kernel/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/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/spinlock.h>
  15 #include <linux/io.h>
  16 #include <linux/delay.h>
  17 #include <linux/err.h>
  18
  19 #include <mach/addr-map.h>
  20
  21 #include "clk.h"
  22
  23 #define APBC_RTC        0x28
  24 #define APBC_TWSI0      0x2c
  25 #define APBC_KPC        0x30
  26 #define APBC_UART0      0x0
  27 #define APBC_UART1      0x4
  28 #define APBC_GPIO       0x8
  29 #define APBC_PWM0       0xc
  30 #define APBC_PWM1       0x10
  31 #define APBC_PWM2       0x14
  32 #define APBC_PWM3       0x18
  33 #define APBC_SSP0       0x81c
  34 #define APBC_SSP1       0x820
  35 #define APBC_SSP2       0x84c
  36 #define APBC_SSP3       0x858
  37 #define APBC_SSP4       0x85c
  38 #define APBC_TWSI1      0x6c
  39 #define APBC_UART2      0x70
  40 #define APMU_SDH0       0x54
  41 #define APMU_SDH1       0x58
  42 #define APMU_USB        0x5c
  43 #define APMU_DISP0      0x4c
  44 #define APMU_CCIC0      0x50
  45 #define APMU_DFC        0x60
  46 #define MPMU_UART_PLL   0x14
  47
  48 static DEFINE_SPINLOCK(clk_lock);
  49
  50 static struct mmp_clk_factor_masks uart_factor_masks = {
  51         .factor = 2,
  52         .num_mask = 0x1fff,
  53         .den_mask = 0x1fff,
  54         .num_shift = 16,
  55         .den_shift = 0,
  56 };
  57
  58 static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
  59         {.num = 8125, .den = 1536},     /*14.745MHZ */
  60 };
  61
  62 static const char *uart_parent[] = {"pll1_3_16", "uart_pll"};
  63 static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"};
  64 static const char *sdh_parent[] = {"pll1_12", "pll1_13"};
  65 static const char *disp_parent[] = {"pll1_2", "pll1_12"};
  66 static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
  67 static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
  68
  69 void __init pxa168_clk_init(void)
  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(APB_PHYS_BASE + 0x50000, SZ_4K);
  78         if (mpmu_base == NULL) {
  79                 pr_err("error to ioremap MPMU base\n");
  80                 return;
  81         }
  82
  83         apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
  84         if (apmu_base == NULL) {
  85                 pr_err("error to ioremap APMU base\n");
  86                 return;
  87         }
  88
  89         apbc_base = ioremap(APB_PHYS_BASE + 0x15000, 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, CLK_IS_ROOT, 3200);
  96         clk_register_clkdev(clk, "clk32", NULL);
  97
  98         clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
  99                                 26000000);
 100         clk_register_clkdev(clk, "vctcxo", NULL);
 101
 102         clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT,
 103                                 624000000);
 104         clk_register_clkdev(clk, "pll1", NULL);
 105
 106         clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",
 107                                 CLK_SET_RATE_PARENT, 1, 2);
 108         clk_register_clkdev(clk, "pll1_2", NULL);
 109
 110         clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2",
 111                                 CLK_SET_RATE_PARENT, 1, 2);
 112         clk_register_clkdev(clk, "pll1_4", NULL);
 113
 114         clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4",
 115                                 CLK_SET_RATE_PARENT, 1, 2);
 116         clk_register_clkdev(clk, "pll1_8", NULL);
 117
 118         clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8",
 119                                 CLK_SET_RATE_PARENT, 1, 2);
 120         clk_register_clkdev(clk, "pll1_16", NULL);
 121
 122         clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2",
 123                                 CLK_SET_RATE_PARENT, 1, 3);
 124         clk_register_clkdev(clk, "pll1_6", NULL);
 125
 126         clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6",
 127                                 CLK_SET_RATE_PARENT, 1, 2);
 128         clk_register_clkdev(clk, "pll1_12", NULL);
 129
 130         clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12",
 131                                 CLK_SET_RATE_PARENT, 1, 2);
 132         clk_register_clkdev(clk, "pll1_24", NULL);
 133
 134         clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24",
 135                                 CLK_SET_RATE_PARENT, 1, 2);
 136         clk_register_clkdev(clk, "pll1_48", NULL);
 137
 138         clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48",
 139                                 CLK_SET_RATE_PARENT, 1, 2);
 140         clk_register_clkdev(clk, "pll1_96", NULL);
 141
 142         clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1",
 143                                 CLK_SET_RATE_PARENT, 1, 13);
 144         clk_register_clkdev(clk, "pll1_13", NULL);
 145
 146         clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1",
 147                                 CLK_SET_RATE_PARENT, 2, 3);
 148         clk_register_clkdev(clk, "pll1_13_1_5", NULL);
 149
 150         clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1",
 151                                 CLK_SET_RATE_PARENT, 2, 3);
 152         clk_register_clkdev(clk, "pll1_2_1_5", NULL);
 153
 154         clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1",
 155                                 CLK_SET_RATE_PARENT, 3, 16);
 156         clk_register_clkdev(clk, "pll1_3_16", NULL);
 157
