drivers/clk/mmp/clk-pxa168.c

   1 /*
   2  * pxa168 clock framework source file
   3  *
   4  * Copyright (C) 2012 Marvell
   5  * Chao Xie <xiechao.mail@gmail.com>
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2. This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/clk.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/spinlock.h>
  16 #include <linux/io.h>
  17 #include <linux/delay.h>
  18 #include <linux/err.h>
  19
  20 #include "clk.h"
  21
  22 #define APBC_RTC        0x28
  23 #define APBC_TWSI0      0x2c
  24 #define APBC_KPC        0x30
  25 #define APBC_UART0      0x0
  26 #define APBC_UART1      0x4
  27 #define APBC_GPIO       0x8
  28 #define APBC_PWM0       0xc
  29 #define APBC_PWM1       0x10
  30 #define APBC_PWM2       0x14
  31 #define APBC_PWM3       0x18
  32 #define APBC_SSP0       0x81c
  33 #define APBC_SSP1       0x820
  34 #define APBC_SSP2       0x84c
  35 #define APBC_SSP3       0x858
  36 #define APBC_SSP4       0x85c
  37 #define APBC_TWSI1      0x6c
  38 #define APBC_UART2      0x70
  39 #define APMU_SDH0       0x54
  40 #define APMU_SDH1       0x58
  41 #define APMU_USB        0x5c
  42 #define APMU_DISP0      0x4c
  43 #define APMU_CCIC0      0x50
  44 #define APMU_DFC        0x60
  45 #define MPMU_UART_PLL   0x14
  46
  47 static DEFINE_SPINLOCK(clk_lock);
  48
  49 static struct mmp_clk_factor_masks uart_factor_masks = {
  50         .factor = 2,
  51         .num_mask = 0x1fff,
  52         .den_mask = 0x1fff,
  53         .num_shift = 16,
  54         .den_shift = 0,
  55 };
  56
  57 static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
  58         {.num = 8125, .den = 1536},     /*14.745MHZ */
  59 };
  60
  61 static const char *uart_parent[] = {"pll1_3_16", "uart_pll"};
  62 static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"};
  63 static const char *sdh_parent[] = {"pll1_12", "pll1_13"};
  64 static const char *disp_parent[] = {"pll1_2", "pll1_12"};
  65 static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
  66 static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
  67
  68 void __init pxa168_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
  69                             phys_addr_t apbc_phys)
  70 {
  71         struct clk *clk;
  72         struct clk *uart_pll;
  73         void __iomem *mpmu_base;
  74         void __iomem *apmu_base;
  75         void __iomem *apbc_base;
  76
  77         mpmu_base = ioremap(mpmu_phys, SZ_4K);
  78         if (mpmu_base == NULL) {
  79                 pr_err("error to ioremap MPMU base\n");
  80                 return;
  81         }
  82
  83         apmu_base = ioremap(apmu_phys, SZ_4K);
  84         if (apmu_base == NULL) {
  85                 pr_err("error to ioremap APMU base\n");
  86                 return;
  87         }
  88
  89         apbc_base = ioremap(apbc_phys, SZ_4K);
  90         if (apbc_base == NULL) {
  91                 pr_err("error to ioremap APBC base\n");
  92                 return;
  93         }
  94
  95         clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200);
  96         clk_register_clkdev(clk, "clk32", NULL);
  97
  98         clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000);
  99         clk_register_clkdev(clk, "vctcxo", NULL);
 100
 101         clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 624000000);
 102         clk_register_clkdev(clk, "pll1", NULL);
 103
 104         clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",
 105                                 CLK_SET_RATE_PARENT, 1, 2);
 106         clk_register_clkdev(clk, "pll1_2", NULL);
 107
 108         clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2",
 109                                 CLK_SET_RATE_PARENT, 1, 2);
 110         clk_register_clkdev(clk, "pll1_4", NULL);
 111
 112         clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4",
 113                                 CLK_SET_RATE_PARENT, 1, 2);
 114         clk_register_clkdev(clk, "pll1_8", NULL);
 115
 116         clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8",
 117                                 CLK_SET_RATE_PARENT, 1, 2);
 118         clk_register_clkdev(clk, "pll1_16", NULL);
 119
 120         clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2",
