kernel/drivers/clk/mmp/clk-pxa910.c

   1 /*
   2  * pxa910 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        0x18
  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       0x1c
  34 #define APBC_SSP1       0x20
  35 #define APBC_SSP2       0x4c
  36 #define APBCP_TWSI1     0x28
  37 #define APBCP_UART2     0x1c
  38 #define APMU_SDH0       0x54
  39 #define APMU_SDH1       0x58
  40 #define APMU_USB        0x5c
  41 #define APMU_DISP0      0x4c
  42 #define APMU_CCIC0      0x50
  43 #define APMU_DFC        0x60
  44 #define MPMU_UART_PLL   0x14
  45
  46 static DEFINE_SPINLOCK(clk_lock);
  47
  48 static struct mmp_clk_factor_masks uart_factor_masks = {
  49         .factor = 2,
  50         .num_mask = 0x1fff,
  51         .den_mask = 0x1fff,
  52         .num_shift = 16,
  53         .den_shift = 0,
  54 };
  55
  56 static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
  57         {.num = 8125, .den = 1536},     /*14.745MHZ */
  58 };
  59
  60 static const char *uart_parent[] = {"pll1_3_16", "uart_pll"};
  61 static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"};
  62 static const char *sdh_parent[] = {"pll1_12", "pll1_13"};
  63 static const char *disp_parent[] = {"pll1_2", "pll1_12"};
  64 static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
  65 static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
  66
  67 void __init pxa910_clk_init(void)
  68 {
  69         struct clk *clk;
  70         struct clk *uart_pll;
  71         void __iomem *mpmu_base;
  72         void __iomem *apmu_base;
  73         void __iomem *apbcp_base;
  74         void __iomem *apbc_base;
  75
  76         mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K);
  77         if (mpmu_base == NULL) {
  78                 pr_err("error to ioremap MPMU base\n");
  79                 return;
  80         }
  81
  82         apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
  83         if (apmu_base == NULL) {
  84                 pr_err("error to ioremap APMU base\n");
  85                 return;
  86         }
  87
  88         apbcp_base = ioremap(APB_PHYS_BASE + 0x3b000, SZ_4K);
  89         if (apbcp_base == NULL) {
  90                 pr_err("error to ioremap APBC extension base\n");
  91                 return;
  92         }
  93
  94         apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K);
  95         if (apbc_base == NULL) {
  96                 pr_err("error to ioremap APBC base\n");
  97                 return;
  98         }
  99
 100         clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200);
 101         clk_register_clkdev(clk, "clk32", NULL);
 102
 103         clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
 104                                 26000000);
 105         clk_register_clkdev(clk, "vctcxo", NULL);
 106
 107         clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT,
 108                                 624000000);
 109         clk_register_clkdev(clk, "pll1", NULL);
 110
 111         clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",
 112                                 CLK_SET_RATE_PARENT, 1, 2);
 113         clk_register_clkdev(clk, "pll1_2", NULL);
 114
 115         clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2",
 116                                 CLK_SET_RATE_PARENT, 1, 2);
 117         clk_register_clkdev(clk, "pll1_4", NULL);
 118
 119         clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4",
 120                                 CLK_SET_RATE_PARENT, 1, 2);
 121         clk_register_clkdev(clk, "pll1_8", NULL);
 122
 123         clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8",
 124                                 CLK_SET_RATE_PARENT, 1, 2);
 125         clk_register_clkdev(clk, "pll1_16", NULL);
 126
 127         clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2",
 128                                 CLK_SET_RATE_PARENT, 1, 3);
 129         clk_register_clkdev(clk, "pll1_6", NULL);
 130
 131         clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6",
 132                                 CLK_SET_RATE_PARENT, 1, 2);
 133         clk_register_clkdev(clk, "pll1_12", NULL);
 134
 135         clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12",
 136                                 CLK_SET_RATE_PARENT, 1, 2);
 137         clk_register_clkdev(clk, "pll1_24", NULL);
 138
 139         clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24",
 140                                 CLK_SET_RATE_PARENT, 1, 2);
 141         clk_register_clkdev(clk, "pll1_48", NULL);
 142
 143         clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48",
 144                                 CLK_SET_RATE_PARENT, 1, 2);
 145         clk_register_clkdev(clk, "pll1_96", NULL);
 146
 147         clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1",
 148                                 CLK_SET_RATE_PARENT, 1, 13);