 158         uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0,
 159                                 mpmu_base + MPMU_UART_PLL,
 160                                 &uart_factor_masks, uart_factor_tbl,
 161                                 ARRAY_SIZE(uart_factor_tbl), &clk_lock);
 162         clk_set_rate(uart_pll, 14745600);
 163         clk_register_clkdev(uart_pll, "uart_pll", NULL);
 164
 165         clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5",
 166                                 apbc_base + APBC_TWSI0, 10, 0, &clk_lock);
 167         clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0");
 168
 169         clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5",
 170                                 apbc_base + APBC_TWSI1, 10, 0, &clk_lock);
 171         clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1");
 172
 173         clk = mmp_clk_register_apbc("gpio", "vctcxo",
 174                                 apbc_base + APBC_GPIO, 10, 0, &clk_lock);
 175         clk_register_clkdev(clk, NULL, "mmp-gpio");
 176
 177         clk = mmp_clk_register_apbc("kpc", "clk32",
 178                                 apbc_base + APBC_KPC, 10, 0, &clk_lock);
 179         clk_register_clkdev(clk, NULL, "pxa27x-keypad");
 180
 181         clk = mmp_clk_register_apbc("rtc", "clk32",
 182                                 apbc_base + APBC_RTC, 10, 0, &clk_lock);
 183         clk_register_clkdev(clk, NULL, "sa1100-rtc");
 184
 185         clk = mmp_clk_register_apbc("pwm0", "pll1_48",
 186                                 apbc_base + APBC_PWM0, 10, 0, &clk_lock);
 187         clk_register_clkdev(clk, NULL, "pxa168-pwm.0");
 188
 189         clk = mmp_clk_register_apbc("pwm1", "pll1_48",
 190                                 apbc_base + APBC_PWM1, 10, 0, &clk_lock);
 191         clk_register_clkdev(clk, NULL, "pxa168-pwm.1");
 192
 193         clk = mmp_clk_register_apbc("pwm2", "pll1_48",
 194                                 apbc_base + APBC_PWM2, 10, 0, &clk_lock);
 195         clk_register_clkdev(clk, NULL, "pxa168-pwm.2");
 196
 197         clk = mmp_clk_register_apbc("pwm3", "pll1_48",
 198                                 apbc_base + APBC_PWM3, 10, 0, &clk_lock);
 199         clk_register_clkdev(clk, NULL, "pxa168-pwm.3");
 200
 201         clk = clk_register_mux(NULL, "uart0_mux", uart_parent,
 202                                 ARRAY_SIZE(uart_parent),
 203                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 204                                 apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
 205         clk_set_parent(clk, uart_pll);
 206         clk_register_clkdev(clk, "uart_mux.0", NULL);
 207
 208         clk = mmp_clk_register_apbc("uart0", "uart0_mux",
 209                                 apbc_base + APBC_UART0, 10, 0, &clk_lock);
 210         clk_register_clkdev(clk, NULL, "pxa2xx-uart.0");
 211
 212         clk = clk_register_mux(NULL, "uart1_mux", uart_parent,
 213                                 ARRAY_SIZE(uart_parent),
 214                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 215                                 apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
 216         clk_set_parent(clk, uart_pll);
 217         clk_register_clkdev(clk, "uart_mux.1", NULL);
 218
 219         clk = mmp_clk_register_apbc("uart1", "uart1_mux",
 220                                 apbc_base + APBC_UART1, 10, 0, &clk_lock);
 221         clk_register_clkdev(clk, NULL, "pxa2xx-uart.1");
 222
 223         clk = clk_register_mux(NULL, "uart2_mux", uart_parent,
 224                                 ARRAY_SIZE(uart_parent),
 225                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 226                                 apbc_base + APBC_UART2, 4, 3, 0, &clk_lock);
 227         clk_set_parent(clk, uart_pll);
 228         clk_register_clkdev(clk, "uart_mux.2", NULL);
 229
 230         clk = mmp_clk_register_apbc("uart2", "uart2_mux",
 231                                 apbc_base + APBC_UART2, 10, 0, &clk_lock);
 232         clk_register_clkdev(clk, NULL, "pxa2xx-uart.2");
 233
 234         clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent,
 235                                 ARRAY_SIZE(ssp_parent),
 236                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 237                                 apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
 238         clk_register_clkdev(clk, "uart_mux.0", NULL);
 239
 240         clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", apbc_base + APBC_SSP0,
 241                                 10, 0, &clk_lock);
 242         clk_register_clkdev(clk, NULL, "mmp-ssp.0");
 243
 244         clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent,
 245                                 ARRAY_SIZE(ssp_parent),
 246                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 247                                 apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock);
 248         clk_register_clkdev(clk, "ssp_mux.1", NULL);
 249
 250         clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", apbc_base + APBC_SSP1,
 251                                 10, 0, &clk_lock);
 252         clk_register_clkdev(clk, NULL, "mmp-ssp.1");
 253
 254         clk = clk_register_mux(NULL, "ssp2_mux", ssp_parent,
 255                                 ARRAY_SIZE(ssp_parent),
 256                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 257                                 apbc_base + APBC_SSP2, 4, 3, 0, &clk_lock);