 121                                 CLK_SET_RATE_PARENT, 1, 3);
 122         clk_register_clkdev(clk, "pll1_6", NULL);
 123
 124         clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6",
 125                                 CLK_SET_RATE_PARENT, 1, 2);
 126         clk_register_clkdev(clk, "pll1_12", NULL);
 127
 128         clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12",
 129                                 CLK_SET_RATE_PARENT, 1, 2);
 130         clk_register_clkdev(clk, "pll1_24", NULL);
 131
 132         clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24",
 133                                 CLK_SET_RATE_PARENT, 1, 2);
 134         clk_register_clkdev(clk, "pll1_48", NULL);
 135
 136         clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48",
 137                                 CLK_SET_RATE_PARENT, 1, 2);
 138         clk_register_clkdev(clk, "pll1_96", NULL);
 139
 140         clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1",
 141                                 CLK_SET_RATE_PARENT, 1, 13);
 142         clk_register_clkdev(clk, "pll1_13", NULL);
 143
 144         clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1",
 145                                 CLK_SET_RATE_PARENT, 2, 3);
 146         clk_register_clkdev(clk, "pll1_13_1_5", NULL);
 147
 148         clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1",
 149                                 CLK_SET_RATE_PARENT, 2, 3);
 150         clk_register_clkdev(clk, "pll1_2_1_5", NULL);
 151
 152         clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1",
 153                                 CLK_SET_RATE_PARENT, 3, 16);
 154         clk_register_clkdev(clk, "pll1_3_16", NULL);
 155
 156         uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0,
 157                                 mpmu_base + MPMU_UART_PLL,
 158                                 &uart_factor_masks, uart_factor_tbl,
 159                                 ARRAY_SIZE(uart_factor_tbl), &clk_lock);
 160         clk_set_rate(uart_pll, 14745600);
 161         clk_register_clkdev(uart_pll, "uart_pll", NULL);
 162
 163         clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5",
 164                                 apbc_base + APBC_TWSI0, 10, 0, &clk_lock);
 165         clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0");
 166
 167         clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5",
 168                                 apbc_base + APBC_TWSI1, 10, 0, &clk_lock);
 169         clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1");
 170
 171         clk = mmp_clk_register_apbc("gpio", "vctcxo",
 172                                 apbc_base + APBC_GPIO, 10, 0, &clk_lock);
 173         clk_register_clkdev(clk, NULL, "mmp-gpio");
 174
 175         clk = mmp_clk_register_apbc("kpc", "clk32",
 176                                 apbc_base + APBC_KPC, 10, 0, &clk_lock);
 177         clk_register_clkdev(clk, NULL, "pxa27x-keypad");
 178
 179         clk = mmp_clk_register_apbc("rtc", "clk32",
 180                                 apbc_base + APBC_RTC, 10, 0, &clk_lock);
 181         clk_register_clkdev(clk, NULL, "sa1100-rtc");
 182
 183         clk = mmp_clk_register_apbc("pwm0", "pll1_48",
 184                                 apbc_base + APBC_PWM0, 10, 0, &clk_lock);
 185         clk_register_clkdev(clk, NULL, "pxa168-pwm.0");
 186
 187         clk = mmp_clk_register_apbc("pwm1", "pll1_48",
 188                                 apbc_base + APBC_PWM1, 10, 0, &clk_lock);
 189         clk_register_clkdev(clk, NULL, "pxa168-pwm.1");
 190
 191         clk = mmp_clk_register_apbc("pwm2", "pll1_48",
 192                                 apbc_base + APBC_PWM2, 10, 0, &clk_lock);
 193         clk_register_clkdev(clk, NULL, "pxa168-pwm.2");
 194
 195         clk = mmp_clk_register_apbc("pwm3", "pll1_48",
 196                                 apbc_base + APBC_PWM3, 10, 0, &clk_lock);
 197         clk_register_clkdev(clk, NULL, "pxa168-pwm.3");
 198
 199         clk = clk_register_mux(NULL, "uart0_mux", uart_parent,
 200                                 ARRAY_SIZE(uart_parent),
 201                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 202                                 apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
