Commit 84a62e6ed7efe769e359aebbeab58b20ea1beba9

Authored by Chao Xie
Committed by Mike Turquette
1 parent e1b53b3d0f

clk: mmp: add clock definition for pxa910

Initialize the clocks for pxa910

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

Showing 2 changed files with 321 additions and 0 deletions Side-by-side Diff

drivers/clk/mmp/Makefile
... ... @@ -5,4 +5,5 @@
5 5 obj-y += clk-apbc.o clk-apmu.o clk-frac.o
6 6  
7 7 obj-$(CONFIG_CPU_PXA168) += clk-pxa168.o
  8 +obj-$(CONFIG_CPU_PXA910) += clk-pxa910.o
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 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 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));
  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, "pxa-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), CLK_SET_RATE_PARENT,
  208 + apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
  209 + clk_set_parent(clk, uart_pll);
  210 + clk_register_clkdev(clk, "uart_mux.0", NULL);
  211 +
  212 + clk = mmp_clk_register_apbc("uart0", "uart0_mux",
  213 + apbc_base + APBC_UART0, 10, 0, &clk_lock);
  214 + clk_register_clkdev(clk, NULL, "pxa2xx-uart.0");
  215 +
  216 + clk = clk_register_mux(NULL, "uart1_mux", uart_parent,
  217 + ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
  218 + apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
  219 + clk_set_parent(clk, uart_pll);
  220 + clk_register_clkdev(clk, "uart_mux.1", NULL);
  221 +
  222 + clk = mmp_clk_register_apbc("uart1", "uart1_mux",
  223 + apbc_base + APBC_UART1, 10, 0, &clk_lock);
  224 + clk_register_clkdev(clk, NULL, "pxa2xx-uart.1");
  225 +
  226 + clk = clk_register_mux(NULL, "uart2_mux", uart_parent,
  227 + ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
  228 + apbcp_base + APBCP_UART2, 4, 3, 0, &clk_lock);
  229 + clk_set_parent(clk, uart_pll);
  230 + clk_register_clkdev(clk, "uart_mux.2", NULL);
  231 +
  232 + clk = mmp_clk_register_apbc("uart2", "uart2_mux",
  233 + apbcp_base + APBCP_UART2, 10, 0, &clk_lock);
  234 + clk_register_clkdev(clk, NULL, "pxa2xx-uart.2");
  235 +
  236 + clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent,
  237 + ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
  238 + apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
  239 + clk_register_clkdev(clk, "uart_mux.0", NULL);
  240 +
  241 + clk = mmp_clk_register_apbc("ssp0", "ssp0_mux",
  242 + apbc_base + APBC_SSP0, 10, 0, &clk_lock);
  243 + clk_register_clkdev(clk, NULL, "mmp-ssp.0");
  244 +
  245 + clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent,
  246 + ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
  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",
  251 + apbc_base + APBC_SSP1, 10, 0, &clk_lock);
  252 + clk_register_clkdev(clk, NULL, "mmp-ssp.1");
  253 +
  254 + clk = mmp_clk_register_apmu("dfc", "pll1_4",
  255 + apmu_base + APMU_DFC, 0x19b, &clk_lock);
  256 + clk_register_clkdev(clk, NULL, "pxa3xx-nand.0");
  257 +
  258 + clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent,
  259 + ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT,
  260 + apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
  261 + clk_register_clkdev(clk, "sdh0_mux", NULL);
  262 +
  263 + clk = mmp_clk_register_apmu("sdh0", "sdh_mux",
  264 + apmu_base + APMU_SDH0, 0x1b, &clk_lock);
  265 + clk_register_clkdev(clk, NULL, "sdhci-pxa.0");
  266 +
  267 + clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent,
  268 + ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT,
  269 + apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
  270 + clk_register_clkdev(clk, "sdh1_mux", NULL);
  271 +
  272 + clk = mmp_clk_register_apmu("sdh1", "sdh1_mux",
  273 + apmu_base + APMU_SDH1, 0x1b, &clk_lock);
  274 + clk_register_clkdev(clk, NULL, "sdhci-pxa.1");
  275 +
  276 + clk = mmp_clk_register_apmu("usb", "usb_pll",
  277 + apmu_base + APMU_USB, 0x9, &clk_lock);
  278 + clk_register_clkdev(clk, "usb_clk", NULL);
  279 +
  280 + clk = mmp_clk_register_apmu("sph", "usb_pll",
  281 + apmu_base + APMU_USB, 0x12, &clk_lock);
  282 + clk_register_clkdev(clk, "sph_clk", NULL);
  283 +
  284 + clk = clk_register_mux(NULL, "disp0_mux", disp_parent,
  285 + ARRAY_SIZE(disp_parent), CLK_SET_RATE_PARENT,
  286 + apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
  287 + clk_register_clkdev(clk, "disp_mux.0", NULL);
  288 +
  289 + clk = mmp_clk_register_apmu("disp0", "disp0_mux",
  290 + apmu_base + APMU_DISP0, 0x1b, &clk_lock);
  291 + clk_register_clkdev(clk, NULL, "mmp-disp.0");
  292 +
  293 + clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent,
  294 + ARRAY_SIZE(ccic_parent), CLK_SET_RATE_PARENT,
  295 + apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
  296 + clk_register_clkdev(clk, "ccic_mux.0", NULL);
  297 +
  298 + clk = mmp_clk_register_apmu("ccic0", "ccic0_mux",
  299 + apmu_base + APMU_CCIC0, 0x1b, &clk_lock);
  300 + clk_register_clkdev(clk, "fnclk", "mmp-ccic.0");
  301 +
  302 + clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
  303 + ARRAY_SIZE(ccic_phy_parent),
  304 + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
  305 + 7, 1, 0, &clk_lock);
  306 + clk_register_clkdev(clk, "ccic_phy_mux.0", NULL);
  307 +
  308 + clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
  309 + apmu_base + APMU_CCIC0, 0x24, &clk_lock);
  310 + clk_register_clkdev(clk, "phyclk", "mmp-ccic.0");
  311 +
  312 + clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
  313 + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
  314 + 10, 5, 0, &clk_lock);
  315 + clk_register_clkdev(clk, "sphyclk_div", NULL);
  316 +
  317 + clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
  318 + apmu_base + APMU_CCIC0, 0x300, &clk_lock);
  319 + clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0");
  320 +}