tegra124_car.c revision 1.22
1 /* $NetBSD: tegra124_car.c,v 1.22 2021/01/27 03:10:19 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: tegra124_car.c,v 1.22 2021/01/27 03:10:19 thorpej Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/device.h> 35 #include <sys/intr.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/rndsource.h> 39 #include <sys/atomic.h> 40 #include <sys/kmem.h> 41 42 #include <dev/clk/clk_backend.h> 43 44 #include <arm/nvidia/tegra_reg.h> 45 #include <arm/nvidia/tegra124_carreg.h> 46 #include <arm/nvidia/tegra_clock.h> 47 #include <arm/nvidia/tegra_pmcreg.h> 48 #include <arm/nvidia/tegra_var.h> 49 50 #include <dev/fdt/fdtvar.h> 51 52 static int tegra124_car_match(device_t, cfdata_t, void *); 53 static void tegra124_car_attach(device_t, device_t, void *); 54 55 static struct clk *tegra124_car_clock_decode(device_t, int, const void *, 56 size_t); 57 58 static const struct fdtbus_clock_controller_func tegra124_car_fdtclock_funcs = { 59 .decode = tegra124_car_clock_decode 60 }; 61 62 /* DT clock ID to clock name mappings */ 63 static struct tegra124_car_clock_id { 64 u_int id; 65 const char *name; 66 } tegra124_car_clock_ids[] = { 67 { 3, "ispb" }, 68 { 4, "rtc" }, 69 { 5, "timer" }, 70 { 6, "uarta" }, 71 { 9, "sdmmc2" }, 72 { 11, "i2s1" }, 73 { 12, "i2c1" }, 74 { 14, "sdmmc1" }, 75 { 15, "sdmmc4" }, 76 { 17, "pwm" }, 77 { 18, "i2s2" }, 78 { 22, "usbd" }, 79 { 23, "isp" }, 80 { 26, "disp2" }, 81 { 27, "disp1" }, 82 { 28, "host1x" }, 83 { 29, "vcp" }, 84 { 30, "i2s0" }, 85 { 32, "mc" }, 86 { 34, "apbdma" }, 87 { 36, "kbc" }, 88 { 40, "kfuse" }, 89 { 41, "spi1" }, 90 { 42, "nor" }, 91 { 44, "spi2" }, 92 { 46, "spi3" }, 93 { 47, "i2c5" }, 94 { 48, "dsia" }, 95 { 50, "mipi" }, 96 { 51, "hdmi" }, 97 { 52, "csi" }, 98 { 54, "i2c2" }, 99 { 55, "uartc" }, 100 { 56, "mipi_cal" }, 101 { 57, "emc" }, 102 { 58, "usb2" }, 103 { 59, "usb3" }, 104 { 61, "vde" }, 105 { 62, "bsea" }, 106 { 63, "bsev" }, 107 { 65, "uartd" }, 108 { 67, "i2c3" }, 109 { 68, "spi4" }, 110 { 69, "sdmmc3" }, 111 { 70, "pcie" }, 112 { 71, "owr" }, 113 { 72, "afi" }, 114 { 73, "csite" }, 115 { 76, "la" }, 116 { 77, "trace" }, 117 { 78, "soc_therm" }, 118 { 79, "dtv" }, 119 { 81, "i2cslow" }, 120 { 82, "dsib" }, 121 { 83, "tsec" }, 122 { 89, "xusb_host" }, 123 { 91, "msenc" }, 124 { 92, "csus" }, 125 { 99, "mselect" }, 126 { 100, "tsensor" }, 127 { 101, "i2s3" }, 128 { 102, "i2s4" }, 129 { 103, "i2c4" }, 130 { 104, "spi5" }, 131 { 105, "spi6" }, 132 { 106, "d_audio" }, 133 { 107, "apbif" }, 134 { 108, "dam0" }, 135 { 109, "dam1" }, 136 { 110, "dam2" }, 137 { 111, "hda2codec_2x" }, 138 { 113, "audio0_2x" }, 139 { 114, "audio1_2x" }, 140 { 115, "audio2_2x" }, 141 { 116, "audio3_2x" }, 142 { 117, "audio4_2x" }, 143 { 118, "spdif_2x" }, 144 { 119, "actmon" }, 145 { 120, "extern1" }, 146 { 121, "extern2" }, 147 { 122, "extern3" }, 148 { 123, "sata_oob" }, 149 { 124, "sata" }, 150 { 125, "hda" }, 151 { 127, "se" }, 152 { 128, "hda2hdmi" }, 153 { 129, "sata_cold" }, 154 { 136, "cec" }, 155 { 144, "cilab" }, 156 { 145, "cilcd" }, 157 { 146, "cile" }, 158 { 147, "dsialp" }, 159 { 148, "dsiblp" }, 160 { 149, "entropy" }, 161 { 150, "dds" }, 162 { 152, "dp2" }, 163 { 153, "amx" }, 164 { 154, "adx" }, 165 { 156, "xusb_ss" }, 166 { 166, "i2c6" }, 167 { 171, "vim2_clk" }, 168 { 176, "hdmi_audio" }, 169 { 177, "clk72mhz" }, 170 { 178, "vic03" }, 171 { 180, "adx1" }, 172 { 181, "dpaux" }, 173 { 182, "sor0" }, 174 { 184, "gpu" }, 175 { 185, "amx1" }, 176 { 192, "uartb" }, 177 { 193, "vfir" }, 178 { 194, "spdif_in" }, 179 { 195, "spdif_out" }, 180 { 196, "vi" }, 181 { 197, "vi_sensor" }, 182 { 198, "fuse" }, 183 { 199, "fuse_burn" }, 184 { 200, "clk_32k" }, 185 { 201, "clk_m" }, 186 { 202, "clk_m_div2" }, 187 { 203, "clk_m_div4" }, 188 { 204, "pll_ref" }, 189 { 205, "pll_c" }, 190 { 206, "pll_c_out1" }, 191 { 207, "pll_c2" }, 192 { 208, "pll_c3" }, 193 { 209, "pll_m" }, 194 { 210, "pll_m_out1" }, 195 { 211, "pll_p_out0" }, 196 { 212, "pll_p_out1" }, 197 { 213, "pll_p_out2" }, 198 { 214, "pll_p_out3" }, 199 { 215, "pll_p_out4" }, 200 { 216, "pll_a" }, 201 { 217, "pll_a_out0" }, 202 { 218, "pll_d" }, 203 { 219, "pll_d_out0" }, 204 { 220, "pll_d2" }, 205 { 221, "pll_d2_out0" }, 206 { 222, "pll_u" }, 207 { 223, "pll_u_480m" }, 208 { 224, "pll_u_60m" }, 209 { 225, "pll_u_48m" }, 210 { 226, "pll_u_12m" }, 211 { 229, "pll_re_vco" }, 212 { 230, "pll_re_out" }, 213 { 231, "pll_e" }, 214 { 232, "spdif_in_sync" }, 215 { 233, "i2s0_sync" }, 216 { 234, "i2s1_sync" }, 217 { 235, "i2s2_sync" }, 218 { 236, "i2s3_sync" }, 219 { 237, "i2s4_sync" }, 220 { 238, "vimclk_sync" }, 221 { 239, "audio0" }, 222 { 240, "audio1" }, 223 { 241, "audio2" }, 224 { 242, "audio3" }, 225 { 243, "audio4" }, 226 { 244, "spdif" }, 227 { 245, "clk_out_1" }, 228 { 246, "clk_out_2" }, 229 { 247, "clk_out_3" }, 230 { 248, "blink" }, 231 { 252, "xusb_host_src" }, 232 { 253, "xusb_falcon_src" }, 233 { 254, "xusb_fs_src" }, 234 { 255, "xusb_ss_src" }, 235 { 256, "xusb_dev_src" }, 236 { 257, "xusb_dev" }, 237 { 258, "xusb_hs_src" }, 238 { 259, "sclk" }, 239 { 260, "hclk" }, 240 { 261, "pclk" }, 241 { 264, "dfll_ref" }, 242 { 265, "dfll_soc" }, 243 { 266, "vi_sensor2" }, 244 { 267, "pll_p_out5" }, 245 { 268, "cml0" }, 246 { 269, "cml1" }, 247 { 270, "pll_c4" }, 248 { 271, "pll_dp" }, 249 { 272, "pll_e_mux" }, 250 { 273, "pll_d_dsi_out" }, 251 { 300, "audio0_mux" }, 252 { 301, "audio1_mux" }, 253 { 302, "audio2_mux" }, 254 { 303, "audio3_mux" }, 255 { 304, "audio4_mux" }, 256 { 305, "spdif_mux" }, 257 { 306, "clk_out_1_mux" }, 258 { 307, "clk_out_2_mux" }, 259 { 308, "clk_out_3_mux" }, 260 { 311, "sor0_lvds" }, 261 { 312, "xusb_ss_div2" }, 262 { 313, "pll_m_ud" }, 263 { 314, "pll_c_ud" }, 264 { 227, "pll_x" }, 265 { 228, "pll_x_out0" }, 266 { 262, "cclk_g" }, 267 { 263, "cclk_lp" }, 268 { 315, "clk_max" }, 269 }; 270 271 static struct clk *tegra124_car_clock_get(void *, const char *); 272 static void tegra124_car_clock_put(void *, struct clk *); 273 static u_int tegra124_car_clock_get_rate(void *, struct clk *); 274 static int tegra124_car_clock_set_rate(void *, struct clk *, u_int); 275 static int