1/* $NetBSD: exynos5422_clock.c,v 1.16 2021/01/27 03:10:19 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill@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 "locators.h" 30 31#include <sys/cdefs.h> 32__KERNEL_RCSID(0, "$NetBSD: exynos5422_clock.c,v 1.16 2021/01/27 03:10:19 thorpej Exp $"); 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/device.h> 37#include <sys/intr.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/atomic.h> 41 42#include <dev/clk/clk_backend.h> 43 44#include <arm/samsung/exynos_reg.h> 45#include <arm/samsung/exynos_var.h> 46#include <arm/samsung/exynos_clock.h> 47 48#include <dev/fdt/fdtvar.h> 49 50static struct clk *exynos5422_clock_decode(device_t, int, const void *, size_t); 51 52static const struct fdtbus_clock_controller_func exynos5422_car_fdtclock_funcs = { 53 .decode = exynos5422_clock_decode 54}; 55 56/* DT clock ID to clock name mappings */ 57static struct exynos5422_clock_id { 58 u_int id; 59 const char *name; 60} exynos5422_clock_ids[] = { 61 { 1, "fin_pll" }, 62 { 2, "fout_apll" }, 63 { 3, "fout_cpll" }, 64 { 4, "fout_dpll" }, 65 { 5, "fout_epll" }, 66 { 6, "fout_rpll" }, 67 { 7, "fout_ipll" }, 68 { 8, "fout_spll" }, 69 { 9, "fout_vpll" }, 70 { 10, "fout_mpll" }, 71 { 11, "fout_bpll" }, 72 { 12, "fout_kpll" }, 73 { 128, "sclk_uart0" }, 74 { 129, "sclk_uart1" }, 75 { 130, "sclk_uart2" }, 76 { 131, "sclk_uart3" }, 77 { 132, "sclk_mmc0" }, 78 { 133, "sclk_mmc1" }, 79 { 134, "sclk_mmc2" }, 80 { 135, "sclk_spi0" }, 81 { 136, "sclk_spi1" }, 82 { 137, "sclk_spi2" }, 83 { 138, "sclk_i2s1" }, 84 { 139, "sclk_i2s2" }, 85 { 140, "sclk_pcm1" }, 86 { 141, "sclk_pcm2" }, 87 { 142, "sclk_spdif" }, 88 { 143, "sclk_hdmi" }, 89 { 144, "sclk_pixel" }, 90 { 145, "sclk_dp1" }, 91 { 146, "sclk_mipi1" }, 92 { 147, "sclk_fimd1" }, 93 { 148, "sclk_maudio0" }, 94 { 149, "sclk_maupcm0" }, 95 { 150, "sclk_usbd300" }, 96 { 151, "sclk_usbd301" }, 97 { 152, "sclk_usbphy300" }, 98 { 153, "sclk_usbphy301" }, 99 { 154, "sclk_unipro" }, 100 { 155, "sclk_pwm" }, 101 { 156, "sclk_gscl_wa" }, 102 { 157, "sclk_gscl_wb" }, 103 { 158, "sclk_hdmiphy" }, 104 { 159, "mau_epll" }, 105 { 160, "sclk_hsic_12m" }, 106 { 161, "sclk_mphy_ixtal24" }, 107 { 257, "uart0" }, 108 { 258, "uart1" }, 109 { 259, "uart2" }, 110 { 260, "uart3" }, 111 { 261, "i2c0" }, 112 { 262, "i2c1" }, 113 { 263, "i2c2" }, 114 { 264, "i2c3" }, 115 { 265, "usi0" }, 116 { 266, "usi1" }, 117 { 267, "usi2" }, 118 { 268, "usi3" }, 119 { 269, "i2c_hdmi" }, 120 { 270, "tsadc" }, 121 { 271, "spi0" }, 122 { 272, "spi1" }, 123 { 273, "spi2" }, 124 { 274, "keyif" }, 125 { 275, "i2s1" }, 126 { 276, "i2s2" }, 127 { 277, "pcm1" }, 128 { 278, "pcm2" }, 129 { 279, "pwm" }, 130 { 280, "spdif" }, 131 { 281, "usi4" }, 132 { 282, "usi5" }, 133 { 283, "usi6" }, 134 { 300, "aclk66_psgen" }, 135 { 301, "chipid" }, 136 { 302, "sysreg" }, 137 { 303, "tzpc0" }, 138 { 304, "tzpc1" }, 139 { 305, "tzpc2" }, 140 { 306, "tzpc3" }, 141 { 307, "tzpc4" }, 142 { 308, "tzpc5" }, 143 { 309, "tzpc6" }, 144 { 310, "tzpc7" }, 145 { 311, "tzpc8" }, 146 { 312, "tzpc9" }, 147 { 313, "hdmi_cec" }, 148 { 314, "seckey" }, 149 { 315, "mct" }, 150 { 316, "wdt" }, 151 { 317, "rtc" }, 152 { 318, "tmu" }, 153 { 319, "tmu_gpu" }, 154 { 330, "pclk66_gpio" }, 155 { 350, "aclk200_fsys2" }, 156 { 351, "mout_mmc0" }, 157 { 352, "mout_mmc1" }, 158 { 353, "mout_mmc2" }, 159 { 354, "sromc" }, 160 { 355, "ufs" }, 161 { 360, "aclk200_fsys" }, 162 { 361, "tsi" }, 163 { 362, "pdma0" }, 164 { 363, "pdma1" }, 165 { 364, "rtic" }, 166 { 365, "usbh20" }, 167 { 366, "usbd300" }, 168 { 367, "usbd301" }, 169 { 380, "aclk400_mscl" }, 170 { 381, "mscl0" }, 171 { 382, "mscl1" }, 172 { 383, "mscl2" }, 173 { 384, "smmu_mscl0" }, 174 { 385, "smmu_mscl1" }, 175 { 386, "smmu_mscl2" }, 176 { 400, "aclk333" }, 177 { 401, "mfc" }, 178 { 402, "smmu_mfcl" }, 179 { 403, "smmu_mfcr" }, 180 { 410, "aclk200_disp1" }, 181 { 411, "dsim1" }, 182 { 412, "dp1" }, 183 { 