 203         clk_set_parent(clk, uart_pll);
 204         clk_register_clkdev(clk, "uart_mux.0", NULL);
 205
 206         clk = mmp_clk_register_apbc("uart0", "uart0_mux",
 207                                 apbc_base + APBC_UART0, 10, 0, &clk_lock);
 208         clk_register_clkdev(clk, NULL, "pxa2xx-uart.0");
 209
 210         clk = clk_register_mux(NULL, "uart1_mux", uart_parent,
 211                                 ARRAY_SIZE(uart_parent),
 212                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 213                                 apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
 214         clk_set_parent(clk, uart_pll);
 215         clk_register_clkdev(clk, "uart_mux.1", NULL);
 216
 217         clk = mmp_clk_register_apbc("uart1", "uart1_mux",
 218                                 apbc_base + APBC_UART1, 10, 0, &clk_lock);
 219         clk_register_clkdev(clk, NULL, "pxa2xx-uart.1");
 220
 221         clk = clk_register_mux(NULL, "uart2_mux", uart_parent,
 222                                 ARRAY_SIZE(uart_parent),
 223                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 224                                 apbc_base + APBC_UART2, 4, 3, 0, &clk_lock);
 225         clk_set_parent(clk, uart_pll);
 226         clk_register_clkdev(clk, "uart_mux.2", NULL);
 227
 228         clk = mmp_clk_register_apbc("uart2", "uart2_mux",
 229                                 apbc_base + APBC_UART2, 10, 0, &clk_lock);
 230         clk_register_clkdev(clk, NULL, "pxa2xx-uart.2");
 231
 232         clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent,
 233                                 ARRAY_SIZE(ssp_parent),
 234                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 235                                 apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
 236         clk_register_clkdev(clk, "uart_mux.0", NULL);
 237
 238         clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", apbc_base + APBC_SSP0,
 239                                 10, 0, &clk_lock);
 240         clk_register_clkdev(clk, NULL, "mmp-ssp.0");
 241
 242         clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent,
 243                                 ARRAY_SIZE(ssp_parent),
 244                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 245                                 apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock);
 246         clk_register_clkdev(clk, "ssp_mux.1", NULL);
 247
 248         clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", apbc_base + APBC_SSP1,
 249                                 10, 0, &clk_lock);
 250         clk_register_clkdev(clk, NULL, "mmp-ssp.1");
 251
 252         clk = clk_register_mux(NULL, "ssp2_mux", ssp_parent,
 253                                 ARRAY_SIZE(ssp_parent),
 254                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 255                                 apbc_base + APBC_SSP2, 4, 3, 0, &clk_lock);
 256         clk_register_clkdev(clk, "ssp_mux.2", NULL);
 257
 258         clk = mmp_clk_register_apbc("ssp2", "ssp1_mux", apbc_base + APBC_SSP2,
 259                                 10, 0, &clk_lock);
 260         clk_register_clkdev(clk, NULL, "mmp-ssp.2");
 261
 262         clk = clk_register_mux(NULL, "ssp3_mux", ssp_parent,
 263                                 ARRAY_SIZE(ssp_parent),
 264                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 265                                 apbc_base + APBC_SSP3, 4, 3, 0, &clk_lock);
 266         clk_register_clkdev(clk, "ssp_mux.3", NULL);
 267
 268         clk = mmp_clk_register_apbc("ssp3", "ssp1_mux", apbc_base + APBC_SSP3,
 269                                 10, 0, &clk_lock);
 270         clk_register_clkdev(clk, NULL, "mmp-ssp.3");
 271
 272         clk = clk_register_mux(NULL, "ssp4_mux", ssp_parent,
 273                                 ARRAY_SIZE(ssp_parent),
 274                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 275                                 apbc_base + APBC_SSP4, 4, 3, 0, &clk_lock);
 276         clk_register_clkdev(clk, "ssp_mux.4", NULL);
 277
 278         clk = mmp_clk_register_apbc("ssp4", "ssp1_mux", apbc_base + APBC_SSP4,
 279                                 10, 0, &clk_lock);