 258         clk_register_clkdev(clk, "ssp_mux.2", NULL);
 259
 260         clk = mmp_clk_register_apbc("ssp2", "ssp1_mux", apbc_base + APBC_SSP2,
 261                                 10, 0, &clk_lock);
 262         clk_register_clkdev(clk, NULL, "mmp-ssp.2");
 263
 264         clk = clk_register_mux(NULL, "ssp3_mux", ssp_parent,
 265                                 ARRAY_SIZE(ssp_parent),
 266                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 267                                 apbc_base + APBC_SSP3, 4, 3, 0, &clk_lock);
 268         clk_register_clkdev(clk, "ssp_mux.3", NULL);
 269
 270         clk = mmp_clk_register_apbc("ssp3", "ssp1_mux", apbc_base + APBC_SSP3,
 271                                 10, 0, &clk_lock);
 272         clk_register_clkdev(clk, NULL, "mmp-ssp.3");
 273
 274         clk = clk_register_mux(NULL, "ssp4_mux", ssp_parent,
 275                                 ARRAY_SIZE(ssp_parent),
 276                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 277                                 apbc_base + APBC_SSP4, 4, 3, 0, &clk_lock);
 278         clk_register_clkdev(clk, "ssp_mux.4", NULL);
 279
 280         clk = mmp_clk_register_apbc("ssp4", "ssp1_mux", apbc_base + APBC_SSP4,
 281                                 10, 0, &clk_lock);
 282         clk_register_clkdev(clk, NULL, "mmp-ssp.4");
 283
 284         clk = mmp_clk_register_apmu("dfc", "pll1_4", apmu_base + APMU_DFC,
 285                                 0x19b, &clk_lock);
 286         clk_register_clkdev(clk, NULL, "pxa3xx-nand.0");
 287
 288         clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent,
 289                                 ARRAY_SIZE(sdh_parent),
 290                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 291                                 apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
 292         clk_register_clkdev(clk, "sdh0_mux", NULL);
 293
 294         clk = mmp_clk_register_apmu("sdh0", "sdh_mux", apmu_base + APMU_SDH0,
 295                                 0x1b, &clk_lock);
 296         clk_register_clkdev(clk, NULL, "sdhci-pxa.0");
 297
 298         clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent,
 299                                 ARRAY_SIZE(sdh_parent),
 300                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 301                                 apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
 302         clk_register_clkdev(clk, "sdh1_mux", NULL);
 303
 304         clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", apmu_base + APMU_SDH1,
 305                                 0x1b, &clk_lock);
 306         clk_register_clkdev(clk, NULL, "sdhci-pxa.1");
 307
 308         clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB,
 309                                 0x9, &clk_lock);
 310         clk_register_clkdev(clk, "usb_clk", NULL);
 311
 312         clk = mmp_clk_register_apmu("sph", "usb_pll", apmu_base + APMU_USB,
 313                                 0x12, &clk_lock);
 314         clk_register_clkdev(clk, "sph_clk", NULL);
 315
 316         clk = clk_register_mux(NULL, "disp0_mux", disp_parent,
 317                                 ARRAY_SIZE(disp_parent),
 318                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 319                                 apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
 320         clk_register_clkdev(clk, "disp_mux.0", NULL);
 321
 322         clk = mmp_clk_register_apmu("disp0", "disp0_mux",
 323                                 apmu_base + APMU_DISP0, 0x1b, &clk_lock);
 324         clk_register_clkdev(clk, "fnclk", "mmp-disp.0");
 325
 326         clk = mmp_clk_register_apmu("disp0_hclk", "disp0_mux",
 327                                 apmu_base + APMU_DISP0, 0x24, &clk_lock);
 328         clk_register_clkdev(clk, "hclk", "mmp-disp.0");
 329
 330         clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent,
 331                                 ARRAY_SIZE(ccic_parent),
 332                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 333                                 apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
 334         clk_register_clkdev(clk, "ccic_mux.0", NULL);
 335
 336         clk = mmp_clk_register_apmu("ccic0", "ccic0_mux",
 337                                 apmu_base + APMU_CCIC0, 0x1b, &clk_lock);
 338         clk_register_clkdev(clk, "fnclk", "mmp-ccic.0");
 339
 340         clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
 341                                 ARRAY_SIZE(ccic_phy_parent),
 342                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 343                                 apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock);
 344         clk_register_clkdev(clk, "ccic_phy_mux.0", NULL);
 345
 346         clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
 347                                 apmu_base + APMU_CCIC0, 0x24, &clk_lock);
 348         clk_register_clkdev(clk, "phyclk", "mmp-ccic.0");
 349
 350         clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
 351                                 CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
 352                                 10, 5, 0, &clk_lock);
 353         clk_register_clkdev(clk, "sphyclk_div", NULL);
 354
 355         clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
 356                                 apmu_base + APMU_CCIC0, 0x300, &clk_lock);
 357         clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0");
 358 }