 149         clk_register_clkdev(clk, "pll1_13", NULL);
 150
 151         clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1",
 152                                 CLK_SET_RATE_PARENT, 2, 3);
 153         clk_register_clkdev(clk, "pll1_13_1_5", NULL);
 154
 155         clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1",
 156                                 CLK_SET_RATE_PARENT, 2, 3);
 157         clk_register_clkdev(clk, "pll1_2_1_5", NULL);
 158
 159         clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1",
 160                                 CLK_SET_RATE_PARENT, 3, 16);
 161         clk_register_clkdev(clk, "pll1_3_16", NULL);
 162
 163         uart_pll =  mmp_clk_register_factor("uart_pll", "pll1_4", 0,
 164                                 mpmu_base + MPMU_UART_PLL,
 165                                 &uart_factor_masks, uart_factor_tbl,
 166                                 ARRAY_SIZE(uart_factor_tbl), &clk_lock);
 167         clk_set_rate(uart_pll, 14745600);
 168         clk_register_clkdev(uart_pll, "uart_pll", NULL);
 169
 170         clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5",
 171                                 apbc_base + APBC_TWSI0, 10, 0, &clk_lock);
 172         clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0");
 173
 174         clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5",
 175                                 apbcp_base + APBCP_TWSI1, 10, 0, &clk_lock);
 176         clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1");
 177
 178         clk = mmp_clk_register_apbc("gpio", "vctcxo",
 179                                 apbc_base + APBC_GPIO, 10, 0, &clk_lock);
 180         clk_register_clkdev(clk, NULL, "mmp-gpio");
 181
 182         clk = mmp_clk_register_apbc("kpc", "clk32",
 183                                 apbc_base + APBC_KPC, 10, 0, &clk_lock);
 184         clk_register_clkdev(clk, NULL, "pxa27x-keypad");
 185
 186         clk = mmp_clk_register_apbc("rtc", "clk32",
 187                                 apbc_base + APBC_RTC, 10, 0, &clk_lock);
 188         clk_register_clkdev(clk, NULL, "sa1100-rtc");
 189
 190         clk = mmp_clk_register_apbc("pwm0", "pll1_48",
 191                                 apbc_base + APBC_PWM0, 10, 0, &clk_lock);
 192         clk_register_clkdev(clk, NULL, "pxa910-pwm.0");
 193
 194         clk = mmp_clk_register_apbc("pwm1", "pll1_48",
 195                                 apbc_base + APBC_PWM1, 10, 0, &clk_lock);
 196         clk_register_clkdev(clk, NULL, "pxa910-pwm.1");
 197
 198         clk = mmp_clk_register_apbc("pwm2", "pll1_48",
 199                                 apbc_base + APBC_PWM2, 10, 0, &clk_lock);
 200         clk_register_clkdev(clk, NULL, "pxa910-pwm.2");
 201
 202         clk = mmp_clk_register_apbc("pwm3", "pll1_48",
 203                                 apbc_base + APBC_PWM3, 10, 0, &clk_lock);
 204         clk_register_clkdev(clk, NULL, "pxa910-pwm.3");
 205
 206         clk = clk_register_mux(NULL, "uart0_mux", uart_parent,
 207                                 ARRAY_SIZE(uart_parent),
 208                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 209                                 apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
 210         clk_set_parent(clk, uart_pll);
 211         clk_register_clkdev(clk, "uart_mux.0", NULL);
 212
 213         clk = mmp_clk_register_apbc("uart0", "uart0_mux",
 214                                 apbc_base + APBC_UART0, 10, 0, &clk_lock);
 215         clk_register_clkdev(clk, NULL, "pxa2xx-uart.0");
 216
 217         clk = clk_register_mux(NULL, "uart1_mux", uart_parent,
 218                                 ARRAY_SIZE(uart_parent),
 219                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 220                                 apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
 221         clk_set_parent(clk, uart_pll);
 222         clk_register_clkdev(clk, "uart_mux.1", NULL);
 223
 224         clk = mmp_clk_register_apbc("uart1", "uart1_mux",
 225                                 apbc_base + APBC_UART1, 10, 0, &clk_lock);
 226         clk_register_clkdev(clk, NULL, "pxa2xx-uart.1");
 227
 228         clk = clk_register_mux(NULL, "uart2_mux", uart_parent,
 229                                 ARRAY_SIZE(uart_parent),
 230                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 231                                 apbcp_base + APBCP_UART2, 4, 3, 0, &clk_lock);
 232         clk_set_parent(clk, uart_pll);
 233         clk_register_clkdev(clk, "uart_mux.2", NULL);
 234
 235         clk = mmp_clk_register_apbc("uart2", "uart2_mux",
 236                                 apbcp_base + APBCP_UART2, 10, 0, &clk_lock);
 237         clk_register_clkdev(clk, NULL, "pxa2xx-uart.2");
 238
 239         clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent,
 240                                 ARRAY_SIZE(ssp_parent),