 280         clk_register_clkdev(clk, NULL, "mmp-ssp.4");
 281
 282         clk = mmp_clk_register_apmu("dfc", "pll1_4", apmu_base + APMU_DFC,
 283                                 0x19b, &clk_lock);
 284         clk_register_clkdev(clk, NULL, "pxa3xx-nand.0");
 285
 286         clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent,
 287                                 ARRAY_SIZE(sdh_parent),
 288                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 289                                 apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
 290         clk_register_clkdev(clk, "sdh0_mux", NULL);
 291
 292         clk = mmp_clk_register_apmu("sdh0", "sdh_mux", apmu_base + APMU_SDH0,
 293                                 0x1b, &clk_lock);
 294         clk_register_clkdev(clk, NULL, "sdhci-pxa.0");
 295
 296         clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent,
 297                                 ARRAY_SIZE(sdh_parent),
 298                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 299                                 apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
 300         clk_register_clkdev(clk, "sdh1_mux", NULL);
 301
 302         clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", apmu_base + APMU_SDH1,
 303                                 0x1b, &clk_lock);
 304         clk_register_clkdev(clk, NULL, "sdhci-pxa.1");
 305
 306         clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB,
 307                                 0x9, &clk_lock);
 308         clk_register_clkdev(clk, "usb_clk", NULL);
 309
 310         clk = mmp_clk_register_apmu("sph", "usb_pll", apmu_base + APMU_USB,
 311                                 0x12, &clk_lock);
 312         clk_register_clkdev(clk, "sph_clk", NULL);
 313
 314         clk = clk_register_mux(NULL, "disp0_mux", disp_parent,
 315                                 ARRAY_SIZE(disp_parent),
 316                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 317                                 apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
 318         clk_register_clkdev(clk, "disp_mux.0", NULL);
 319
 320         clk = mmp_clk_register_apmu("disp0", "disp0_mux",
 321                                 apmu_base + APMU_DISP0, 0x1b, &clk_lock);
 322         clk_register_clkdev(clk, "fnclk", "mmp-disp.0");
 323
 324         clk = mmp_clk_register_apmu("disp0_hclk", "disp0_mux",
 325                                 apmu_base + APMU_DISP0, 0x24, &clk_lock);
 326         clk_register_clkdev(clk, "hclk", "mmp-disp.0");
 327
 328         clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent,
 329                                 ARRAY_SIZE(ccic_parent),
 330                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 331                                 apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
 332         clk_register_clkdev(clk, "ccic_mux.0", NULL);
 333
 334         clk = mmp_clk_register_apmu("ccic0", "ccic0_mux",
 335                                 apmu_base + APMU_CCIC0, 0x1b, &clk_lock);
 336         clk_register_clkdev(clk, "fnclk", "mmp-ccic.0");
 337
 338         clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
 339                                 ARRAY_SIZE(ccic_phy_parent),
 340                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 341                                 apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock);
 342         clk_register_clkdev(clk, "ccic_phy_mux.0", NULL);
 343
 344         clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
 345                                 apmu_base + APMU_CCIC0, 0x24, &clk_lock);
 346         clk_register_clkdev(clk, "phyclk", "mmp-ccic.0");
 347
 348         clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
 349                                 CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
 350                                 10, 5, 0, &clk_lock);
 351         clk_register_clkdev(clk, "sphyclk_div", NULL);
 352
 353         clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
 354                                 apmu_base + APMU_CCIC0, 0x300, &clk_lock);
 355         clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0");
 356 }