linux-imx

/*

 * Copyright (C) 2012 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 */

#include <linux/mm.h>

#include <linux/delay.h>

#include <linux/clk.h>

#include <linux/io.h>

#include <linux/clkdev.h>

#include <linux/of.h>

#include <linux/err.h>

#include <soc/imx/revision.h>

#include <soc/imx/timer.h>

#include <asm/irq.h>

​

#include "clk.h"

​

#define MX35_CCM_BASE_ADDR  0x53f80000

#define MX35_GPT1_BASE_ADDR 0x53f90000

#define MX35_INT_GPT        (NR_IRQS_LEGACY + 29)

​

#define MXC_CCM_PDR0        0x04

#define MX35_CCM_PDR2       0x0c

#define MX35_CCM_PDR3       0x10

#define MX35_CCM_PDR4       0x14

#define MX35_CCM_MPCTL      0x1c

#define MX35_CCM_PPCTL      0x20

#define MX35_CCM_CGR0       0x2c

#define MX35_CCM_CGR1       0x30

#define MX35_CCM_CGR2       0x34

#define MX35_CCM_CGR3       0x38

​

struct arm_ahb_div {

    unsigned char arm, ahb, sel;

};

​

static struct arm_ahb_div clk_consumer[] = {

    { .arm = 1, .ahb = 4, .sel = 0},

    { .arm = 1, .ahb = 3, .sel = 1},

    { .arm = 2, .ahb = 2, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

    { .arm = 4, .ahb = 1, .sel = 0},

    { .arm = 1, .ahb = 5, .sel = 0},

    { .arm = 1, .ahb = 8, .sel = 0},

    { .arm = 1, .ahb = 6, .sel = 1},

    { .arm = 2, .ahb = 4, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

    { .arm = 4, .ahb = 2, .sel = 0},

    { .arm = 0, .ahb = 0, .sel = 0},

};

​

static char hsp_div_532[] = { 4, 8, 3, 0 };

static char hsp_div_400[] = { 3, 6, 3, 0 };

​

static struct clk_onecell_data clk_data;

​

static const char *std_sel[] = {"ppll", "arm"};

static const char *ipg_per_sel[] = {"ahb_per_div", "arm_per_div"};

​

enum mx35_clks {

    /*  0 */ ckih, mpll, ppll, mpll_075, arm, hsp, hsp_div, hsp_sel, ahb,

    /*  9 */ ipg, arm_per_div, ahb_per_div, ipg_per, uart_sel, uart_div,

    /* 15 */ esdhc_sel, esdhc1_div, esdhc2_div, esdhc3_div, spdif_sel,

    /* 20 */ spdif_div_pre, spdif_div_post, ssi_sel, ssi1_div_pre,

    /* 24 */ ssi1_div_post, ssi2_div_pre, ssi2_div_post, usb_sel, usb_div,

    /* 29 */ nfc_div, asrc_gate, pata_gate, audmux_gate, can1_gate,

    /* 34 */ can2_gate, cspi1_gate, cspi2_gate, ect_gate, edio_gate,

    /* 39 */ emi_gate, epit1_gate, epit2_gate, esai_gate, esdhc1_gate,

    /* 44 */ esdhc2_gate, esdhc3_gate, fec_gate, gpio1_gate, gpio2_gate,

    /* 49 */ gpio3_gate, gpt_gate, i2c1_gate, i2c2_gate, i2c3_gate,

    /* 54 */ iomuxc_gate, ipu_gate, kpp_gate, mlb_gate, mshc_gate,

    /* 59 */ owire_gate, pwm_gate, rngc_gate, rtc_gate, rtic_gate, scc_gate,

    /* 65 */ sdma_gate, spba_gate, spdif_gate, ssi1_gate, ssi2_gate,

    /* 70 */ uart1_gate, uart2_gate, uart3_gate, usbotg_gate, wdog_gate,

    /* 75 */ max_gate, admux_gate, csi_gate, csi_div, csi_sel, iim_gate,

    /* 81 */ gpu2d_gate, ckil, clk_max

};

​

static struct clk *clk[clk_max];

​

static struct clk ** const uart_clks[] __initconst = {

    &clk[ipg],

    &clk[uart1_gate],

    &clk[uart2_gate],