413, "hdmi" }, 184 { 420, "aclk300_disp1" }, 185 { 421, "fimd1" }, 186 { 422, "smmu_fimd1m0" }, 187 { 423, "smmu_fimd1m1" }, 188 { 430, "aclk166" }, 189 { 431, "mixer" }, 190 { 440, "aclk266" }, 191 { 441, "rotator" }, 192 { 442, "mdma1" }, 193 { 443, "smmu_rotator" }, 194 { 444, "smmu_mdma1" }, 195 { 450, "aclk300_jpeg" }, 196 { 451, "jpeg" }, 197 { 452, "jpeg2" }, 198 { 453, "smmu_jpeg" }, 199 { 454, "smmu_jpeg2" }, 200 { 460, "aclk300_gscl" }, 201 { 461, "smmu_gscl0" }, 202 { 462, "smmu_gscl1" }, 203 { 463, "gscl_wa" }, 204 { 464, "gscl_wb" }, 205 { 465, "gscl0" }, 206 { 466, "gscl1" }, 207 { 467, "fimc_3aa" }, 208 { 470, "aclk266_g2d" }, 209 { 471, "sss" }, 210 { 472, "slim_sss" }, 211 { 473, "mdma0" }, 212 { 480, "aclk333_g2d" }, 213 { 481, "g2d" }, 214 { 490, "aclk333_432_gscl" }, 215 { 491, "smmu_3aa" }, 216 { 492, "smmu_fimcl0" }, 217 { 493, "smmu_fimcl1" }, 218 { 494, "smmu_fimcl3" }, 219 { 495, "fimc_lite3" }, 220 { 496, "fimc_lite0" }, 221 { 497, "fimc_lite1" }, 222 { 500, "aclk_g3d" }, 223 { 501, "g3d" }, 224 { 502, "smmu_mixer" }, 225 { 503, "smmu_g2d" }, 226 { 504, "smmu_mdma0" }, 227 { 505, "mc" }, 228 { 506, "top_rtc" }, 229 { 510, "sclk_uart_isp" }, 230 { 511, "sclk_spi0_isp" }, 231 { 512, "sclk_spi1_isp" }, 232 { 513, "sclk_pwm_isp" }, 233 { 514, "sclk_isp_sensor0" }, 234 { 515, "sclk_isp_sensor1" }, 235 { 516, "sclk_isp_sensor2" }, 236 { 517, "aclk432_scaler" }, 237 { 518, "aclk432_cam" }, 238 { 519, "aclk_fl1550_cam" }, 239 { 520, "aclk550_cam" }, 240 { 640, "mout_hdmi" }, 241 { 641, "mout_g3d" }, 242 { 642, "mout_vpll" }, 243 { 643, "mout_maudio0" }, 244 { 644, "mout_user_aclk333" }, 245 { 645, "mout_sw_aclk333" }, 246 { 646, "mout_user_aclk200_disp1" }, 247 { 647, "mout_sw_aclk200" }, 248 { 648, "mout_user_aclk300_disp1" }, 249 { 649, "mout_sw_aclk300" }, 250 { 650, "mout_user_aclk400_disp1" }, 251 { 651, "mout_sw_aclk400" }, 252 { 768, "dout_pixel" }, 253}; 254 255static struct clk *exynos5422_clock_get(void *, const char *); 256static void exynos5422_clock_put(void *, struct clk *); 257static u_int exynos5422_clock_get_rate(void *, struct clk *); 258static int exynos5422_clock_set_rate(void *, struct clk *, u_int); 259static int exynos5422_clock_enable(void *, struct clk *); 260static int exynos5422_clock_disable(void *, struct clk *); 261static int exynos5422_clock_set_parent(void *, struct clk *, struct clk *); 262static struct clk *exynos5422_clock_get_parent(void *, struct clk *); 263 264static const struct clk_funcs exynos5422_clock_funcs = { 265 .get = exynos5422_clock_get, 266 .put = exynos5422_clock_put, 267 .get_rate = exynos5422_clock_get_rate, 268 .set_rate = exynos5422_clock_set_rate, 269 .enable = exynos5422_clock_enable, 270 .disable = exynos5422_clock_disable, 271 .set_parent = exynos5422_clock_set_parent, 272 .get_parent = exynos5422_clock_get_parent, 273}; 274 275#define CLK_FIXED(_name, _rate) { \ 276 .base = { .name = (_name) }, .type = EXYNOS_CLK_FIXED, \ 277 .u = { .fixed = { .rate = (_rate) } } \ 278} 279 280#define CLK_PLL(_name, _parent, _lock, _con0) { \ 281 .base = { .name = (_name) }, .type = EXYNOS_CLK_PLL, \ 282 .parent = (_parent), \ 283 .u = { \ 284 .pll = { \ 285 .lock_reg = (_lock), \ 286 .con0_reg = (_con0), \ 287 } \ 288 } \ 289} 290 291#define CLK_MUXF(_name, _alias, _reg, _bits, _f, _p) { \ 292 .base = { .name = (_name), .flags = (_f) }, \ 293 .type = EXYNOS_CLK_MUX, \ 294 .alias = (_alias), \ 295 .u = { \ 296 .mux = { \ 297 .nparents = __arraycount(_p), \ 298 .parents = (_p), \ 299 .reg = (_reg), \ 300 .bits = (_bits) \ 301 } \ 302 } \ 303} 304 305#define CLK_MUXA(_name, _alias, _reg, _bits, _p) \ 306 CLK_MUXF(_name, _alias, _reg, _bits, 0, _p) 307 308#define CLK_MUX(_name, _reg, _bits, _p) \ 309 CLK_MUXF(_name, NULL, _reg, _bits, 0, _p) 310 311#define CLK_DIV(_name, _parent, _reg, _bits) { \ 312 .base = { .name = (_name) }, .type = EXYNOS_CLK_DIV, \ 313 .parent = (_parent), \ 314 .u = { \ 315 .div = { \ 