_PEX02_BASE, (1 << 7) }, 170 { ARMADAXP_PEX03_BASE, (1 << 8) }, 171 { ARMADAXP_PEX10_BASE, (1 << 9) }, 172 { ARMADAXP_PEX11_BASE, (1 << 10) }, 173 { ARMADAXP_PEX12_BASE, (1 << 11) }, 174 { ARMADAXP_PEX13_BASE, (1 << 12) }, 175 #if 0 176 { NetA, (1 << 13) }, 177 #endif 178 { ARMADAXP_SATAHC_BASE, (1 << 14) | (1 << 15) | (1 << 29) | (1 << 30) }, 179 { ARMADAXP_LCD_BASE, (1 << 16) }, 180 { ARMADAXP_SDIO_BASE, (1 << 17) }, 181 { ARMADAXP_USB1_BASE, (1 << 19) }, 182 { ARMADAXP_USB2_BASE, (1 << 20) }, 183 { ARMADAXP_PEX2_BASE, (1 << 26) }, 184 { ARMADAXP_PEX3_BASE, (1 << 27) }, 185 #if 0 186 { DDR, (1 << 28) }, 187 #endif 188 }; 189 190 /* 191 * armadaxp_intr_bootstrap: 192 * 193 * Initialize the rest of the interrupt subsystem, making it 194 * ready to handle interrupts from devices. 195 */ 196 void 197 armadaxp_intr_bootstrap(bus_addr_t pbase) 198 { 199 int i; 200 201 /* Map MPIC base and MPIC percpu base registers */ 202 if (bus_space_map(&mvsoc_bs_tag, pbase + ARMADAXP_MLMB_MPIC_BASE, 203 0x500, 0, &mpic_handle) != 0) 204 panic("%s: Could not map MPIC registers", __func__); 205 if (bus_space_map(&mvsoc_bs_tag, pbase + ARMADAXP_MLMB_MPIC_CPU_BASE, 206 0x800, 0, &mpic_cpu_handle) != 0) 207 panic("%s: Could not map MPIC percpu registers", __func__); 208 209 /* Disable all interrupts */ 210 for (i = 0; i < 116; i++) 211 MPIC_WRITE(ARMADAXP_MLMB_MPIC_ICE, i); 212 213 mvsoc_intr_init = armadaxp_intr_init; 214 } 215 216 static void 217 armadaxp_intr_init(void) 218 { 219 int ctrl; 220 221 /* Get max interrupts */ 222 armadaxp_pic.pic_maxsources = 223 ((MPIC_READ(ARMADAXP_MLMB_MPIC_CTRL) >> 2) & 0x7FF); 224 225 if (!armadaxp_pic.pic_maxsources) 226 armadaxp_pic.pic_maxsources = 116; 227 228 pic_add(&armadaxp_pic, 0); 229 230 ctrl = MPIC_READ(ARMADAXP_MLMB_MPIC_CTRL); 231 /* Enable IRQ prioritization */ 232 ctrl |= (1 << 0); 233 MPIC_WRITE(ARMADAXP_MLMB_MPIC_CTRL, ctrl); 234 235 find_pending_irqs = armadaxp_find_pending_irqs; 236 } 237 238 static void 239 armadaxp_pic_unblock_irqs(struct pic_softc *pic, size_t irqbase, 240 uint32_t irq_mask) 241 { 242 int n; 243 244 while (irq_mask != 0) { 245 n = ffs(irq_mask) - 1; 246 KASSERT(pic->pic_maxsources >= n + irqbase); 247 MPIC_WRITE(ARMADAXP_MLMB_MPIC_ISE, n + irqbase); 248 MPIC_CPU_WRITE(ARMADAXP_MLMB_MPIC_ICM, n + irqbase); 249 if ((n + irqbase) == 0) 250 MPIC_CPU_WRITE(ARMADAXP_MLMB_MPIC_DOORBELL_MASK, 251 0xffffffff); 252 irq_mask &= ~__BIT(n); 253 } 254 } 255 256 static void 257 armadaxp_pic_block_irqs(struct pic_softc *pic, size_t irqbase, 258 uint32_t irq_mask) 259 { 260 int n; 261 262 while (irq_mask != 0) { 263 n = ffs(irq_mask) - 1; 264 KASSERT(pic->pic_maxsources >= n + irqbase); 265 MPIC_WRITE(ARMADAXP_MLMB_MPIC_ICE, n + irqbase); 266 MPIC_CPU_WRITE(ARMADAXP_MLMB_MPIC_ISM, n + irqbase); 