tegra124_car_clock_enable(void *, struct clk *); 276 static int tegra124_car_clock_disable(void *, struct clk *); 277 static int tegra124_car_clock_set_parent(void *, struct clk *, 278 struct clk *); 279 static struct clk *tegra124_car_clock_get_parent(void *, struct clk *); 280 281 static const struct clk_funcs tegra124_car_clock_funcs = { 282 .get = tegra124_car_clock_get, 283 .put = tegra124_car_clock_put, 284 .get_rate = tegra124_car_clock_get_rate, 285 .set_rate = tegra124_car_clock_set_rate, 286 .enable = tegra124_car_clock_enable, 287 .disable = tegra124_car_clock_disable, 288 .set_parent = tegra124_car_clock_set_parent, 289 .get_parent = tegra124_car_clock_get_parent, 290 }; 291 292 #define CLK_FIXED(_name, _rate) { \ 293 .base = { .name = (_name) }, .type = TEGRA_CLK_FIXED, \ 294 .u = { .fixed = { .rate = (_rate) } } \ 295 } 296 297 #define CLK_PLL(_name, _parent, _base, _divm, _divn, _divp) { \ 298 .base = { .name = (_name) }, .type = TEGRA_CLK_PLL, \ 299 .parent = (_parent), \ 300 .u = { \ 301 .pll = { \ 302 .base_reg = (_base), \ 303 .divm_mask = (_divm), \ 304 .divn_mask = (_divn), \ 305 .divp_mask = (_divp), \ 306 } \ 307 } \ 308 } 309 310 #define CLK_MUX(_name, _reg, _bits, _p) { \ 311 .base = { .name = (_name) }, .type = TEGRA_CLK_MUX, \ 312 .u = { \ 313 .mux = { \ 314 .nparents = __arraycount(_p), \ 315 .parents = (_p), \ 316 .reg = (_reg), \ 317 .bits = (_bits) \ 318 } \ 319 } \ 320 } 321 322 #define CLK_FIXED_DIV(_name, _parent, _div) { \ 323 .base = { .name = (_name) }, .type = TEGRA_CLK_FIXED_DIV, \ 324 .parent = (_parent), \ 325 .u = { \ 326 .fixed_div = { \ 327 .div = (_div) \ 328 } \ 329 } \ 330 } 331 332 #define CLK_DIV(_name, _parent, _reg, _bits) { \ 333 .base = { .name = (_name) }, .type = TEGRA_CLK_DIV, \ 334 .parent = (_parent), \ 335 .u = { \ 336 .div = { \ 337 .reg = (_reg), \ 338 .bits = (_bits) \ 339 } \ 340 } \ 341 } 342 343 #define CLK_GATE(_name, _parent, _set, _clr, _bits) { \ 344 .base = { .name = (_name), .flags = CLK_SET_RATE_PARENT }, \ 345 .type = TEGRA_CLK_GATE, \ 346 .parent = (_parent), \ 347 .u = { \ 348 .gate = { \ 349 .set_reg = (_set), \ 350 .clr_reg = (_clr), \ 351 .bits = (_bits), \ 352 } \ 353 } \ 354 } 355 356 #define CLK_GATE_L(_name, _parent, _bits) \ 357 CLK_GATE(_name, _parent, \ 358 CAR_CLK_ENB_L_SET_REG, CAR_CLK_ENB_L_CLR_REG, \ 359 _bits) 360 361 #define CLK_GATE_H(_name, _parent, _bits) \ 362 CLK_GATE(_name, _parent, \ 363 CAR_CLK_ENB_H_SET_REG, CAR_CLK_ENB_H_CLR_REG, \ 364 _bits) 365 366 #define CLK_GATE_U(_name, _parent, _bits) \ 367 CLK_GATE(_name, _parent, \ 368 CAR_CLK_ENB_U_SET_REG, CAR_CLK_ENB_U_CLR_REG, \ 369 _bits) 370 371 #define CLK_GATE_V(_name, _parent, _bits) \ 372 CLK_GATE(_name, _parent, \ 373 CAR_CLK_ENB_V_SET_REG, CAR_CLK_ENB_V_CLR_REG, \ 374 _bits) 375 376 #define CLK_GATE_W(_name, _parent, _bits) \ 377 CLK_GATE(_name, _parent, \ 378 CAR_CLK_ENB_W_SET_REG, CAR_CLK_ENB_W_CLR_REG, \ 379 _bits) 380 381 #define CLK_GATE_X(_name, _parent, _bits) \ 382 CLK_GATE(_name, _parent, \ 383 CAR_CLK_ENB_X_SET_REG, CAR_CLK_ENB_X_CLR_REG, \ 384 _bits) 385 386 #define CLK_GATE_SIMPLE(_name, _parent, _reg, _bits) \ 387 CLK_GATE(_name, _parent, _reg, _reg, _bits) 388 389 static const char *mux_uart_p[] = 390 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 391 "pll_m_out0", NULL, "clk_m" }; 392 static const char *mux_sdmmc_p[] = 393 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 394 "pll_m_out0", "pll_e_out0", "clk_m" }; 395 static const char *mux_i2c_p[] = 396 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 397 "pll_m_out0", NULL, "clk_m" }; 398 static const char *mux_spi_p[] = 399 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 400 "pll_m_out0", NULL, "clk_m" }; 401 static const char *mux_sata_p[] = 402 { "pll_p_out0", NULL, "pll_c_out0", NULL, "pll_m_out0", NULL, "clk_m" }; 403 static const char *mux_hda_p[] = 404 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 405 "pll_m_out0", NULL, "clk_m" }; 406 static const char *mux_mselect_p[] = 407 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 408 "pll_m_out0", "clk_s", "clk_m" }; 409 static const char *mux_tsensor_p[] = 410 { "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", "clk_m", 411 NULL, "clk_s" }; 412 static const char *mux_soc_therm_p[] = 413 { "pll_m_out0", "pll_c_out0", "pll_p_out0", "pll_a_out0", "pll_c2_out0", 414 "pll_c3_out0" }; 415 static const char *mux_host1x_p[] = 416 { "pll_m_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 417 "pll_p_out0", NULL, "pll_a_out0" }; 418 static const char *mux_disp_p[] = 419 { "pll_p_out0", "pll_m_out0", "pll_d_out0", "pll_a_out0", "pll_c_out0", 420 "pll_d2_out0", "clk_m" }; 421 static const char *mux_hdmi_p[] = 422 { "pll_p_out0", "pll_m_out0", "pll_d_out0", "pll_a_out0", "pll_c_out0", 423 "pll_d2_out0", "clk_m" }; 424 static const char *mux_xusb_host_p[] = 425 { "clk_m", "pll_p_out0", "pll_c2_out0", "pll_c_out0", "pll_c3_out0", 426 "pll_re_out" }; 427 static const char *mux_xusb_ss_p[] = 428 { "clk_m", "pll_re_out", "clk_s", "pll_u_480", 429 "pll_c_out0", "pll_c2_out0", "pll_c3_out0", NULL }; 430 static const char *mux_xusb_fs_p[] = 431 { "clk_m", NULL, "pll_u_48", NULL, "pll_p_out0", NULL, "pll_u_480" }; 432 433 static struct tegra_clk tegra124_car_clocks[] = { 434 CLK_FIXED("clk_m", TEGRA124_REF_FREQ), 435 436 CLK_PLL("pll_p", "clk_m", CAR_PLLP_BASE_REG, 437 CAR_PLLP_BASE_DIVM, CAR_PLLP_BASE_DIVN, CAR_PLLP_BASE_DIVP), 438 CLK_PLL("pll_c", "clk_m", CAR_PLLC_BASE_REG, 439 CAR_PLLC_BASE_DIVM, CAR_PLLC_BASE_DIVN, CAR_PLLC_BASE_DIVP), 440 CLK_PLL("pll_u", "clk_m", CAR_PLLU_BASE_REG, 441 CAR_PLLU_BASE_DIVM, CAR_PLLU_BASE_DIVN, CAR_PLLU_BASE_VCO_FREQ), 442 CLK_PLL("pll_x", "clk_m", CAR_PLLX_BASE_REG, 443 CAR_PLLX_BASE_DIVM, CAR_PLLX_BASE_DIVN, CAR_PLLX_BASE_DIVP), 444 CLK_PLL("pll_e", "clk_m", CAR_PLLE_BASE_REG, 445 CAR_PLLE_BASE_DIVM, CAR_PLLE_BASE_DIVN, CAR_PLLE_BASE_DIVP_CML), 446 CLK_PLL("pll_d", "clk_m", CAR_PLLD_BASE_REG, 447 CAR_PLLD_BASE_DIVM, CAR_PLLD_BASE_DIVN, CAR_PLLD_BASE_DIVP), 448 CLK_PLL("pll_d2", "clk_m", CAR_PLLD2_BASE_REG, 449 CAR_PLLD2_BASE_DIVM, CAR_PLLD2_BASE_DIVN, CAR_PLLD2_BASE_DIVP), 450 CLK_PLL("pll_re", "clk_m", CAR_PLLREFE_BASE_REG, 