 241                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 242                                 apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
 243         clk_register_clkdev(clk, "uart_mux.0", NULL);
 244
 245         clk = mmp_clk_register_apbc("ssp0", "ssp0_mux",
 246                                 apbc_base + APBC_SSP0, 10, 0, &clk_lock);
 247         clk_register_clkdev(clk, NULL, "mmp-ssp.0");
 248
 249         clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent,
 250                                 ARRAY_SIZE(ssp_parent),
 251                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 252                                 apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock);
 253         clk_register_clkdev(clk, "ssp_mux.1", NULL);
 254
 255         clk = mmp_clk_register_apbc("ssp1", "ssp1_mux",
 256                                 apbc_base + APBC_SSP1, 10, 0, &clk_lock);
 257         clk_register_clkdev(clk, NULL, "mmp-ssp.1");
 258
 259         clk = mmp_clk_register_apmu("dfc", "pll1_4",
 260                                 apmu_base + APMU_DFC, 0x19b, &clk_lock);
 261         clk_register_clkdev(clk, NULL, "pxa3xx-nand.0");
 262
 263         clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent,
 264                                 ARRAY_SIZE(sdh_parent),
 265                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 266                                 apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
 267         clk_register_clkdev(clk, "sdh0_mux", NULL);
 268
 269         clk = mmp_clk_register_apmu("sdh0", "sdh_mux",
 270                                 apmu_base + APMU_SDH0, 0x1b, &clk_lock);
 271         clk_register_clkdev(clk, NULL, "sdhci-pxa.0");
 272
 273         clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent,
 274                                 ARRAY_SIZE(sdh_parent),
 275                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 276                                 apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
 277         clk_register_clkdev(clk, "sdh1_mux", NULL);
 278
 279         clk = mmp_clk_register_apmu("sdh1", "sdh1_mux",
 280                                 apmu_base + APMU_SDH1, 0x1b, &clk_lock);
 281         clk_register_clkdev(clk, NULL, "sdhci-pxa.1");
 282
 283         clk = mmp_clk_register_apmu("usb", "usb_pll",
 284                                 apmu_base + APMU_USB, 0x9, &clk_lock);
 285         clk_register_clkdev(clk, "usb_clk", NULL);
 286
 287         clk = mmp_clk_register_apmu("sph", "usb_pll",
 288                                 apmu_base + APMU_USB, 0x12, &clk_lock);
 289         clk_register_clkdev(clk, "sph_clk", NULL);
 290
 291         clk = clk_register_mux(NULL, "disp0_mux", disp_parent,
 292                                 ARRAY_SIZE(disp_parent),
 293                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 294                                 apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
 295         clk_register_clkdev(clk, "disp_mux.0", NULL);
 296
 297         clk = mmp_clk_register_apmu("disp0", "disp0_mux",
 298                                 apmu_base + APMU_DISP0, 0x1b, &clk_lock);
 299         clk_register_clkdev(clk, NULL, "mmp-disp.0");
 300
 301         clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent,
 302                                 ARRAY_SIZE(ccic_parent),
 303                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 304                                 apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
 305         clk_register_clkdev(clk, "ccic_mux.0", NULL);
 306
 307         clk = mmp_clk_register_apmu("ccic0", "ccic0_mux",
 308                                 apmu_base + APMU_CCIC0, 0x1b, &clk_lock);
 309         clk_register_clkdev(clk, "fnclk", "mmp-ccic.0");
 310
 311         clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
 312                                 ARRAY_SIZE(ccic_phy_parent),
 313                                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
 314                                 apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock);
 315         clk_register_clkdev(clk, "ccic_phy_mux.0", NULL);
 316
 317         clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
 318                                 apmu_base + APMU_CCIC0, 0x24, &clk_lock);
 319         clk_register_clkdev(clk, "phyclk", "mmp-ccic.0");
 320
 321         clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
 322                                 CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
 323                                 10, 5, 0, &clk_lock);
 324         clk_register_clkdev(clk, "sphyclk_div", NULL);
 325
 326         clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
 327                                 apmu_base + APMU_CCIC0, 0x300, &clk_lock);
 328         clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0");
 329 }