267 irq_mask &= ~__BIT(n); 268 } 269 } 270 271 static void 272 armadaxp_pic_establish_irq(struct pic_softc *pic, struct intrsource *is) 273 { 274 int tmp; 275 KASSERT(pic->pic_maxsources >= is->is_irq); 276 tmp = MPIC_READ(ARMADAXP_MLMB_MPIC_ISCR_BASE + is->is_irq * 4); 277 /* Clear previous priority */ 278 tmp &= ~(0xf << MPIC_ISCR_SHIFT); 279 MPIC_WRITE(ARMADAXP_MLMB_MPIC_ISCR_BASE + is->is_irq * 4, 280 tmp | (is->is_ipl << MPIC_ISCR_SHIFT)); 281 } 282 283 static void 284 armadaxp_pic_set_priority(struct pic_softc *pic, int ipl) 285 { 286 int ctp; 287 288 ctp = MPIC_CPU_READ(ARMADAXP_MLMB_MPIC_CTP); 289 ctp &= ~(0xf << MPIC_CTP_SHIFT); 290 ctp |= (ipl << MPIC_CTP_SHIFT); 291 MPIC_CPU_WRITE(ARMADAXP_MLMB_MPIC_CTP, ctp); 292 } 293 294 static int 295 armadaxp_find_pending_irqs(void) 296 { 297 struct intrsource *is; 298 int irq; 299 300 irq = MPIC_CPU_READ(ARMADAXP_MLMB_MPIC_IIACK) & 0x3ff; 301 302 /* Is it a spurious interrupt ?*/ 303 if (irq == 0x3ff) 304 return 0; 305 is = armadaxp_pic.pic_sources[irq]; 306 if (is == NULL) { 307 printf("stray interrupt: %d\n", irq); 308 return 0; 309 } 310 311 armadaxp_pic_block_irq(&armadaxp_pic, irq); 312 pic_mark_pending(&armadaxp_pic, irq); 313 314 return is->is_ipl; 315 } 316 317 static void 318 armadaxp_pic_block_irq(struct pic_softc *pic, size_t irq) 319 { 320 321 KASSERT(pic->pic_maxsources >= irq); 322 MPIC_WRITE(ARMADAXP_MLMB_MPIC_ICE, irq); 323 MPIC_CPU_WRITE(ARMADAXP_MLMB_MPIC_ISM, irq); 324 } 325 326 /* 327 * Clock functions 328 */ 329 330 void 331 armadaxp_getclks(void) 332 { 333 uint64_t sar_reg; 334 uint8_t sar_cpu_freq, sar_fab_freq; 335 336 if (cputype == CPU_ID_MV88SV584X_V7) 337 mvTclk = 250000000; /* 250 MHz */ 338 else 339 mvTclk = 200000000; /* 200 MHz */ 340 341 sar_reg = (read_miscreg(ARMADAXP_MISC_SAR_HI) << 31) | 342 read_miscreg(ARMADAXP_MISC_SAR_LO); 343 344 sar_cpu_freq = EXTRACT_XP_CPU_FREQ_FIELD(sar_reg); 345 sar_fab_freq = EXTRACT_XP_FAB_FREQ_FIELD(sar_reg); 346 347 /* Check if CPU frequency field has correct value */ 348 if (sar_cpu_freq >= __arraycount(clock_table_xp)) 349 panic("Reserved value in cpu frequency configuration field: " 350 "%d", sar_cpu_freq); 351 352 /* Check if fabric frequency field has correct value */ 353 if (sar_fab_freq >= __arraycount(freq_conf_table)) 354 panic("Reserved value in fabric frequency configuration field: " 355 "%d", sar_fab_freq); 356 357 /* Get CPU clock frequency */ 358 mvPclk = clock_table_xp[sar_cpu_freq] * 359 freq_conf_table[sar_fab_freq].vco_cpu; 360 361 /* Get L2CLK clock frequency and use as system clock (mvSysclk) */ 362 mvSysclk = mvPclk / freq_conf_table[sar_fab_freq].vco_l2c; 363 364 /* Round mvSysclk value to integer MHz */ 365 if (((mvPclk % freq_conf_table[sar_fab_freq].vco_l2c) * 10 / 366 