451 CAR_PLLREFE_BASE_DIVM, CAR_PLLREFE_BASE_DIVN, CAR_PLLREFE_BASE_DIVP), 452 453 CLK_FIXED_DIV("pll_p_out0", "pll_p", 1), 454 CLK_FIXED_DIV("pll_u_480", "pll_u", 1), 455 CLK_FIXED_DIV("pll_u_60", "pll_u", 8), 456 CLK_FIXED_DIV("pll_u_48", "pll_u", 10), 457 CLK_FIXED_DIV("pll_u_12", "pll_u", 40), 458 CLK_FIXED_DIV("pll_d_out", "pll_d", 1), 459 CLK_FIXED_DIV("pll_d_out0", "pll_d", 2), 460 CLK_FIXED_DIV("pll_d2_out0", "pll_d2", 1), 461 CLK_FIXED_DIV("pll_re_out", "pll_re", 1), 462 463 CLK_MUX("mux_uarta", CAR_CLKSRC_UARTA_REG, CAR_CLKSRC_UART_SRC, 464 mux_uart_p), 465 CLK_MUX("mux_uartb", CAR_CLKSRC_UARTB_REG, CAR_CLKSRC_UART_SRC, 466 mux_uart_p), 467 CLK_MUX("mux_uartc", CAR_CLKSRC_UARTC_REG, CAR_CLKSRC_UART_SRC, 468 mux_uart_p), 469 CLK_MUX("mux_uartd", CAR_CLKSRC_UARTD_REG, CAR_CLKSRC_UART_SRC, 470 mux_uart_p), 471 CLK_MUX("mux_sdmmc1", CAR_CLKSRC_SDMMC1_REG, CAR_CLKSRC_SDMMC_SRC, 472 mux_sdmmc_p), 473 CLK_MUX("mux_sdmmc2", CAR_CLKSRC_SDMMC2_REG, CAR_CLKSRC_SDMMC_SRC, 474 mux_sdmmc_p), 475 CLK_MUX("mux_sdmmc3", CAR_CLKSRC_SDMMC3_REG, CAR_CLKSRC_SDMMC_SRC, 476 mux_sdmmc_p), 477 CLK_MUX("mux_sdmmc4", CAR_CLKSRC_SDMMC4_REG, CAR_CLKSRC_SDMMC_SRC, 478 mux_sdmmc_p), 479 CLK_MUX("mux_i2c1", CAR_CLKSRC_I2C1_REG, CAR_CLKSRC_I2C_SRC, mux_i2c_p), 480 CLK_MUX("mux_i2c2", CAR_CLKSRC_I2C2_REG, CAR_CLKSRC_I2C_SRC, mux_i2c_p), 481 CLK_MUX("mux_i2c3", CAR_CLKSRC_I2C3_REG, CAR_CLKSRC_I2C_SRC, mux_i2c_p), 482 CLK_MUX("mux_i2c4", CAR_CLKSRC_I2C4_REG, CAR_CLKSRC_I2C_SRC, mux_i2c_p), 483 CLK_MUX("mux_i2c5", CAR_CLKSRC_I2C5_REG, CAR_CLKSRC_I2C_SRC, mux_i2c_p), 484 CLK_MUX("mux_i2c6", CAR_CLKSRC_I2C6_REG, CAR_CLKSRC_I2C_SRC, mux_i2c_p), 485 CLK_MUX("mux_spi1", CAR_CLKSRC_SPI1_REG, CAR_CLKSRC_SPI_SRC, mux_spi_p), 486 CLK_MUX("mux_spi2", CAR_CLKSRC_SPI2_REG, CAR_CLKSRC_SPI_SRC, mux_spi_p), 487 CLK_MUX("mux_spi3", CAR_CLKSRC_SPI3_REG, CAR_CLKSRC_SPI_SRC, mux_spi_p), 488 CLK_MUX("mux_spi4", CAR_CLKSRC_SPI4_REG, CAR_CLKSRC_SPI_SRC, mux_spi_p), 489 CLK_MUX("mux_spi5", CAR_CLKSRC_SPI5_REG, CAR_CLKSRC_SPI_SRC, mux_spi_p), 490 CLK_MUX("mux_spi6", CAR_CLKSRC_SPI6_REG, CAR_CLKSRC_SPI_SRC, mux_spi_p), 491 CLK_MUX("mux_sata_oob", 492 CAR_CLKSRC_SATA_OOB_REG, CAR_CLKSRC_SATA_OOB_SRC, mux_sata_p), 493 CLK_MUX("mux_sata", 494 CAR_CLKSRC_SATA_REG, CAR_CLKSRC_SATA_SRC, mux_sata_p), 495 CLK_MUX("mux_hda2codec_2x", 496 CAR_CLKSRC_HDA2CODEC_2X_REG, CAR_CLKSRC_HDA2CODEC_2X_SRC, 497 mux_hda_p), 498 CLK_MUX("mux_hda", 499 CAR_CLKSRC_HDA_REG, CAR_CLKSRC_HDA_SRC, mux_hda_p), 500 CLK_MUX("mux_soc_therm", 501 CAR_CLKSRC_SOC_THERM_REG, CAR_CLKSRC_SOC_THERM_SRC, 502 mux_soc_therm_p), 503 CLK_MUX("mux_mselect", 504 CAR_CLKSRC_MSELECT_REG, CAR_CLKSRC_MSELECT_SRC, 505 mux_mselect_p), 506 CLK_MUX("mux_tsensor", 507 CAR_CLKSRC_TSENSOR_REG, CAR_CLKSRC_TSENSOR_SRC, 508 mux_tsensor_p), 509 CLK_MUX("mux_host1x", 510 CAR_CLKSRC_HOST1X_REG, CAR_CLKSRC_HOST1X_SRC, 511 mux_host1x_p), 512 CLK_MUX("mux_disp1", 513 CAR_CLKSRC_DISP1_REG, CAR_CLKSRC_DISP_SRC, 514 mux_disp_p), 515 CLK_MUX("mux_disp2", 516 CAR_CLKSRC_DISP2_REG, CAR_CLKSRC_DISP_SRC, 517 mux_disp_p), 518 CLK_MUX("mux_hdmi", 519 CAR_CLKSRC_HDMI_REG, CAR_CLKSRC_HDMI_SRC, 520 mux_hdmi_p), 521 CLK_MUX("mux_xusb_host", 522 CAR_CLKSRC_XUSB_HOST_REG, CAR_CLKSRC_XUSB_HOST_SRC, 523 mux_xusb_host_p), 524 CLK_MUX("mux_xusb_falcon", 525 CAR_CLKSRC_XUSB_FALCON_REG, CAR_CLKSRC_XUSB_FALCON_SRC, 526 mux_xusb_host_p), 527 CLK_MUX("mux_xusb_ss", 528 CAR_CLKSRC_XUSB_SS_REG, CAR_CLKSRC_XUSB_SS_SRC, 529 mux_xusb_ss_p), 530 CLK_MUX("mux_xusb_fs", 531 CAR_CLKSRC_XUSB_FS_REG, CAR_CLKSRC_XUSB_FS_SRC, 532 mux_xusb_fs_p), 533 534 CLK_DIV("div_uarta", "mux_uarta", 535 CAR_CLKSRC_UARTA_REG, CAR_CLKSRC_UART_DIV), 536 CLK_DIV("div_uartb", "mux_uartb", 537 CAR_CLKSRC_UARTB_REG, CAR_CLKSRC_UART_DIV), 538 CLK_DIV("div_uartc", "mux_uartc", 539 CAR_CLKSRC_UARTC_REG, CAR_CLKSRC_UART_DIV), 540 CLK_DIV("div_uartd", "mux_uartd", 541 CAR_CLKSRC_UARTD_REG, CAR_CLKSRC_UART_DIV), 542 CLK_DIV("div_sdmmc1", "mux_sdmmc1", 543 CAR_CLKSRC_SDMMC1_REG, CAR_CLKSRC_SDMMC_DIV), 544 CLK_DIV("div_sdmmc2", "mux_sdmmc2", 545 CAR_CLKSRC_SDMMC2_REG, CAR_CLKSRC_SDMMC_DIV), 546 CLK_DIV("div_sdmmc3", "mux_sdmmc3", 547 CAR_CLKSRC_SDMMC3_REG, CAR_CLKSRC_SDMMC_DIV), 548 CLK_DIV("div_sdmmc4", "mux_sdmmc4", 549 CAR_CLKSRC_SDMMC4_REG, CAR_CLKSRC_SDMMC_DIV), 550 CLK_DIV("div_i2c1", "mux_i2c1", 551 CAR_CLKSRC_I2C1_REG, CAR_CLKSRC_I2C_DIV), 552 CLK_DIV("div_i2c2", "mux_i2c2", 553 CAR_CLKSRC_I2C2_REG, CAR_CLKSRC_I2C_DIV), 554 CLK_DIV("div_i2c3", "mux_i2c3", 555 CAR_CLKSRC_I2C3_REG, CAR_CLKSRC_I2C_DIV), 556 CLK_DIV("div_i2c4", "mux_i2c4", 557 CAR_CLKSRC_I2C4_REG, CAR_CLKSRC_I2C_DIV), 558 CLK_DIV("div_i2c5", "mux_i2c5", 559 CAR_CLKSRC_I2C5_REG, CAR_CLKSRC_I2C_DIV), 560 CLK_DIV("div_i2c6", "mux_i2c6", 561 CAR_CLKSRC_I2C6_REG, CAR_CLKSRC_I2C_DIV), 562 CLK_DIV("div_spi1", "mux_spi1", 563 CAR_CLKSRC_SPI1_REG, CAR_CLKSRC_SPI_DIV), 564 CLK_DIV("div_spi2", "mux_spi2", 565 CAR_CLKSRC_SPI2_REG, CAR_CLKSRC_SPI_DIV), 566 CLK_DIV("div_spi3", "mux_spi3", 567 CAR_CLKSRC_SPI3_REG, CAR_CLKSRC_SPI_DIV), 568 CLK_DIV("div_spi4", "mux_spi4", 569 CAR_CLKSRC_SPI4_REG, CAR_CLKSRC_SPI_DIV), 570 CLK_DIV("div_spi5", "mux_spi5", 571 CAR_CLKSRC_SPI5_REG, CAR_CLKSRC_SPI_DIV), 572 CLK_DIV("div_spi6", "mux_spi6", 573 CAR_CLKSRC_SPI6_REG, CAR_CLKSRC_SPI_DIV), 574 CLK_DIV("div_sata_oob", "mux_sata_oob", 575 CAR_CLKSRC_SATA_OOB_REG, CAR_CLKSRC_SATA_OOB_DIV), 576 CLK_DIV("div_sata", "mux_sata", 577 CAR_CLKSRC_SATA_REG, CAR_CLKSRC_SATA_DIV), 578 CLK_DIV("div_hda2codec_2x", "mux_hda2codec_2x", 579 CAR_CLKSRC_HDA2CODEC_2X_REG, CAR_CLKSRC_HDA2CODEC_2X_DIV), 580 CLK_DIV("div_hda", "mux_hda", 581 CAR_CLKSRC_HDA_REG, CAR_CLKSRC_HDA_DIV), 582 CLK_DIV("div_soc_therm", "mux_soc_therm", 583 CAR_CLKSRC_SOC_THERM_REG, CAR_CLKSRC_SOC_THERM_DIV), 584 CLK_DIV("div_mselect", "mux_mselect", 585 CAR_CLKSRC_MSELECT_REG, CAR_CLKSRC_MSELECT_DIV), 586 CLK_DIV("div_tsensor", "mux_tsensor", 587 CAR_CLKSRC_TSENSOR_REG, CAR_CLKSRC_TSENSOR_DIV), 588 CLK_DIV("div_host1x", "mux_host1x", 589 CAR_CLKSRC_HOST1X_REG, CAR_CLKSRC_HOST1X_CLK_DIVISOR), 590 CLK_DIV("div_hdmi", "mux_hdmi", 591 CAR_CLKSRC_HDMI_REG, CAR_CLKSRC_HDMI_DIV), 592 CLK_DIV("div_pll_p_out5", "pll_p", 