316 .reg = (_reg), \ 317 .bits = (_bits) \ 318 } \ 319 } \ 320} 321 322#define CLK_GATE(_name, _parent, _reg, _bits, _f) { \ 323 .base = { .name = (_name), .flags = (_f) }, \ 324 .type = EXYNOS_CLK_GATE, \ 325 .parent = (_parent), \ 326 .u = { \ 327 .gate = { \ 328 .reg = (_reg), \ 329 .bits = (_bits) \ 330 } \ 331 } \ 332} 333 334#define EXYNOS5422_APLL_LOCK 0x00000 335#define EXYNOS5422_APLL_CON0 0x00100 336#define EXYNOS5422_CPLL_LOCK 0x10020 337#define EXYNOS5422_DPLL_LOCK 0x10030 338#define EXYNOS5422_EPLL_LOCK 0x10040 339#define EXYNOS5422_RPLL_LOCK 0x10050 340#define EXYNOS5422_IPLL_LOCK 0x10060 341#define EXYNOS5422_SPLL_LOCK 0x10070 342#define EXYNOS5422_VPLL_LOCK 0x10080 343#define EXYNOS5422_MPLL_LOCK 0x10090 344#define EXYNOS5422_CPLL_CON0 0x10120 345#define EXYNOS5422_DPLL_CON0 0x10128 346#define EXYNOS5422_EPLL_CON0 0x10130 347#define EXYNOS5422_EPLL_CON1 0x10134 348#define EXYNOS5422_EPLL_CON2 0x10138 349#define EXYNOS5422_RPLL_CON0 0x10140 350#define EXYNOS5422_RPLL_CON1 0x10144 351#define EXYNOS5422_RPLL_CON2 0x10148 352#define EXYNOS5422_IPLL_CON0 0x10150 353#define EXYNOS5422_SPLL_CON0 0x10160 354#define EXYNOS5422_VPLL_CON0 0x10170 355#define EXYNOS5422_MPLL_CON0 0x10180 356#define EXYNOS5422_BPLL_LOCK 0x20010 357#define EXYNOS5422_BPLL_CON0 0x20110 358#define EXYNOS5422_KPLL_LOCK 0x28000 359#define EXYNOS5422_KPLL_CON0 0x28100 360 361#define EXYNOS5422_SRC_CPU 0x00200 362#define EXYNOS5422_SRC_TOP0 0x10200 363#define EXYNOS5422_SRC_TOP1 0x10204 364#define EXYNOS5422_SRC_TOP2 0x10208 365#define EXYNOS5422_SRC_TOP3 0x1020c 366#define EXYNOS5422_SRC_TOP4 0x10210 367#define EXYNOS5422_SRC_TOP5 0x10214 368#define EXYNOS5422_SRC_TOP6 0x10218 369#define EXYNOS5422_SRC_TOP7 0x1021c 370#define EXYNOS5422_SRC_DISP10 0x1022c 371#define EXYNOS5422_SRC_MAU 0x10240 372#define EXYNOS5422_SRC_FSYS 0x10244 373#define EXYNOS5422_SRC_PERIC0 0x10250 374#define EXYNOS5422_SRC_PERIC1 0x10254 375#define EXYNOS5422_SRC_ISP 0x10270 376#define EXYNOS5422_SRC_TOP10 0x10280 377#define EXYNOS5422_SRC_TOP11 0x10284 378#define EXYNOS5422_SRC_TOP12 0x10288 379 380#define EXYNOS5422_DIV_TOP0 0x10500 381#define EXYNOS5422_DIV_TOP1 0x10504 382#define EXYNOS5422_DIV_FSYS0 0x10548 383#define EXYNOS5422_DIV_FSYS1 0x1054c 384#define EXYNOS5422_DIV_PERIC0 0x10558 385 386#define EXYNOS5422_GATE_BUS_FSYS0 0x10740 387#define EXYNOS5422_GATE_TOP_SCLK_FSYS 0x10840 388#define EXYNOS5422_GATE_TOP_SCLK_PERIC 0x10850 389#define EXYNOS5422_GATE_IP_FSYS 0x10944 390#define EXYNOS5422_GATE_IP_PERIC 0x10950 391 392static const char *mout_cpll_p[] = { "fin_pll", "fout_cpll" }; 393static const char *mout_dpll_p[] = { "fin_pll", "fout_dpll" }; 394static const char *mout_mpll_p[] = { "fin_pll", "fout_mpll" }; 395static const char *mout_spll_p[] = { "fin_pll", "fout_spll" }; 396static const char *mout_ipll_p[] = { "fin_pll", "fout_ipll" }; 397static const char *mout_epll_p[] = { "fin_pll", "fout_epll" }; 398static const char *mout_rpll_p[] = { "fin_pll", "fout_rpll" }; 399static const char *mout_group1_p[] = 400 { "sclk_cpll", "sclk_dpll", "sclk_mpp" }; 401static const char *mout_group2_p[] = 402 { "fin_pll", "sclk_cpll", "sclk_dpll", "sclk_mpll", 403 "sclk_spll", "sclk_ipll", "sclk_epll", "sclk_rpll" }; 404static const char *mout_user_aclk200_fsys_p[] = 405 { "fin_pll", "mout_sw_aclk200_fsys" }; 406static const char *mout_user_aclk200_fsys2_p[] = 407 { "fin_pll", "mout_sw_aclk200_fsys2" }; 408static const char *mout_user_aclk66_peric_p[] = 409 { "fin_pll", "mout_sw_aclk66" }; 410static const char *mout_sw_aclk66_p[] = 411 { "dout_aclk66", "sclk_spll" }; 412static const char *mout_sw_aclk200_fsys_p[] = 413 { "dout_aclk200_fsys", "sclk_spll" }; 414static const char *mout_sw_aclk200_fsys2_p[] = 415 { "dout_aclk200_fsys2", "sclk_spll" }; 416 417static struct exynos_clk exynos5422_clocks[] = { 418 CLK_FIXED("fin_pll", EXYNOS_F_IN_FREQ), 419 420 CLK_PLL("fout_apll", "fin_pll", EXYNOS5422_APLL_LOCK, 