freq_conf_table[sar_fab_freq].vco_l2c) >= 5) 367 mvSysclk++; 368 369 mvPclk *= 1000000; 370 mvSysclk *= 1000000; 371 372 curcpu()->ci_data.cpu_cc_freq = mvPclk; 373 } 374 375 void 376 armada370_getclks(void) 377 { 378 uint32_t sar; 379 uint8_t cpu_freq, fab_freq; 380 381 sar = read_miscreg(ARMADAXP_MISC_SAR_LO); 382 if (sar & 0x00100000) 383 mvTclk = 200000000; /* 200 MHz */ 384 else 385 mvTclk = 166666667; /* 166 MHz */ 386 387 cpu_freq = EXTRACT_370_CPU_FREQ_FIELD(sar); 388 fab_freq = EXTRACT_370_FAB_FREQ_FIELD(sar); 389 390 /* Check if CPU frequency field has correct value */ 391 if (cpu_freq >= __arraycount(clock_table_370)) 392 panic("Reserved value in cpu frequency configuration field: " 393 "%d", cpu_freq); 394 395 /* Check if fabric frequency field has correct value */ 396 if (fab_freq >= __arraycount(freq_conf_table)) 397 panic("Reserved value in fabric frequency configuration field: " 398 "%d", fab_freq); 399 400 /* Get CPU clock frequency */ 401 mvPclk = clock_table_370[cpu_freq] * 402 freq_conf_table[fab_freq].vco_cpu; 403 404 /* Get L2CLK clock frequency and use as system clock (mvSysclk) */ 405 mvSysclk = mvPclk / freq_conf_table[fab_freq].vco_l2c; 406 407 /* Round mvSysclk value to integer MHz */ 408 if (((mvPclk % freq_conf_table[fab_freq].vco_l2c) * 10 / 409 freq_conf_table[fab_freq].vco_l2c) >= 5) 410 mvSysclk++; 411 412 mvPclk *= 1000000; 413 mvSysclk *= 1000000; 414 } 415 416 /* 417 * L2 Cache initialization 418 */ 419 420 int 421 armadaxp_l2_init(bus_addr_t pbase) 422 { 423 u_int32_t reg; 424 int ret; 425 426 /* Map L2 space */ 427 ret = bus_space_map(&mvsoc_bs_tag, pbase + ARMADAXP_L2_BASE, 428 0x1000, 0, &l2_handle); 429 if (ret) { 430 printf("%s: Cannot map L2 register space, ret:%d\n", 431 __func__, ret); 432 return (-1); 433 } 434 435 /* Set L2 policy */ 436 reg = L2_READ(ARMADAXP_L2_AUX_CTRL); 437 reg &= ~(L2_WBWT_MODE_MASK); 438 reg &= ~(L2_REP_STRAT_MASK); 439 reg |= L2_REP_STRAT_SEMIPLRU; 440 L2_WRITE(ARMADAXP_L2_AUX_CTRL, reg); 441 442 /* Invalidate L2 cache */ 443 L2_WRITE(ARMADAXP_L2_INV_WAY, L2_ALL_WAYS); 444 445 /* Clear pending L2 interrupts */ 446 L2_WRITE(ARMADAXP_L2_INT_CAUSE, 0x1ff); 447 448 /* Enable Cache and TLB maintenance broadcast */ 449 __asm__ __volatile__ ("mrc p15, 1, %0, c15, c2, 0" : "=r"(reg)); 450 reg |= (1 << 8); 451 __asm__ __volatile__ ("mcr p15, 1, %0, c15, c2, 0" : :"r"(reg)); 452 453 /* 454 * Set the Point of Coherency and Point of Unification to DRAM. 455 * This is a reset value but anyway, configure this just in case. 456 */ 457 reg = read_mlmbreg(ARMADAXP_L2_CFU); 458 reg |= (1 << 17) | (1 << 18); 459 write_mlmbreg(ARMADAXP_L2_CFU, reg); 460 461 /* Enable L2 cache */ 462 reg = L2_READ(ARMADAXP_L2_CTRL); 463 L2_WRITE(ARMADAXP_L2_CTRL, reg | L2_ENABLE); 464 465 /* Mark as enabled */ 466 l2cache_state = 1; 467 468 #ifdef DEBUG 469 /* Configure and enable counter */ 470 L2_WRITE(ARMADAXP_L2_CNTR_CONF(0), 0xf0000 | (4 << 2)); 471 L2_WRITE(ARMADAXP_L2_CNTR_CONF(1), 0xf0000 | (2 << 2)); 472 L2_WRITE(ARMADAXP_L2_CNTR_CTRL, 0x303); 473 #endif 474 475 return (0); 476 } 477 478 void 479 armadaxp_sdcache_inv_all(void) 480 { 481 L2_WRITE(ARMADAXP_L2_INV_WAY, L2_ALL_WAYS); 482 } 483 484 void 485 armadaxp_sdcache_wb_all(void) 486 { 487 L2_WRITE(ARMADAXP_L2_WB_WAY, L2_ALL_WAYS); 488 __asm__ __volatile__("dsb"); 489 } 490 491 void 492 armadaxp_sdcache_wbinv_all(void) 493 { 494 L2_WRITE(ARMADAXP_L2_WBINV_WAY, L2_ALL_WAYS); 495 __asm__ __volatile__("dsb"); 496 } 497 498 void 499 armadaxp_sdcache_inv_range(vaddr_t va, paddr_t pa, psize_t sz) 500 { 501 paddr_t pa_base, pa_end; 502 503 pa_base = pa & ~0x1f; 504 pa_end = (pa_base + sz) & ~0x1f; 505 L2_WRITE(ARMADAXP_L2_RANGE_BASE, pa_base); 506 L2_WRITE(ARMADAXP_L2_INV_RANGE, pa_end); 507 } 508 509 void 510 armadaxp_sdcache_wb_range(vaddr_t va, paddr_t pa, psize_t sz) 511 { 512 paddr_t pa_base, pa_end; 513 514 pa_base = pa & ~0x1f; 515 pa_end = (pa_base + sz) & ~0x1f; 516 L2_WRITE(ARMADAXP_L2_RANGE_BASE, pa_base); 517 L2_WRITE(ARMADAXP_L2_WB_RANGE, pa_end); 518 __asm__ __volatile__("dsb"); 519 } 520 521 void 522 armadaxp_sdcache_wbinv_range(vaddr_t va, paddr_t pa, psize_t sz) 523 { 524 paddr_t pa_base, pa_end; 525 526 pa_base = pa & ~0x1f; 527 pa_end = (pa_base + sz) & ~0x1f; 528 L2_WRITE(ARMADAXP_L2_RANGE_BASE, pa_base); 529 L2_WRITE(ARMADAXP_L2_WBINV_RANGE, pa_end); 530 __asm__ __volatile__("dsb"); 531 } 532 533 void 534 armadaxp_io_coherency_init(void) 535 { 536 uint32_t reg; 537 538 /* set CIB read snoop command to ReadUnique */ 539 reg = read_mlmbreg(MVSOC_MLMB_CIB_CTRL_CFG); 540 reg &= ~(7 << 16); 541 reg |= (7 << 16); 542 write_mlmbreg(MVSOC_MLMB_CIB_CTRL_CFG, reg); 543 /* enable CPUs in SMP group on Fabric coherency */ 544 reg = read_mlmbreg(MVSOC_MLMB_COHERENCY_FABRIC_CTRL); 545 reg &= ~(0x3 << 24); 546 reg |= (1 << 24); 547 write_mlmbreg(MVSOC_MLMB_COHERENCY_FABRIC_CTRL, reg); 548 549 reg = read_mlmbreg(MVSOC_MLMB_COHERENCY_FABRIC_CFG); 550 reg &= ~(0x3 << 24); 551 reg |= (1 << 24); 552 write_mlmbreg(MVSOC_MLMB_COHERENCY_FABRIC_CFG, reg); 553 554 /* Mark as enabled */ 555 iocc_state = 1; 556 } 557 558 int 559 armadaxp_clkgating(struct marvell_attach_args *mva) 560 { 561 uint32_t val; 562 int i; 563 564 for (i = 0; i < __arraycount(clkgatings); i++) { 565 if (clkgatings[i].offset == mva->mva_offset) { 566 val = read_miscreg(ARMADAXP_MISC_PMCGC); 567 if ((val & clkgatings[i].bits) == clkgatings[i].bits) 568 /* Clock enabled */ 569 return 0; 570 return 1; 571 } 572 } 573 /* Clock Gating not support */ 574 return 0; 575 } 576
Indexes created Fri Sep 26 20:09:58 GMT 2025