593 CAR_PLLP_OUTC_REG, CAR_PLLP_OUTC_OUT5_RATIO), 594 CLK_DIV("xusb_host_src", "mux_xusb_host", 595 CAR_CLKSRC_XUSB_HOST_REG, CAR_CLKSRC_XUSB_HOST_DIV), 596 CLK_DIV("xusb_ss_src", "mux_xusb_ss", 597 CAR_CLKSRC_XUSB_SS_REG, CAR_CLKSRC_XUSB_SS_DIV), 598 CLK_DIV("xusb_fs_src", "mux_xusb_fs", 599 CAR_CLKSRC_XUSB_FS_REG, CAR_CLKSRC_XUSB_FS_DIV), 600 CLK_DIV("xusb_falcon_src", "mux_xusb_falcon", 601 CAR_CLKSRC_XUSB_FALCON_REG, CAR_CLKSRC_XUSB_FALCON_DIV), 602 603 CLK_GATE_L("uarta", "div_uarta", CAR_DEV_L_UARTA), 604 CLK_GATE_L("uartb", "div_uartb", CAR_DEV_L_UARTB), 605 CLK_GATE_H("uartc", "div_uartc", CAR_DEV_H_UARTC), 606 CLK_GATE_U("uartd", "div_uartd", CAR_DEV_U_UARTD), 607 CLK_GATE_L("sdmmc1", "div_sdmmc1", CAR_DEV_L_SDMMC1), 608 CLK_GATE_L("sdmmc2", "div_sdmmc2", CAR_DEV_L_SDMMC2), 609 CLK_GATE_U("sdmmc3", "div_sdmmc3", CAR_DEV_U_SDMMC3), 610 CLK_GATE_L("sdmmc4", "div_sdmmc4", CAR_DEV_L_SDMMC4), 611 CLK_GATE_L("i2c1", "div_i2c1", CAR_DEV_L_I2C1), 612 CLK_GATE_H("i2c2", "div_i2c2", CAR_DEV_H_I2C2), 613 CLK_GATE_U("i2c3", "div_i2c3", CAR_DEV_U_I2C3), 614 CLK_GATE_V("i2c4", "div_i2c4", CAR_DEV_V_I2C4), 615 CLK_GATE_H("i2c5", "div_i2c5", CAR_DEV_H_I2C5), 616 CLK_GATE_X("i2c6", "div_i2c6", CAR_DEV_X_I2C6), 617 CLK_GATE_H("spi1", "div_spi1", CAR_DEV_H_SPI1), 618 CLK_GATE_H("spi2", "div_spi2", CAR_DEV_H_SPI2), 619 CLK_GATE_H("spi3", "div_spi3", CAR_DEV_H_SPI3), 620 CLK_GATE_U("spi4", "div_spi4", CAR_DEV_U_SPI4), 621 CLK_GATE_V("spi5", "div_spi5", CAR_DEV_V_SPI5), 622 CLK_GATE_V("spi6", "div_spi6", CAR_DEV_V_SPI6), 623 CLK_GATE_L("usbd", "pll_u_480", CAR_DEV_L_USBD), 624 CLK_GATE_H("usb2", "pll_u_480", CAR_DEV_H_USB2), 625 CLK_GATE_H("usb3", "pll_u_480", CAR_DEV_H_USB3), 626 CLK_GATE_V("sata_oob", "div_sata_oob", CAR_DEV_V_SATA_OOB), 627 CLK_GATE_V("sata", "div_sata", CAR_DEV_V_SATA), 628 CLK_GATE_SIMPLE("cml0", "pll_e", 629 CAR_PLLE_AUX_REG, CAR_PLLE_AUX_CML0_OEN), 630 CLK_GATE_SIMPLE("cml1", "pll_e", 631 CAR_PLLE_AUX_REG, CAR_PLLE_AUX_CML1_OEN), 632 CLK_GATE_V("hda2codec_2x", "div_hda2codec_2x", CAR_DEV_V_HDA2CODEC_2X), 633 CLK_GATE_V("hda", "div_hda", CAR_DEV_V_HDA), 634 CLK_GATE_W("hda2hdmi", "clk_m", CAR_DEV_W_HDA2HDMICODEC), 635 CLK_GATE_W("cec", "clk_m", CAR_DEV_W_CEC), 636 CLK_GATE_H("fuse", "clk_m", CAR_DEV_H_FUSE), 637 CLK_GATE_U("soc_therm", "div_soc_therm", CAR_DEV_U_SOC_THERM), 638 CLK_GATE_V("mselect", "div_mselect", CAR_DEV_V_MSELECT), 639 CLK_GATE_V("tsensor", "div_tsensor", CAR_DEV_V_TSENSOR), 640 CLK_GATE_L("host1x", "div_host1x", CAR_DEV_L_HOST1X), 641 CLK_GATE_L("disp1", "mux_disp1", CAR_DEV_L_DISP1), 642 CLK_GATE_L("disp2", "mux_disp2", CAR_DEV_L_DISP2), 643 CLK_GATE_H("hdmi", "div_hdmi", CAR_DEV_H_HDMI), 644 CLK_GATE_SIMPLE("pll_p_out5", "div_pll_p_out5", 645 CAR_PLLP_OUTC_REG, CAR_PLLP_OUTC_OUT5_CLKEN), 646 CLK_GATE_U("xusb_host", "xusb_host_src", CAR_DEV_U_XUSB_HOST), 647 CLK_GATE_W("xusb_ss", "xusb_ss_src", CAR_DEV_W_XUSB_SS), 648 CLK_GATE_X("gpu", "pll_ref", CAR_DEV_X_GPU), 649 CLK_GATE_H("apbdma", "clk_m", CAR_DEV_H_APBDMA), 650 CLK_GATE_U("pcie", "mselect", CAR_DEV_U_PCIE), 651 CLK_GATE_U("afi", "mselect", CAR_DEV_U_AFI), 652 }; 653 654 struct tegra124_init_parent { 655 const char *clock; 656 const char *parent; 657 } tegra124_init_parents[] = { 658 { "sata_oob", "pll_p_out0" }, 659 { "sata", "pll_p_out0" }, 660 { "hda", "pll_p_out0" }, 661 { "hda2codec_2x", "pll_p_out0" }, 662 { "soc_therm", "pll_p_out0" }, 663 { "tsensor", "clk_m" }, 664 { "xusb_host_src", "pll_p_out0" }, 665 { "xusb_falcon_src", "pll_p_out0" }, 666 { "xusb_ss_src", "pll_u_480" }, 667 { "xusb_fs_src", "pll_u_48" }, 668 { "host1x", "pll_p_out0" }, 669 }; 670 671 struct tegra124_car_rst { 672 u_int set_reg; 673 u_int clr_reg; 674 u_int mask; 675 }; 676 677 static struct tegra124_car_reset_reg { 678 u_int set_reg; 679 u_int clr_reg; 680 } tegra124_car_reset_regs[] = { 681 { CAR_RST_DEV_L_SET_REG, CAR_RST_DEV_L_CLR_REG }, 682 { CAR_RST_DEV_H_SET_REG, CAR_RST_DEV_H_CLR_REG }, 683 { CAR_RST_DEV_U_SET_REG, CAR_RST_DEV_U_CLR_REG }, 684 { CAR_RST_DEV_V_SET_REG, CAR_RST_DEV_V_CLR_REG }, 685 { CAR_RST_DEV_W_SET_REG, CAR_RST_DEV_W_CLR_REG }, 686 { CAR_RST_DEV_X_SET_REG, CAR_RST_DEV_X_CLR_REG }, 687 }; 688 689 static void * tegra124_car_reset_acquire(device_t, const void *, size_t); 690 static void tegra124_car_reset_release(device_t, void *); 691 static int tegra124_car_reset_assert(device_t, void *); 692 static int tegra124_car_reset_deassert(device_t, void *); 693 694 static const struct fdtbus_reset_controller_func tegra124_car_fdtreset_funcs = { 695 .acquire = tegra124_car_reset_acquire, 696 .release = tegra124_car_reset_release, 697 .reset_assert = tegra124_car_reset_assert, 698 .reset_deassert = tegra124_car_reset_deassert, 699 }; 700 701 struct tegra124_car_softc { 702 device_t sc_dev; 703 bus_space_tag_t sc_bst; 704 bus_space_handle_t sc_bsh; 705 706 struct clk_domain sc_clkdom; 707 708 u_int sc_clock_cells; 709 u_int sc_reset_cells; 710 711 kmutex_t sc_rndlock; 712 krndsource_t sc_rndsource; 713 }; 714 715 static void tegra124_car_init(struct tegra124_car_softc *); 716 static void tegra124_car_utmip_init(struct tegra124_car_softc *); 717 static void tegra124_car_xusb_init(struct tegra124_car_softc *); 718 static void tegra124_car_watchdog_init(struct tegra124_car_softc *); 719 static void tegra124_car_parent_init(struct tegra124_car_softc *); 720 721 static void tegra124_car_rnd_attach(device_t); 722 static void tegra124_car_rnd_callback(size_t, void *); 723 724 CFATTACH_DECL_NEW(tegra124_car, sizeof(struct tegra124_car_softc), 725 tegra124_car_match, tegra124_car_attach, NULL, NULL); 726 727 static const struct device_compatible_entry compat_data[] = { 728 { .compat = "nvidia,tegra124-car" }, 729 DEVICE_COMPAT_EOL 730 }; 731 732 static int 733 tegra124_car_match(device_t parent, cfdata_t cf, void *aux) 734 { 735 struct fdt_attach_args * const faa = aux; 736 737 #if 0 738 return of_compatible_match(faa->faa_phandle, compat_data); 739 #else 740 return of_compatible_match(faa->faa_phandle, compat_data) ? 