421 EXYNOS5422_APLL_CON0), 422 CLK_PLL("fout_cpll", "fin_pll", EXYNOS5422_CPLL_LOCK, 423 EXYNOS5422_CPLL_CON0), 424 CLK_PLL("fout_dpll", "fin_pll", EXYNOS5422_DPLL_LOCK, 425 EXYNOS5422_DPLL_CON0), 426 CLK_PLL("fout_epll", "fin_pll", EXYNOS5422_EPLL_LOCK, 427 EXYNOS5422_EPLL_CON0), 428 CLK_PLL("fout_rpll", "fin_pll", EXYNOS5422_RPLL_LOCK, 429 EXYNOS5422_RPLL_CON0), 430 CLK_PLL("fout_ipll", "fin_pll", EXYNOS5422_IPLL_LOCK, 431 EXYNOS5422_IPLL_CON0), 432 CLK_PLL("fout_spll", "fin_pll", EXYNOS5422_SPLL_LOCK, 433 EXYNOS5422_SPLL_CON0), 434 CLK_PLL("fout_vpll", "fin_pll", EXYNOS5422_VPLL_LOCK, 435 EXYNOS5422_VPLL_CON0), 436 CLK_PLL("fout_mpll", "fin_pll", EXYNOS5422_MPLL_LOCK, 437 EXYNOS5422_MPLL_CON0), 438 CLK_PLL("fout_bpll", "fin_pll", EXYNOS5422_BPLL_LOCK, 439 EXYNOS5422_BPLL_CON0), 440 CLK_PLL("fout_kpll", "fin_pll", EXYNOS5422_KPLL_LOCK, 441 EXYNOS5422_KPLL_CON0), 442 443 CLK_MUXA("sclk_cpll", "mout_cpll", EXYNOS5422_SRC_TOP6, __BIT(28), 444 mout_cpll_p), 445 CLK_MUXA("sclk_dpll", "mout_dpll", EXYNOS5422_SRC_TOP6, __BIT(24), 446 mout_dpll_p), 447 CLK_MUXA("sclk_mpll", "mout_mpll", EXYNOS5422_SRC_TOP6, __BIT(0), 448 mout_mpll_p), 449 CLK_MUXA("sclk_spll", "mout_spll", EXYNOS5422_SRC_TOP6, __BIT(8), 450 mout_spll_p), 451 CLK_MUXA("sclk_ipll", "mout_ipll", EXYNOS5422_SRC_TOP6, __BIT(12), 452 mout_ipll_p), 453 CLK_MUXF("sclk_epll", "mout_epll", EXYNOS5422_SRC_TOP6, __BIT(20), 454 CLK_SET_RATE_PARENT, mout_epll_p), 455 CLK_MUXF("sclk_rpll", "mout_rpll", EXYNOS5422_SRC_TOP6, __BIT(16), 456 CLK_SET_RATE_PARENT, mout_rpll_p), 457 458 CLK_MUX("mout_sw_aclk200_fsys", EXYNOS5422_SRC_TOP10, __BIT(24), 459 mout_sw_aclk200_fsys_p), 460 CLK_MUX("mout_sw_aclk200_fsys2", EXYNOS5422_SRC_TOP10, __BIT(12), 461 mout_sw_aclk200_fsys2_p), 462 CLK_MUX("mout_user_aclk200_fsys", EXYNOS5422_SRC_TOP3, __BIT(28), 463 mout_user_aclk200_fsys_p), 464 CLK_MUX("mout_user_aclk200_fsys2", EXYNOS5422_SRC_TOP3, __BIT(12), 465 mout_user_aclk200_fsys2_p), 466 CLK_MUX("mout_aclk66", EXYNOS5422_SRC_TOP1, __BITS(9,8), 467 mout_group1_p), 468 CLK_MUX("mout_aclk200_fsys", EXYNOS5422_SRC_TOP0, __BITS(25,24), 469 mout_group1_p), 470 CLK_MUX("mout_aclk200_fsys2", EXYNOS5422_SRC_TOP0, __BITS(13,12), 471 mout_group1_p), 472 473 CLK_MUX("mout_sw_aclk66", EXYNOS5422_SRC_TOP11, __BIT(8), 474 mout_sw_aclk66_p), 475 CLK_MUX("mout_user_aclk66_peric", EXYNOS5422_SRC_TOP4, __BIT(8), 476 mout_user_aclk66_peric_p), 477 478 CLK_MUX("mout_usbd301", EXYNOS5422_SRC_FSYS, __BITS(6,4), 479 mout_group2_p), 480 CLK_MUX("mout_usbd300", EXYNOS5422_SRC_FSYS, __BITS(22,20), 481 mout_group2_p), 482 CLK_MUX("mout_mmc0", EXYNOS5422_SRC_FSYS, __BITS(10,8), 483 mout_group2_p), 484 CLK_MUX("mout_mmc1", EXYNOS5422_SRC_FSYS, __BITS(14,12), 485 mout_group2_p), 486 CLK_MUX("mout_mmc2", EXYNOS5422_SRC_FSYS, __BITS(18,16), 487 mout_group2_p), 488 CLK_MUX("mout_uart0", EXYNOS5422_SRC_PERIC0, __BITS(6,4), 489 mout_group2_p), 490 CLK_MUX("mout_uart1", EXYNOS5422_SRC_PERIC0, __BITS(10,8), 491 mout_group2_p), 492 CLK_MUX("mout_uart2", EXYNOS5422_SRC_PERIC0, __BITS(14,12), 493 mout_group2_p), 494 CLK_MUX("mout_uart3", EXYNOS5422_SRC_PERIC0, __BITS(18,16), 495 mout_group2_p), 496 497 CLK_DIV("dout_aclk66", "mout_aclk66", EXYNOS5422_DIV_TOP1, __BITS(13,8)), 498 CLK_DIV("dout_aclk200_fsys", "mout_aclk200_fsys", EXYNOS5422_DIV_TOP0, __BITS(30,28)), 499 CLK_DIV("dout_aclk200_fsys2", "mout_aclk200_fsys2", EXYNOS5422_DIV_TOP0, __BITS(14,12)), 500 501 CLK_DIV("dout_usbphy301", "mout_usbd301", EXYNOS5422_DIV_FSYS0, __BITS(15,12)), 502 CLK_DIV("dout_usbphy300", "mout_usbd300", EXYNOS5422_DIV_FSYS0, __BITS(19,16)), 503 CLK_DIV("dout_usbd301", "mout_usbd301", EXYNOS5422_DIV_FSYS0, __BITS(23,20)), 504 CLK_DIV("dout_usbd300", "mout_usbd300", EXYNOS5422_DIV_FSYS0, __BITS(27,24)), 505 CLK_DIV("dout_mmc0", "mout_mmc0", EXYNOS5422_DIV_FSYS1, __BITS(9,0)), 506 CLK_DIV("dout_mmc1", "mout_mmc1", EXYNOS5422_DIV_FSYS1, __BITS(19,10)), 507 