arch/arm/mach-mmp/clock-mmp2.c

   1 #include <linux/module.h>
   2 #include <linux/kernel.h>
   3 #include <linux/init.h>
   4 #include <linux/list.h>
   5 #include <linux/io.h>
   6 #include <linux/clk.h>
   7
   8 #include <mach/addr-map.h>
   9
  10 #include "common.h"
  11 #include "clock.h"
  12
  13 /*
  14  * APB Clock register offsets for MMP2
  15  */
  16 #define APBC_RTC        APBC_REG(0x000)
  17 #define APBC_TWSI1      APBC_REG(0x004)
  18 #define APBC_TWSI2      APBC_REG(0x008)
  19 #define APBC_TWSI3      APBC_REG(0x00c)
  20 #define APBC_TWSI4      APBC_REG(0x010)
  21 #define APBC_KPC        APBC_REG(0x018)
  22 #define APBC_UART1      APBC_REG(0x02c)
  23 #define APBC_UART2      APBC_REG(0x030)
  24 #define APBC_UART3      APBC_REG(0x034)
  25 #define APBC_GPIO       APBC_REG(0x038)
  26 #define APBC_PWM0       APBC_REG(0x03c)
  27 #define APBC_PWM1       APBC_REG(0x040)
  28 #define APBC_PWM2       APBC_REG(0x044)
  29 #define APBC_PWM3       APBC_REG(0x048)
  30 #define APBC_SSP0       APBC_REG(0x04c)
  31 #define APBC_SSP1       APBC_REG(0x050)
  32 #define APBC_SSP2       APBC_REG(0x054)
  33 #define APBC_SSP3       APBC_REG(0x058)
  34 #define APBC_SSP4       APBC_REG(0x05c)
  35 #define APBC_SSP5       APBC_REG(0x060)
  36 #define APBC_TWSI5      APBC_REG(0x07c)
  37 #define APBC_TWSI6      APBC_REG(0x080)
  38 #define APBC_UART4      APBC_REG(0x088)
  39
  40 #define APMU_USB        APMU_REG(0x05c)
  41 #define APMU_NAND       APMU_REG(0x060)
  42 #define APMU_SDH0       APMU_REG(0x054)
  43 #define APMU_SDH1       APMU_REG(0x058)
  44 #define APMU_SDH2       APMU_REG(0x0e8)
  45 #define APMU_SDH3       APMU_REG(0x0ec)
  46
  47 static void sdhc_clk_enable(struct clk *clk)
  48 {
  49         uint32_t clk_rst;
  50
  51         clk_rst  =  __raw_readl(clk->clk_rst);
  52         clk_rst |= clk->enable_val;
  53         __raw_writel(clk_rst, clk->clk_rst);
  54 }
  55
  56 static void sdhc_clk_disable(struct clk *clk)
  57 {
  58         uint32_t clk_rst;
  59
  60         clk_rst  =  __raw_readl(clk->clk_rst);
  61         clk_rst &= ~clk->enable_val;
  62         __raw_writel(clk_rst, clk->clk_rst);
  63 }
  64
  65 struct clkops sdhc_clk_ops = {
  66         .enable         = sdhc_clk_enable,
  67         .disable        = sdhc_clk_disable,
  68 };
  69
  70 /* APB peripheral clocks */
  71 static APBC_CLK(uart1, UART1, 1, 26000000);
  72 static APBC_CLK(uart2, UART2, 1, 26000000);
  73 static APBC_CLK(uart3, UART3, 1, 26000000);
  74 static APBC_CLK(uart4, UART4, 1, 26000000);
  75 static APBC_CLK(twsi1, TWSI1, 0, 26000000);
  76 static APBC_CLK(twsi2, TWSI2, 0, 26000000);
  77 static APBC_CLK(twsi3, TWSI3, 0, 26000000);
  78 static APBC_CLK(twsi4, TWSI4, 0, 26000000);
  79 static APBC_CLK(twsi5, TWSI5, 0, 26000000);
  80 static APBC_CLK(twsi6, TWSI6, 0, 26000000);
  81 static APBC_CLK(gpio, GPIO, 0, 26000000);
  82
  83 static APMU_CLK(nand, NAND, 0xbf, 100000000);
  84 static APMU_CLK_OPS(sdh0, SDH0, 0x1b, 200000000, &sdhc_clk_ops);
  85 static APMU_CLK_OPS(sdh1, SDH1, 0x1b, 200000000, &sdhc_clk_ops);
  86 static APMU_CLK_OPS(sdh2, SDH2, 0x1b, 200000000, &sdhc_clk_ops);
  87 static APMU_CLK_OPS(sdh3, SDH3, 0x1b, 200000000, &sdhc_clk_ops);
  88
  89 static struct clk_lookup mmp2_clkregs[] = {
  90         INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
  91         INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
  92         INIT_CLKREG(&clk_uart3, "pxa2xx-uart.2", NULL),
  93         INIT_CLKREG(&clk_uart4, "pxa2xx-uart.3", NULL),
  94         INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.0", NULL),
  95         INIT_CLKREG(&clk_twsi2, "pxa2xx-i2c.1", NULL),
  96         INIT_CLKREG(&clk_twsi3, "pxa2xx-i2c.2", NULL),
  97         INIT_CLKREG(&clk_twsi4, "pxa2xx-i2c.3", NULL),
  98         INIT_CLKREG(&clk_twsi5, "pxa2xx-i2c.4", NULL),
  99         INIT_CLKREG(&clk_twsi6, "pxa2xx-i2c.5", NULL),
 100         INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
 101         INIT_CLKREG(&clk_gpio, "mmp2-gpio", NULL),
 102         INIT_CLKREG(&clk_sdh0, "sdhci-pxav3.0", "PXA-SDHCLK"),
 103         INIT_CLKREG(&clk_sdh1, "sdhci-pxav3.1", "PXA-SDHCLK"),
 104         INIT_CLKREG(&clk_sdh2, "sdhci-pxav3.2", "PXA-SDHCLK"),
 105         INIT_CLKREG(&clk_sdh3, "sdhci-pxav3.3", "PXA-SDHCLK"),
 106 };
 107
 108 void __init mmp2_clk_init(void)
 109 {
 110         clkdev_add_table(ARRAY_AND_SIZE(mmp2_clkregs));
 111 }