999 : 0; 741 #endif 742 } 743 744 static void 745 tegra124_car_attach(device_t parent, device_t self, void *aux) 746 { 747 struct tegra124_car_softc * const sc = device_private(self); 748 struct fdt_attach_args * const faa = aux; 749 const int phandle = faa->faa_phandle; 750 bus_addr_t addr; 751 bus_size_t size; 752 int error, n; 753 754 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 755 aprint_error(": couldn't get registers\n"); 756 return; 757 } 758 759 sc->sc_dev = self; 760 sc->sc_bst = faa->faa_bst; 761 error = bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh); 762 if (error) { 763 aprint_error(": couldn't map %#" PRIxBUSADDR ": %d", addr, error); 764 return; 765 } 766 if (of_getprop_uint32(phandle, "#clock-cells", &sc->sc_clock_cells)) 767 sc->sc_clock_cells = 1; 768 if (of_getprop_uint32(phandle, "#reset-cells", &sc->sc_reset_cells)) 769 sc->sc_reset_cells = 1; 770 771 aprint_naive("\n"); 772 aprint_normal(": CAR\n"); 773 774 sc->sc_clkdom.name = device_xname(self); 775 sc->sc_clkdom.funcs = &tegra124_car_clock_funcs; 776 sc->sc_clkdom.priv = sc; 777 for (n = 0; n < __arraycount(tegra124_car_clocks); n++) { 778 tegra124_car_clocks[n].base.domain = &sc->sc_clkdom; 779 clk_attach(&tegra124_car_clocks[n].base); 780 } 781 782 fdtbus_register_clock_controller(self, phandle, 783 &tegra124_car_fdtclock_funcs); 784 fdtbus_register_reset_controller(self, phandle, 785 &tegra124_car_fdtreset_funcs); 786 787 tegra124_car_init(sc); 788 789 config_interrupts(self, tegra124_car_rnd_attach); 790 } 791 792 static void 793 tegra124_car_init(struct tegra124_car_softc *sc) 794 { 795 tegra124_car_parent_init(sc); 796 tegra124_car_utmip_init(sc); 797 tegra124_car_xusb_init(sc); 798 tegra124_car_watchdog_init(sc); 799 } 800 801 static void 802 tegra124_car_parent_init(struct tegra124_car_softc *sc) 803 { 804 struct clk *clk, *clk_parent; 805 int error; 806 u_int n; 807 808 for (n = 0; n < __arraycount(tegra124_init_parents); n++) { 809 clk = clk_get(&sc->sc_clkdom, tegra124_init_parents[n].clock); 810 KASSERT(clk != NULL); 811 clk_parent = clk_get(&sc->sc_clkdom, 812 tegra124_init_parents[n].parent); 813 KASSERT(clk_parent != NULL); 814 815 error = clk_set_parent(clk, clk_parent); 816 if (error) { 817 aprint_error_dev(sc->sc_dev, 818 "couldn't set '%s' parent to '%s': %d\n", 819 clk->name, clk_parent->name, error); 820 } 821 clk_put(clk_parent); 822 clk_put(clk); 823 } 824 } 825 826 static void 827 tegra124_car_utmip_init(struct tegra124_car_softc *sc) 828 { 829 bus_space_tag_t bst = sc->sc_bst; 830 bus_space_handle_t bsh = sc->sc_bsh; 831 832 const u_int enable_dly_count = 0x02; 833 const u_int stable_count = 0x2f; 834 const u_int active_dly_count = 0x04; 835 const u_int xtal_freq_count = 0x76; 836 837 tegra_reg_set_clear(bst, bsh, CAR_UTMIP_PLL_CFG2_REG, 838 __SHIFTIN(stable_count, CAR_UTMIP_PLL_CFG2_STABLE_COUNT) | 839 __SHIFTIN(active_dly_count, CAR_UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT), 840 CAR_UTMIP_PLL_CFG2_PD_SAMP_A_POWERDOWN | 841 CAR_UTMIP_PLL_CFG2_PD_SAMP_B_POWERDOWN | 842 CAR_UTMIP_PLL_CFG2_PD_SAMP_C_POWERDOWN | 843 CAR_UTMIP_PLL_CFG2_STABLE_COUNT | 844 CAR_UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT); 845 846 tegra_reg_set_clear(bst, bsh, CAR_UTMIP_PLL_CFG1_REG, 847 __SHIFTIN(enable_dly_count, CAR_UTMIP_PLL_CFG1_ENABLE_DLY_COUNT) | 848 __SHIFTIN(xtal_freq_count, CAR_UTMIP_PLL_CFG1_XTAL_FREQ_COUNT), 849 CAR_UTMIP_PLL_CFG1_ENABLE_DLY_COUNT | 850 CAR_UTMIP_PLL_CFG1_XTAL_FREQ_COUNT); 851 852 tegra_reg_set_clear(bst, bsh, CAR_UTMIP_PLL_CFG1_REG, 853 0, 854 CAR_UTMIP_PLL_CFG1_PLLU_POWERDOWN | 855 CAR_UTMIP_PLL_CFG1_PLL_ENABLE_POWERDOWN); 856 857 } 858 859 static void 860 tegra124_car_xusb_init(struct tegra124_car_softc *sc) 861 { 862 const bus_space_tag_t bst = sc->sc_bst; 863 const bus_space_handle_t bsh = sc->sc_bsh; 864 uint32_t val; 865 866 /* XXX do this all better */ 867 868 bus_space_write_4(bst, bsh, CAR_CLK_ENB_W_SET_REG, CAR_DEV_W_XUSB); 869 870 tegra_reg_set_clear(bst, bsh, CAR_PLLREFE_MISC_REG, 871 0, CAR_PLLREFE_MISC_IDDQ); 872 val = __SHIFTIN(25, CAR_PLLREFE_BASE_DIVN) | 873 __SHIFTIN(1, CAR_PLLREFE_BASE_DIVM); 874 bus_space_write_4(bst, bsh, CAR_PLLREFE_BASE_REG, val); 875 876 tegra_reg_set_clear(bst, bsh, CAR_PLLREFE_MISC_REG, 877 0, CAR_PLLREFE_MISC_LOCK_OVERRIDE); 878 tegra_reg_set_clear(bst, bsh, CAR_PLLREFE_BASE_REG, 879 CAR_PLLREFE_BASE_ENABLE, 0); 880 tegra_reg_set_clear(bst, bsh, CAR_PLLREFE_MISC_REG, 881 CAR_PLLREFE_MISC_LOCK_ENABLE, 0); 882 883 do { 884 delay(2); 885 val = bus_space_read_4(bst, bsh, CAR_PLLREFE_MISC_REG); 886 } while ((val & CAR_PLLREFE_MISC_LOCK) == 0); 887 888 tegra_reg_set_clear(bst, bsh, CAR_PLLE_MISC_REG, 889 CAR_PLLE_MISC_IDDQ_SWCTL, CAR_PLLE_MISC_IDDQ_OVERRIDE); 890 tegra_reg_set_clear(bst, bsh, CAR_PLLE_BASE_REG, 891 CAR_PLLE_BASE_ENABLE, 0); 892 tegra_reg_set_clear(bst, bsh, CAR_PLLE_MISC_REG, 893 CAR_PLLE_MISC_LOCK_ENABLE, 0); 894 895 do { 896 delay(2); 897 val = bus_space_read_4(bst, bsh, CAR_PLLE_MISC_REG); 898 } while ((val & CAR_PLLE_MISC_LOCK) == 0); 899 900 tegra_reg_set_clear(bst, bsh, CAR_CLKSRC_XUSB_SS_REG, 901 CAR_CLKSRC_XUSB_SS_HS_CLK_BYPASS, 0); 902 } 903 904 static void 905 tegra124_car_watchdog_init(struct tegra124_car_softc *sc) 906 { 907 const bus_space_tag_t bst = sc->sc_bst; 908 const bus_space_handle_t bsh = sc->sc_bsh; 909 910 /* Enable watchdog timer reset for system */ 911 tegra_reg_set_clear(bst, bsh, CAR_RST_SOURCE_REG, 912 CAR_RST_SOURCE_WDT_EN|CAR_RST_SOURCE_WDT_SYS_RST_EN, 0); 913 } 914 915 static void 916 tegra124_car_rnd_attach(device_t self) 917 { 918 struct tegra124_car_softc * const sc = device_private(self); 919 920 mutex_init(&sc->sc_rndlock, MUTEX_DEFAULT, IPL_VM); 921 rndsource_setcb(&sc->sc_rndsource, tegra124_car_rnd_callback, sc); 922 rnd_attach_source(&sc->sc_rndsource, device_xname(sc->sc_dev), 923 RND_TYPE_RNG, RND_FLAG_COLLECT_VALUE|RND_FLAG_HASCB); 924 } 925 926 static void 927 tegra124_car_rnd_callback(size_t bytes_wanted, void *priv) 928 { 929 struct tegra124_car_softc * const sc = priv; 930 uint16_t buf[512]; 931 uint32_t cnt; 932 933 mutex_enter(&sc->sc_rndlock); 934 while (bytes_wanted) { 935 const u_int nbytes = MIN(bytes_wanted, 1024); 936 for (cnt = 0; cnt < bytes_wanted / 2; cnt++) { 937 buf[cnt] = bus_space_read_4(sc->sc_bst, sc->sc_bsh, 