CLK_DIV("dout_mmc2", "mout_mmc2", EXYNOS5422_DIV_FSYS1, __BITS(29,20)), 508 CLK_DIV("dout_uart0", "mout_uart0", EXYNOS5422_DIV_PERIC0, 509 __BITS(11,8)), 510 CLK_DIV("dout_uart1", "mout_uart1", EXYNOS5422_DIV_PERIC0, 511 __BITS(15,12)), 512 CLK_DIV("dout_uart2", "mout_uart2", EXYNOS5422_DIV_PERIC0, 513 __BITS(19,16)), 514 CLK_DIV("dout_uart3", "mout_uart3", EXYNOS5422_DIV_PERIC0, 515 __BITS(23,20)), 516 517 CLK_GATE("aclk200_fsys", "mout_user_aclk200_fsys", EXYNOS5422_GATE_BUS_FSYS0, 518 __BIT(9), CLK_SET_RATE_PARENT), 519 CLK_GATE("aclk200_fsys2", "mout_user_aclk200_fsys2", EXYNOS5422_GATE_BUS_FSYS0, 520 __BIT(10), CLK_SET_RATE_PARENT), 521 522 CLK_GATE("sclk_mmc0", "dout_mmc0", EXYNOS5422_GATE_TOP_SCLK_FSYS, 523 __BIT(0), CLK_SET_RATE_PARENT), 524 CLK_GATE("sclk_mmc1", "dout_mmc1", EXYNOS5422_GATE_TOP_SCLK_FSYS, 525 __BIT(1), CLK_SET_RATE_PARENT), 526 CLK_GATE("sclk_mmc2", "dout_mmc2", EXYNOS5422_GATE_TOP_SCLK_FSYS, 527 __BIT(2), CLK_SET_RATE_PARENT), 528 CLK_GATE("sclk_usbphy301", "dout_usbphy301", EXYNOS5422_GATE_TOP_SCLK_FSYS, 529 __BIT(7), CLK_SET_RATE_PARENT), 530 CLK_GATE("sclk_usbphy300", "dout_usbphy300", EXYNOS5422_GATE_TOP_SCLK_FSYS, 531 __BIT(8), CLK_SET_RATE_PARENT), 532 CLK_GATE("sclk_usbd300", "dout_usbd300", EXYNOS5422_GATE_TOP_SCLK_FSYS, 533 __BIT(9), CLK_SET_RATE_PARENT), 534 CLK_GATE("sclk_usbd301", "dout_usbd301", EXYNOS5422_GATE_TOP_SCLK_FSYS, 535 __BIT(10), CLK_SET_RATE_PARENT), 536 CLK_GATE("sclk_uart0", "dout_uart0", EXYNOS5422_GATE_TOP_SCLK_PERIC, 537 __BIT(0), CLK_SET_RATE_PARENT), 538 CLK_GATE("sclk_uart1", "dout_uart1", EXYNOS5422_GATE_TOP_SCLK_PERIC, 539 __BIT(1), CLK_SET_RATE_PARENT), 540 CLK_GATE("sclk_uart2", "dout_uart2", EXYNOS5422_GATE_TOP_SCLK_PERIC, 541 __BIT(2), CLK_SET_RATE_PARENT), 542 CLK_GATE("sclk_uart3", "dout_uart3", EXYNOS5422_GATE_TOP_SCLK_PERIC, 543 __BIT(3), CLK_SET_RATE_PARENT), 544 545 CLK_GATE("mmc0", "aclk200_fsys2", EXYNOS5422_GATE_IP_FSYS, 546 __BIT(12), CLK_SET_RATE_PARENT), 547 CLK_GATE("mmc1", "aclk200_fsys2", EXYNOS5422_GATE_IP_FSYS, 548 __BIT(13), CLK_SET_RATE_PARENT), 549 CLK_GATE("mmc2", "aclk200_fsys2", EXYNOS5422_GATE_IP_FSYS, 550 __BIT(14), CLK_SET_RATE_PARENT), 551 CLK_GATE("usbh20", "aclk200_fsys", EXYNOS5422_GATE_IP_FSYS, 552 __BIT(18), CLK_SET_RATE_PARENT), 553 CLK_GATE("usbd300", "aclk200_fsys", EXYNOS5422_GATE_IP_FSYS, 554 __BIT(19), CLK_SET_RATE_PARENT), 555 CLK_GATE("usbd301", "aclk200_fsys", EXYNOS5422_GATE_IP_FSYS, 556 __BIT(20), CLK_SET_RATE_PARENT), 557 558 CLK_GATE("uart0", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 559 __BIT(0), CLK_SET_RATE_PARENT), 560 CLK_GATE("uart1", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 561 __BIT(1), CLK_SET_RATE_PARENT), 562 CLK_GATE("uart2", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 563 __BIT(2), CLK_SET_RATE_PARENT), 564 CLK_GATE("uart3", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 565 __BIT(3), CLK_SET_RATE_PARENT), 566 CLK_GATE("i2c0", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 567 __BIT(6), CLK_SET_RATE_PARENT), 568 CLK_GATE("i2c1", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 569 __BIT(7), CLK_SET_RATE_PARENT), 570 CLK_GATE("i2c2", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 571 __BIT(8), CLK_SET_RATE_PARENT), 572 CLK_GATE("i2c3", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 573 __BIT(9), CLK_SET_RATE_PARENT), 574 CLK_GATE("i2c_hdmi", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 575 __BIT(14), CLK_SET_RATE_PARENT), 576 CLK_GATE("pwm", "mout_user_aclk66_peric", EXYNOS5422_GATE_IP_PERIC, 577 __BIT(24), CLK_SET_RATE_PARENT), 578}; 579 580static int exynos5422_clock_match(device_t, cfdata_t, void *); 581static void exynos5422_clock_attach(device_t, device_t, void *); 582 583struct exynos5422_clock_softc { 584 device_t sc_dev; 585 bus_space_tag_t sc_bst; 586 bus_space_handle_t sc_bsh; 587 588 struct clk_domain sc_clkdom; 589}; 590 591static void exynos5422_clock_print_header(void); 592static void