938 CAR_PLL_LFSR_REG) & 0xffff; 939 } 940 rnd_add_data_sync(&sc->sc_rndsource, buf, nbytes, 941 nbytes * NBBY); 942 bytes_wanted -= MIN(bytes_wanted, nbytes); 943 } 944 explicit_memset(buf, 0, sizeof(buf)); 945 mutex_exit(&sc->sc_rndlock); 946 } 947 948 static struct tegra_clk * 949 tegra124_car_clock_find(const char *name) 950 { 951 u_int n; 952 953 for (n = 0; n < __arraycount(tegra124_car_clocks); n++) { 954 if (strcmp(tegra124_car_clocks[n].base.name, name) == 0) { 955 return &tegra124_car_clocks[n]; 956 } 957 } 958 959 return NULL; 960 } 961 962 static struct tegra_clk * 963 tegra124_car_clock_find_by_id(u_int clock_id) 964 { 965 u_int n; 966 967 for (n = 0; n < __arraycount(tegra124_car_clock_ids); n++) { 968 if (tegra124_car_clock_ids[n].id == clock_id) { 969 const char *name = tegra124_car_clock_ids[n].name; 970 return tegra124_car_clock_find(name); 971 } 972 } 973 974 return NULL; 975 } 976 977 static struct clk * 978 tegra124_car_clock_decode(device_t dev, int cc_phandle, const void *data, 979 size_t len) 980 { 981 struct tegra124_car_softc * const sc = device_private(dev); 982 struct tegra_clk *tclk; 983 984 if (len != sc->sc_clock_cells * 4) { 985 return NULL; 986 } 987 988 const u_int clock_id = be32dec(data); 989 990 tclk = tegra124_car_clock_find_by_id(clock_id); 991 if (tclk) 992 return TEGRA_CLK_BASE(tclk); 993 994 return NULL; 995 } 996 997 static struct clk * 998 tegra124_car_clock_get(void *priv, const char *name) 999 { 1000 struct tegra_clk *tclk; 1001 1002 tclk = tegra124_car_clock_find(name); 1003 if (tclk == NULL) 1004 return NULL; 1005 1006 atomic_inc_uint(&tclk->refcnt); 1007 1008 return TEGRA_CLK_BASE(tclk); 1009 } 1010 1011 static void 1012 tegra124_car_clock_put(void *priv, struct clk *clk) 1013 { 1014 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1015 1016 KASSERT(tclk->refcnt > 0); 1017 1018 atomic_dec_uint(&tclk->refcnt); 1019 } 1020 1021 static u_int 1022 tegra124_car_clock_get_rate_pll(struct tegra124_car_softc *sc, 1023 struct tegra_clk *tclk) 1024 { 1025 struct tegra_pll_clk *tpll = &tclk->u.pll; 1026 struct tegra_clk *tclk_parent; 1027 bus_space_tag_t bst = sc->sc_bst; 1028 bus_space_handle_t bsh = sc->sc_bsh; 1029 u_int divm, divn, divp; 1030 uint64_t rate; 1031 1032 KASSERT(tclk->type == TEGRA_CLK_PLL); 1033 1034 tclk_parent = tegra124_car_clock_find(tclk->parent); 1035 KASSERT(tclk_parent != NULL); 1036 1037 const u_int rate_parent = tegra124_car_clock_get_rate(sc, 1038 TEGRA_CLK_BASE(tclk_parent)); 1039 1040 const uint32_t base = bus_space_read_4(bst, bsh, tpll->base_reg); 1041 divm = __SHIFTOUT(base, tpll->divm_mask); 1042 divn = __SHIFTOUT(base, tpll->divn_mask); 1043 if (tpll->base_reg == CAR_PLLU_BASE_REG) { 1044 divp = __SHIFTOUT(base, tpll->divp_mask) ? 0 : 1; 1045 } else { 1046 divp = __SHIFTOUT(base, tpll->divp_mask); 1047 } 1048 1049 rate = (uint64_t)rate_parent * divn; 1050 return rate / (divm << divp); 1051 } 1052 1053 static int 1054 tegra124_car_clock_set_rate_pll(struct tegra124_car_softc *sc, 1055 struct tegra_clk *tclk, u_int rate) 1056 { 1057 struct tegra_pll_clk *tpll = &tclk->u.pll; 1058 bus_space_tag_t bst = sc->sc_bst; 1059 bus_space_handle_t bsh = sc->sc_bsh; 1060 struct clk *clk_parent; 1061 uint32_t bp, base; 1062 1063 clk_parent = tegra124_car_clock_get_parent(sc, TEGRA_CLK_BASE(tclk)); 1064 if (clk_parent == NULL) 1065 return EIO; 1066 const u_int rate_parent = tegra124_car_clock_get_rate(sc, clk_parent); 1067 if (rate_parent == 0) 1068 return EIO; 1069 1070 if (tpll->base_reg == CAR_PLLX_BASE_REG) { 1071 const u_int divm = 1; 1072 const u_int divn = rate / rate_parent; 1073 const u_int divp = 0; 1074 1075 bp = bus_space_read_4(bst, bsh, CAR_CCLKG_BURST_POLICY_REG); 1076 bp &= ~CAR_CCLKG_BURST_POLICY_CPU_STATE; 1077 bp |= __SHIFTIN(CAR_CCLKG_BURST_POLICY_CPU_STATE_IDLE, 1078 CAR_CCLKG_BURST_POLICY_CPU_STATE); 1079 bp &= ~CAR_CCLKG_BURST_POLICY_CWAKEUP_IDLE_SOURCE; 1080 bp |= __SHIFTIN(CAR_CCLKG_BURST_POLICY_CWAKEUP_SOURCE_CLKM, 1081 CAR_CCLKG_BURST_POLICY_CWAKEUP_IDLE_SOURCE); 1082 bus_space_write_4(bst, bsh, CAR_CCLKG_BURST_POLICY_REG, bp); 1083 1084 base = bus_space_read_4(bst, bsh, CAR_PLLX_BASE_REG); 1085 base &= ~CAR_PLLX_BASE_DIVM; 1086 base &= ~CAR_PLLX_BASE_DIVN; 1087 base &= ~CAR_PLLX_BASE_DIVP; 1088 base |= __SHIFTIN(divm, CAR_PLLX_BASE_DIVM); 1089 base |= __SHIFTIN(divn, CAR_PLLX_BASE_DIVN); 1090 base |= __SHIFTIN(divp, CAR_PLLX_BASE_DIVP); 1091 bus_space_write_4(bst, bsh, CAR_PLLX_BASE_REG, base); 1092 1093 tegra_reg_set_clear(bst, bsh, CAR_PLLX_MISC_REG, 1094 CAR_PLLX_MISC_LOCK_ENABLE, 0); 1095 do { 1096 delay(2); 1097 base = bus_space_read_4(bst, bsh, tpll->base_reg); 1098 } while ((base & CAR_PLLX_BASE_LOCK) == 0); 1099 delay(100); 1100 1101 bp &= ~CAR_CCLKG_BURST_POLICY_CPU_STATE; 1102 bp |= __SHIFTIN(CAR_CCLKG_BURST_POLICY_CPU_STATE_RUN, 1103 CAR_CCLKG_BURST_POLICY_CPU_STATE); 1104 bp &= ~CAR_CCLKG_BURST_POLICY_CWAKEUP_IDLE_SOURCE; 1105 bp |= __SHIFTIN(CAR_CCLKG_BURST_POLICY_CWAKEUP_SOURCE_PLLX_OUT0_LJ, 1106 CAR_CCLKG_BURST_POLICY_CWAKEUP_IDLE_SOURCE); 1107 bus_space_write_4(bst, bsh, CAR_CCLKG_BURST_POLICY_REG, bp); 1108 1109 return 0; 1110 } else if (tpll->base_reg == CAR_PLLD2_BASE_REG) { 1111 const u_int divm = 1; 1112 const u_int pldiv = 1; 1113 const u_int divn = (rate << pldiv) / rate_parent; 1114 1115 /* Set frequency */ 1116 tegra_reg_set_clear(bst, bsh, tpll->base_reg, 1117 __SHIFTIN(divm, CAR_PLLD2_BASE_DIVM) | 1118 __SHIFTIN(divn, CAR_PLLD2_BASE_DIVN) | 1119 __SHIFTIN(pldiv, CAR_PLLD2_BASE_DIVP), 1120 CAR_PLLD2_BASE_REF_SRC_SEL | 1121 CAR_PLLD2_BASE_DIVM | 1122 CAR_PLLD2_BASE_DIVN | 1123 CAR_PLLD2_BASE_DIVP); 1124 1125 return 0; 1126 } else { 1127 /* TODO */ 1128 return EOPNOTSUPP; 1129 } 1130 } 1131 1132 static int 1133 tegra124_car_clock_set_parent_mux(struct tegra124_car_softc *sc, 1134 struct tegra_clk *tclk, struct tegra_clk *tclk_parent) 1135 { 1136 struct tegra_mux_clk *tmux = &tclk->u.mux; 1137 bus_space_tag_t bst = sc->sc_bst; 1138 bus_space_handle_t bsh = sc->sc_bsh; 1139 uint32_t v; 1140 u_int src; 1141 1142 KASSERT(tclk->type == TEGRA_CLK_MUX); 1143 1144 for (src = 0; src < tmux->nparents; src++) { 1145 if (tmux->parents[src] == NULL) { 1146 continue; 1147 } 1148 if (strcmp(tmux->parents[src], tclk_parent->base.name) == 0) { 1149 break; 1150 } 1151 } 1152 if (src == tmux->nparents) { 1153 return EINVAL; 1154 } 1155 1156 if (tmux->reg == CAR_CLKSRC_HDMI_REG && 1157 src == CAR_CLKSRC_HDMI_SRC_PLLD2_OUT0) { 1158 /* Change IDDQ from 1 to 0 */ 1159 tegra_reg_set_clear(bst, bsh, CAR_PLLD2_BASE_REG, 1160 0, CAR_PLLD2_BASE_IDDQ); 1161 delay(2); 1162 1163 /* Enable lock */ 1164 tegra_reg_set_clear(bst, bsh, CAR_PLLD2_MISC_REG, 1165 CAR_PLLD2_MISC_LOCK_ENABLE, 0); 1166 1167 /* Enable PLLD2 */ 1168 tegra_reg_set_clear(bst, bsh, CAR_PLLD2_BASE_REG, 1169 CAR_PLLD2_BASE_ENABLE, 0); 1170 1171 /* Wait for lock */ 1172 do { 1173 delay(2); 1174 v = bus_space_read_4(bst, bsh, CAR_PLLD2_BASE_REG); 1175 } while ((v & CAR_PLLD2_BASE_LOCK) == 0); 1176 1177 delay(200); 1178 } 1179 1180 v = bus_space_read_4(bst, bsh, tmux->reg); 1181 v &= ~tmux->bits; 1182 v |= __SHIFTIN(src, tmux->bits); 1183 bus_space_write_4(bst, bsh, tmux->reg, v); 1184 1185 return 0; 1186 } 1187 1188 static struct tegra_clk * 1189 tegra124_car_clock_get_parent_mux(struct tegra124_car_softc *sc, 1190 struct tegra_clk *tclk) 1191 { 1192 struct tegra_mux_clk *tmux = &tclk->u.mux; 1193 bus_space_tag_t bst = sc->sc_bst; 1194 bus_space_handle_t bsh = sc->sc_bsh; 1195 1196 KASSERT(tclk->type == TEGRA_CLK_MUX); 1197 1198 const uint32_t v = bus_space_read_4(bst, bsh, tmux->reg); 1199 const u_int src = __SHIFTOUT(v, tmux->bits); 1200 1201 KASSERT(src < tmux->nparents); 1202 1203 if (tmux->parents[src] == NULL) { 1204 return NULL; 1205 } 1206 1207 return tegra124_car_clock_find(tmux->parents[src]); 1208 } 1209 1210 static u_int 1211 tegra124_car_clock_get_rate_fixed_div(struct tegra124_car_softc *sc, 1212 struct tegra_clk *tclk) 1213 { 1214 struct tegra_fixed_div_clk *tfixed_div = &tclk->u.fixed_div; 1215 struct clk *clk_parent; 1216 1217 clk_parent = tegra124_car_clock_get_parent(sc, TEGRA_CLK_BASE(tclk)); 1218 if (clk_parent == NULL) 1219 return 0; 1220 const u_int parent_rate = tegra124_car_clock_get_rate(sc, clk_parent); 1221 1222 return parent_rate / tfixed_div->div; 1223 } 1224 1225 static u_int 1226 tegra124_car_clock_calc_rate_frac_div(u_int rate, u_int raw_div) 1227 { 1228 raw_div += 2; 1229 rate *= 2; 1230 rate += raw_div - 1; 1231 rate /= raw_div; 1232 return rate; 1233 } 1234 1235 static u_int 1236 tegra124_car_clock_get_rate_div(struct tegra124_car_softc *sc, 1237 struct tegra_clk *tclk) 1238 { 1239 struct tegra_div_clk *tdiv = &tclk->u.div; 1240 bus_space_tag_t bst = sc->sc_bst; 1241 bus_space_handle_t bsh = sc->sc_bsh; 1242 struct clk *clk_parent; 1243 u_int rate; 1244 1245 KASSERT(tclk->type == TEGRA_CLK_DIV); 1246 1247 clk_parent = tegra124_car_clock_get_parent(sc, TEGRA_CLK_BASE(tclk)); 1248 const u_int parent_rate = tegra124_car_clock_get_rate(sc, clk_parent); 1249 1250 const uint32_t v = bus_space_read_4(bst, bsh, tdiv->reg); 1251 const u_int raw_div = __SHIFTOUT(v, tdiv->bits); 1252 1253 switch (tdiv->reg) { 1254 case CAR_CLKSRC_I2C1_REG: 1255 case CAR_CLKSRC_I2C2_REG: 1256 case CAR_CLKSRC_I2C3_REG: 1257 case CAR_CLKSRC_I2C4_REG: 1258 case CAR_CLKSRC_I2C5_REG: 1259 case CAR_CLKSRC_I2C6_REG: 1260 rate = parent_rate * 1 / (raw_div + 1); 1261 break; 1262 case CAR_CLKSRC_UARTA_REG: 1263 case CAR_CLKSRC_UARTB_REG: 1264 case CAR_CLKSRC_UARTC_REG: 1265 case CAR_CLKSRC_UARTD_REG: 1266 if (v & CAR_CLKSRC_UART_DIV_ENB) { 1267 rate = tegra124_car_clock_calc_rate_frac_div( 1268 parent_rate, raw_div); 1269 } else { 1270 rate = parent_rate; 1271 } 1272 break; 1273 default: 1274 rate = tegra124_car_clock_calc_rate_frac_div(parent_rate, 1275 raw_div); 1276 break; 1277 } 1278 1279 return rate; 1280 } 1281 1282 static int 1283 tegra124_car_clock_set_rate_div(struct tegra124_car_softc *sc, 1284 struct tegra_clk *tclk, u_int rate) 1285 { 1286 struct tegra_div_clk *tdiv = &tclk->u.div; 1287 bus_space_tag_t bst = sc->sc_bst; 1288 bus_space_handle_t bsh = sc->sc_bsh; 1289 struct clk *clk_parent; 1290 u_int raw_div; 1291 uint32_t v; 1292 1293 KASSERT(tclk->type == TEGRA_CLK_DIV); 1294 1295 clk_parent = tegra124_car_clock_get_parent(sc, TEGRA_CLK_BASE(tclk)); 1296 if (clk_parent == NULL) 1297 return EINVAL; 1298 const u_int parent_rate = tegra124_car_clock_get_rate(sc, clk_parent); 1299 1300 v = bus_space_read_4(bst, bsh, tdiv->reg); 1301 1302 raw_div = __SHIFTOUT(tdiv->bits, tdiv->bits); 1303 1304 switch (tdiv->reg) { 1305 case CAR_CLKSRC_UARTA_REG: 1306 case CAR_CLKSRC_UARTB_REG: 1307 case CAR_CLKSRC_UARTC_REG: 1308 case CAR_CLKSRC_UARTD_REG: 1309 if (rate == parent_rate) { 1310 v &= ~CAR_CLKSRC_UART_DIV_ENB; 1311 } else { 1312 v |= CAR_CLKSRC_UART_DIV_ENB; 1313 raw_div = (parent_rate * 2) / rate - 2; 1314 } 1315 break; 1316 case CAR_CLKSRC_SATA_REG: 1317 if (rate) { 1318 tegra_reg_set_clear(bst, bsh, CAR_SATA_PLL_CFG0_REG, 1319 0, CAR_SATA_PLL_CFG0_PADPLL_RESET_SWCTL); 1320 v |= CAR_CLKSRC_SATA_AUX_CLK_ENB; 1321 raw_div = (parent_rate * 2) / rate - 2; 1322 } else { 1323 v &= ~CAR_CLKSRC_SATA_AUX_CLK_ENB; 1324 } 1325 break; 1326 case CAR_CLKSRC_I2C1_REG: 1327 case CAR_CLKSRC_I2C2_REG: 1328 case CAR_CLKSRC_I2C3_REG: 1329 case CAR_CLKSRC_I2C4_REG: 1330 case CAR_CLKSRC_I2C5_REG: 1331 case CAR_CLKSRC_I2C6_REG: 1332 if (rate) 1333 raw_div = parent_rate / rate - 1; 1334 break; 1335 case CAR_CLKSRC_SDMMC1_REG: 1336 case CAR_CLKSRC_SDMMC2_REG: 1337 case CAR_CLKSRC_SDMMC3_REG: 1338 case CAR_CLKSRC_SDMMC4_REG: 1339 if (rate) { 1340 for (raw_div = 0x00; raw_div <= 0xff; raw_div++) { 1341 u_int calc_rate = 1342 tegra124_car_clock_calc_rate_frac_div( 1343 parent_rate, raw_div); 1344 if (calc_rate <= rate) 1345 break; 1346 } 1347 if (raw_div == 0x100) 1348 return EINVAL; 1349 } 1350 break; 1351 default: 1352 if (rate) 1353 raw_div = (parent_rate * 2) / rate - 2; 1354 break; 1355 } 1356 1357 v &= ~tdiv->bits; 1358 v |= __SHIFTIN(raw_div, tdiv->bits); 1359 1360 bus_space_write_4(bst, bsh, tdiv->reg, v); 1361 1362 return 0; 1363 } 1364 1365 static int 1366 tegra124_car_clock_enable_gate(struct tegra124_car_softc *sc, 1367 struct tegra_clk *tclk, bool enable) 1368 { 1369 struct tegra_gate_clk *tgate = &tclk->u.gate; 