exynos5422_clock_print(struct exynos5422_clock_softc *, 593 struct exynos_clk *); 594 595CFATTACH_DECL_NEW(exynos5422_clock, sizeof(struct exynos5422_clock_softc), 596 exynos5422_clock_match, exynos5422_clock_attach, NULL, NULL); 597 598#define CLOCK_READ(sc, reg) \ 599 bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 600#define CLOCK_WRITE(sc, reg, val) \ 601 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 602 603static const struct device_compatible_entry compat_data[] = { 604 { .compat = "samsung,exynos5800-clock" }, 605 DEVICE_COMPAT_EOL 606}; 607 608static int 609exynos5422_clock_match(device_t parent, cfdata_t cf, void *aux) 610{ 611 struct fdt_attach_args * const faa = aux; 612 613 return of_compatible_match(faa->faa_phandle, compat_data); 614} 615 616static void 617exynos5422_clock_attach(device_t parent, device_t self, void *aux) 618{ 619 struct exynos5422_clock_softc * const sc = device_private(self); 620 struct fdt_attach_args * const faa = aux; 621 bus_addr_t addr; 622 bus_size_t size; 623 int error; 624 625 if (fdtbus_get_reg(faa->faa_phandle, 0, &addr, &size) != 0) { 626 aprint_error(": couldn't get registers\n"); 627 return; 628 } 629 630 sc->sc_dev = self; 631 sc->sc_bst = faa->faa_bst; 632 633 error = bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh); 634 if (error) { 635 aprint_error(": couldn't map %#" PRIxBUSADDR ": %d", 636 addr, error); 637 return; 638 } 639 640 aprint_naive("\n"); 641 aprint_normal(": Exynos5422 Clock Controller\n"); 642 643 sc->sc_clkdom.funcs = &exynos5422_clock_funcs; 644 sc->sc_clkdom.priv = sc; 645 for (u_int n = 0; n < __arraycount(exynos5422_clocks); n++) { 646 exynos5422_clocks[n].base.domain = &sc->sc_clkdom; 647 } 648 649 fdtbus_register_clock_controller(self, faa->faa_phandle, 650 &exynos5422_car_fdtclock_funcs); 651 652 exynos5422_clock_print_header(); 653 for (u_int n = 0; n < __arraycount(exynos5422_clocks); n++) { 654 exynos5422_clock_print(sc, &exynos5422_clocks[n]); 655 } 656} 657 658static struct exynos_clk * 659exynos5422_clock_find(const char *name) 660{ 661 u_int n; 662 663 for (n = 0; n < __arraycount(exynos5422_clocks); n++) { 664 if (strcmp(exynos5422_clocks[n].base.name, name) == 0) { 665 return &exynos5422_clocks[n]; 666 } 667 } 668 669 return NULL; 670} 671 672static struct exynos_clk * 673exynos5422_clock_find_by_id(u_int clock_id) 674{ 675 u_int n; 676 677 for (n = 0; n < __arraycount(exynos5422_clock_ids); n++) { 678 if (exynos5422_clock_ids[n].id == clock_id) { 679 const char *name = exynos5422_clock_ids[n].name; 680 return exynos5422_clock_find(name); 681 } 682 } 683 684 return NULL; 685} 686 687static void 688exynos5422_clock_print_header(void) 689{ 690 aprint_debug(" %-10s %2s %-10s %-5s %10s\n", 691 "clock", "", "parent", "type", "rate"); 692 aprint_debug(" %-10s %2s %-10s %-5s %10s\n", 693 "=====", "", "======", "====", "===="); 694} 695 696static void 697exynos5422_clock_print(struct exynos5422_clock_softc *sc, 698 struct exynos_clk *eclk) 699{ 700 struct exynos_clk *eclk_parent; 701 struct clk *clk_parent; 702 const char *type = "?"; 703 704 switch (eclk->type) { 705 case EXYNOS_CLK_FIXED: 706 type = "fixed"; 707 break; 708 case EXYNOS_CLK_PLL: 709 type = "pll"; 710 break; 711 case EXYNOS_CLK_MUX: 712 type = "mux"; 713 break; 714 case EXYNOS_CLK_DIV: 715 type = "div"; 716 break; 717 case EXYNOS_CLK_GATE: 718 type = "gate"; 719 break; 720 } 721 722 clk_parent = exynos5422_clock_get_parent(sc, &eclk->base); 723 eclk_parent = (struct exynos_clk *)clk_parent; 724 725 aprint_debug(" %-10s %2s %-10s %-5s %10d Hz\n", 726 eclk->base.name, 727 eclk_parent ? "<-" : "", 728 eclk_parent ? eclk_parent->base.name : "", 729 type, clk_get_rate(&eclk->base)); 730} 731 732static struct clk * 733exynos5422_clock_decode(device_t dev, int cc_phandle, const void *data, 734 size_t len) 735{ 736 struct exynos_clk *eclk; 737 738 /* #clock-cells should be 1 */ 739 if (len != 4) { 740 return NULL; 