1370 bus_space_tag_t bst = sc->sc_bst; 1371 bus_space_handle_t bsh = sc->sc_bsh; 1372 bus_size_t reg; 1373 1374 KASSERT(tclk->type == TEGRA_CLK_GATE); 1375 1376 if (tgate->set_reg == tgate->clr_reg) { 1377 uint32_t v = bus_space_read_4(bst, bsh, tgate->set_reg); 1378 if (enable) { 1379 v |= tgate->bits; 1380 } else { 1381 v &= ~tgate->bits; 1382 } 1383 bus_space_write_4(bst, bsh, tgate->set_reg, v); 1384 } else { 1385 if (enable) { 1386 reg = tgate->set_reg; 1387 } else { 1388 reg = tgate->clr_reg; 1389 } 1390 1391 if (reg == CAR_CLK_ENB_V_SET_REG && 1392 tgate->bits == CAR_DEV_V_SATA) { 1393 /* De-assert reset to SATA PADPLL */ 1394 tegra_reg_set_clear(bst, bsh, CAR_SATA_PLL_CFG0_REG, 1395 0, CAR_SATA_PLL_CFG0_PADPLL_RESET_OVERRIDE_VALUE); 1396 delay(15); 1397 } 1398 bus_space_write_4(bst, bsh, reg, tgate->bits); 1399 } 1400 1401 return 0; 1402 } 1403 1404 static u_int 1405 tegra124_car_clock_get_rate(void *priv, struct clk *clk) 1406 { 1407 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1408 struct clk *clk_parent; 1409 1410 switch (tclk->type) { 1411 case TEGRA_CLK_FIXED: 1412 return tclk->u.fixed.rate; 1413 case TEGRA_CLK_PLL: 1414 return tegra124_car_clock_get_rate_pll(priv, tclk); 1415 case TEGRA_CLK_MUX: 1416 case TEGRA_CLK_GATE: 1417 clk_parent = tegra124_car_clock_get_parent(priv, clk); 1418 if (clk_parent == NULL) 1419 return EINVAL; 1420 return tegra124_car_clock_get_rate(priv, clk_parent); 1421 case TEGRA_CLK_FIXED_DIV: 1422 return tegra124_car_clock_get_rate_fixed_div(priv, tclk); 1423 case TEGRA_CLK_DIV: 1424 return tegra124_car_clock_get_rate_div(priv, tclk); 1425 default: 1426 panic("tegra124: unknown tclk type %d", tclk->type); 1427 } 1428 } 1429 1430 static int 1431 tegra124_car_clock_set_rate(void *priv, struct clk *clk, u_int rate) 1432 { 1433 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1434 struct clk *clk_parent; 1435 1436 KASSERT((clk->flags & CLK_SET_RATE_PARENT) == 0); 1437 1438 switch (tclk->type) { 1439 case TEGRA_CLK_FIXED: 1440 case TEGRA_CLK_MUX: 1441 return EIO; 1442 case TEGRA_CLK_FIXED_DIV: 1443 clk_parent = tegra124_car_clock_get_parent(priv, clk); 1444 if (clk_parent == NULL) 1445 return EIO; 1446 return tegra124_car_clock_set_rate(priv, clk_parent, 1447 rate * tclk->u.fixed_div.div); 1448 case TEGRA_CLK_GATE: 1449 return EINVAL; 1450 case TEGRA_CLK_PLL: 1451 return tegra124_car_clock_set_rate_pll(priv, tclk, rate); 1452 case TEGRA_CLK_DIV: 1453 return tegra124_car_clock_set_rate_div(priv, tclk, rate); 1454 default: 1455 panic("tegra124: unknown tclk type %d", tclk->type); 1456 } 1457 } 1458 1459 static int 1460 tegra124_car_clock_enable(void *priv, struct clk *clk) 1461 { 1462 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1463 struct clk *clk_parent; 1464 1465 if (tclk->type != TEGRA_CLK_GATE) { 1466 clk_parent = tegra124_car_clock_get_parent(priv, clk); 1467 if (clk_parent == NULL) 1468 return 0; 1469 return tegra124_car_clock_enable(priv, clk_parent); 1470 } 1471 1472 return tegra124_car_clock_enable_gate(priv, tclk, true); 1473 } 1474 1475 static int 1476 tegra124_car_clock_disable(void *priv, struct clk *clk) 1477 { 1478 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1479 1480 if (tclk->type != TEGRA_CLK_GATE) 1481 return EINVAL; 1482 1483 return tegra124_car_clock_enable_gate(priv, tclk, false); 1484 } 1485 1486 static int 1487 tegra124_car_clock_set_parent(void *priv, struct clk *clk, 1488 struct clk *clk_parent) 1489 { 1490 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1491 struct tegra_clk *tclk_parent = TEGRA_CLK_PRIV(clk_parent); 1492 struct clk *nclk_parent; 1493 1494 if (tclk->type != TEGRA_CLK_MUX) { 1495 nclk_parent = tegra124_car_clock_get_parent(priv, clk); 1496 if (nclk_parent == clk_parent || nclk_parent == NULL) 1497 return EINVAL; 1498 return tegra124_car_clock_set_parent(priv, nclk_parent, 1499 clk_parent); 1500 } 1501 1502 return tegra124_car_clock_set_parent_mux(priv, tclk, tclk_parent); 1503 } 1504 1505 static struct clk * 1506 tegra124_car_clock_get_parent(void *priv, struct clk *clk) 1507 { 1508 struct tegra_clk *tclk = TEGRA_CLK_PRIV(clk); 1509 struct tegra_clk *tclk_parent = NULL; 1510 1511 switch (tclk->type) { 1512 case TEGRA_CLK_FIXED: 1513 case TEGRA_CLK_PLL: 1514 case TEGRA_CLK_FIXED_DIV: 1515 case TEGRA_CLK_DIV: 1516 case TEGRA_CLK_GATE: 1517 if (tclk->parent) { 1518 tclk_parent = tegra124_car_clock_find(tclk->parent); 1519 } 1520 break; 1521 case TEGRA_CLK_MUX: 1522 tclk_parent = tegra124_car_clock_get_parent_mux(priv, tclk); 1523 break; 1524 } 1525 1526 if (tclk_parent == NULL) 1527 return NULL; 1528 1529 return TEGRA_CLK_BASE(tclk_parent); 1530 } 1531 1532 static void * 1533 tegra124_car_reset_acquire(device_t dev, const void *data, size_t len) 1534 { 1535 struct tegra124_car_softc * const sc = device_private(dev); 1536 struct tegra124_car_rst *rst; 1537 1538 if (len != sc->sc_reset_cells * 4) 1539 return NULL; 1540 1541 const u_int reset_id = be32dec(data); 1542 1543 if (reset_id >= __arraycount(tegra124_car_reset_regs) * 32) 1544 return NULL; 1545 1546 const u_int reg = reset_id / 32; 1547 1548 rst = kmem_alloc(sizeof(*rst), KM_SLEEP); 1549 rst->set_reg = tegra124_car_reset_regs[reg].set_reg; 1550 rst->clr_reg = tegra124_car_reset_regs[reg].clr_reg; 1551 rst->mask = __BIT(reset_id % 32); 1552 1553 return rst; 1554 } 1555 1556 static void 1557 tegra124_car_reset_release(device_t dev, void *priv) 1558 { 1559 struct tegra124_car_rst *rst = priv; 1560 1561 kmem_free(rst, sizeof(*rst)); 1562 } 1563 1564 static int 1565 tegra124_car_reset_assert(device_t dev, void *priv) 1566 { 1567 struct tegra124_car_softc * const sc = device_private(dev); 1568 struct tegra124_car_rst *rst = priv; 1569 1570 bus_space_write_4(sc->sc_bst, sc->sc_bsh, rst->set_reg, rst->mask); 1571 1572 return 0; 1573 } 1574 1575 static int 1576 tegra124_car_reset_deassert(device_t dev, void *priv) 1577 { 1578 struct tegra124_car_softc * const sc = device_private(dev); 1579 struct tegra124_car_rst *rst = priv; 1580 1581 bus_space_write_4(sc->sc_bst, sc->sc_bsh, rst->clr_reg, rst->mask); 1582 1583 return 0; 1584 } 1585
Indexes created Tue Sep 30 20:09:53 GMT 2025