741 } 742 743 const u_int clock_id = be32dec(data); 744 745 eclk = exynos5422_clock_find_by_id(clock_id); 746 if (eclk) 747 return &eclk->base; 748 749 return NULL; 750} 751 752static u_int 753exynos5422_clock_get_rate_pll(struct exynos5422_clock_softc *sc, 754 struct exynos_clk *eclk) 755{ 756 struct exynos_pll_clk *epll = &eclk->u.pll; 757 struct exynos_clk *clk_parent; 758 759 KASSERT(eclk->type == EXYNOS_CLK_PLL); 760 761 clk_parent = exynos5422_clock_find(eclk->parent); 762 KASSERT(clk_parent != NULL); 763 const u_int rate_parent = exynos5422_clock_get_rate(sc, 764 &clk_parent->base); 765 766 const uint32_t v = CLOCK_READ(sc, epll->con0_reg); 767 768 return PLL_FREQ(rate_parent, v); 769} 770 771static int 772exynos5422_clock_set_rate_pll(struct exynos5422_clock_softc *sc, 773 struct exynos_clk *eclk, u_int rate) 774{ 775 /* TODO */ 776 return EOPNOTSUPP; 777} 778 779static int 780exynos5422_clock_set_parent_mux(struct exynos5422_clock_softc *sc, 781 struct exynos_clk *eclk, struct exynos_clk *eclk_parent) 782{ 783 struct exynos_mux_clk *emux = &eclk->u.mux; 784 const char *pname = eclk_parent->base.name; 785 u_int sel; 786 787 KASSERT(eclk->type == EXYNOS_CLK_MUX); 788 789 for (sel = 0; sel < emux->nparents; sel++) { 790 if (strcmp(pname, emux->parents[sel]) == 0) { 791 break; 792 } 793 } 794 if (sel == emux->nparents) { 795 return EINVAL; 796 } 797 798 uint32_t v = CLOCK_READ(sc, emux->reg); 799 v &= ~emux->bits; 800 v |= __SHIFTIN(sel, emux->bits); 801 CLOCK_WRITE(sc, emux->reg, v); 802 803 return 0; 804} 805 806static struct exynos_clk * 807exynos5422_clock_get_parent_mux(struct exynos5422_clock_softc *sc, 808 struct exynos_clk *eclk) 809{ 810 struct exynos_mux_clk *emux = &eclk->u.mux; 811 812 KASSERT(eclk->type == EXYNOS_CLK_MUX); 813 814 const uint32_t v = CLOCK_READ(sc, emux->reg); 815 const u_int sel = __SHIFTOUT(v, emux->bits); 816 817 KASSERT(sel < emux->nparents); 818 819 return exynos5422_clock_find(emux->parents[sel]); 820} 821 822static u_int 823exynos5422_clock_get_rate_div(struct exynos5422_clock_softc *sc, 824 struct exynos_clk *eclk) 825{ 826 struct exynos_div_clk *ediv = &eclk->u.div; 827 struct clk *clk_parent; 828 829 KASSERT(eclk->type == EXYNOS_CLK_DIV); 830 831 clk_parent = exynos5422_clock_get_parent(sc, &eclk->base); 832 const u_int parent_rate = exynos5422_clock_get_rate(sc, clk_parent); 833 834 const uint32_t v = CLOCK_READ(sc, ediv->reg); 835 const u_int div = __SHIFTOUT(v, ediv->bits); 836 837 return parent_rate / (div + 1); 838} 839 840static int 841exynos5422_clock_set_rate_div(struct exynos5422_clock_softc *sc, 842 struct exynos_clk *eclk, u_int rate) 843{ 844 struct exynos_div_clk *ediv = &eclk->u.div; 845 struct clk *clk_parent; 846 int tmp_div, new_div = -1; 847 u_int tmp_rate; 848 849 KASSERT(eclk->type == EXYNOS_CLK_DIV); 850 851 clk_parent = exynos5422_clock_get_parent(sc, &eclk->base); 852 const u_int parent_rate = exynos5422_clock_get_rate(sc, clk_parent); 853 854 for (tmp_div = 0; tmp_div < __SHIFTOUT_MASK(ediv->bits); tmp_div++) { 855 tmp_rate = parent_rate / (tmp_div + 1); 856 if (tmp_rate <= rate) { 857 new_div = tmp_div; 858 break; 859 } 860 } 861 if (new_div == -1) 862 return EINVAL; 863 864 uint32_t v = CLOCK_READ(sc, ediv->reg); 865 v &= ~ediv->bits; 866 v |= __SHIFTIN(new_div, ediv->bits); 867 CLOCK_WRITE(sc, ediv->reg, v); 868 869 return 0; 870} 871 872static int 873exynos5422_clock_enable_gate(struct exynos5422_clock_softc *sc, 874 struct exynos_clk *eclk, bool enable) 875{ 876 struct exynos_gate_clk *egate = &eclk->u.gate; 877 878 KASSERT(eclk->type == EXYNOS_CLK_GATE); 879 880 uint32_t v = CLOCK_READ(sc, egate->reg); 881 if (enable) { 882 v |= egate->bits; 883 } else { 884 v &= ~egate->bits; 885 } 886 CLOCK_WRITE(sc, egate->reg, v); 887 888 return 0; 889} 890 891/* 892 * clk api 893 */ 894 895static struct clk * 896exynos5422_clock_get(void *priv, const char *name) 897{ 898 struct exynos_clk *eclk; 899 900 eclk = exynos5422_clock_find(name); 901 if (eclk == NULL) 902 return NULL; 903 904 atomic_inc_uint(&eclk->refcnt); 905 906 return &eclk->base; 907} 908 909static void 910exynos5422_clock_put(void *priv, struct clk *clk) 911{ 912 struct exynos_clk *eclk = (struct exynos_clk *)clk; 913 914 KASSERT(eclk->refcnt > 0); 915 916 atomic_dec_uint(&eclk->refcnt); 917} 918 919static u_int 920exynos5422_clock_get_rate(void *priv, struct clk *clk) 921{ 922 struct exynos_clk *eclk = (struct exynos_clk *)clk; 923 struct clk *clk_parent; 924 925 switch (eclk->type) { 926 case EXYNOS_CLK_FIXED: 927 return eclk->u.fixed.rate; 928 case EXYNOS_CLK_PLL: 929 return exynos5422_clock_get_rate_pll(priv, eclk); 930 case EXYNOS_CLK_MUX: 931 case EXYNOS_CLK_GATE: 932 clk_parent = exynos5422_clock_get_parent(priv, clk); 933 return exynos5422_clock_get_rate(priv, clk_parent); 934 case EXYNOS_CLK_DIV: 935 return exynos5422_clock_get_rate_div(priv, eclk); 936 default: 937 panic("exynos5422: unknown eclk type %d", eclk->type); 938 } 939} 940 941static int 942exynos5422_clock_set_rate(void *priv, struct clk *clk, u_int rate) 943{ 944 struct exynos_clk *eclk = (struct exynos_clk *)clk; 945 946 KASSERT((clk->flags & CLK_SET_RATE_PARENT) == 0); 947 948 switch (eclk->type) { 949 case EXYNOS_CLK_FIXED: 950 return EIO; 951 case EXYNOS_CLK_PLL: 952 return exynos5422_clock_set_rate_pll(priv, eclk, rate); 953 case EXYNOS_CLK_MUX: 954 return EIO; 955 case EXYNOS_CLK_DIV: 956 return exynos5422_clock_set_rate_div(priv, eclk, rate); 957 case EXYNOS_CLK_GATE: 958 return EINVAL; 959 default: 960 panic("exynos5422: unknown eclk type %d", eclk->type); 961 } 962} 963 964static int 965exynos5422_clock_enable(void *priv, struct clk *clk) 966{ 967 struct exynos_clk *eclk = (struct exynos_clk *)clk; 968 969 switch (eclk->type) { 970 case EXYNOS_CLK_FIXED: 971 return 0; /* always on */ 972 case EXYNOS_CLK_PLL: 973 return 0; /* XXX */ 974 case EXYNOS_CLK_MUX: 975 case EXYNOS_CLK_DIV: 976 return 0; 977 case EXYNOS_CLK_GATE: 978 return exynos5422_clock_enable_gate(priv, eclk, true); 979 default: 980 panic("exynos5422: unknown eclk type %d", eclk->type); 981 } 982} 983 984static int 985exynos5422_clock_disable(void *priv, struct clk *clk) 986{ 987 struct exynos_clk *eclk = (struct exynos_clk *)clk; 988 989 switch (eclk->type) { 990 case EXYNOS_CLK_FIXED: 991 return EINVAL; /* always on */ 992 case EXYNOS_CLK_PLL: 993 return EINVAL; /* XXX */ 994 case EXYNOS_CLK_MUX: 995 case EXYNOS_CLK_DIV: 996 return EINVAL; 997 case EXYNOS_CLK_GATE: 998 return exynos5422_clock_enable_gate(priv, eclk, false); 999 default: 1000 panic("exynos5422: unknown eclk type %d", eclk->type); 1001 } 1002} 1003 1004static int 1005exynos5422_clock_set_parent(void *priv, struct clk *clk, struct clk *clk_parent) 1006{ 1007 struct exynos_clk *eclk = (struct exynos_clk *)clk; 1008 struct exynos_clk *eclk_parent = (struct exynos_clk *)clk_parent; 1009 1010 switch (eclk->type) { 1011 case EXYNOS_CLK_FIXED: 1012 case EXYNOS_CLK_PLL: 1013 case EXYNOS_CLK_DIV: 1014 case EXYNOS_CLK_GATE: 1015 return EINVAL; 1016 case EXYNOS_CLK_MUX: 1017 return exynos5422_clock_set_parent_mux(priv, eclk, eclk_parent); 1018 default: 1019 panic("exynos5422: unknown eclk type %d", eclk->type); 1020 } 1021} 1022 1023static struct clk * 1024exynos5422_clock_get_parent(void *priv, struct clk *clk) 1025{ 1026 struct exynos_clk *eclk = (struct exynos_clk *)clk; 1027 struct exynos_clk *eclk_parent = NULL; 1028 1029 switch (eclk->type) { 1030 case EXYNOS_CLK_FIXED: 1031 case EXYNOS_CLK_PLL: 1032 case EXYNOS_CLK_DIV: 1033 case EXYNOS_CLK_GATE: 1034 if (eclk->parent != NULL) { 1035 eclk_parent = exynos5422_clock_find(eclk->parent); 1036 } 1037 break; 1038 case EXYNOS_CLK_MUX: 1039 eclk_parent = exynos5422_clock_get_parent_mux(priv, eclk); 1040 break; 1041 default: 1042 panic("exynos5422: unknown eclk type %d", eclk->type); 1043 } 1044 1045 return (struct clk *)eclk_parent; 1046} 1047