linux-vybrid_public/arch/arm/mach-ux500/clock.c

/*
 *  Copyright (C) 2009 ST-Ericsson
 *  Copyright (C) 2009 STMicroelectronics
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>

#include <asm/clkdev.h>

#include <mach/hardware.h>
#include "clock.h"

#define PRCC_PCKEN		0x00
#define PRCC_PCKDIS		0x04
#define PRCC_KCKEN		0x08
#define PRCC_KCKDIS		0x0C

#define PRCM_YYCLKEN0_MGT_SET	0x510
#define PRCM_YYCLKEN1_MGT_SET	0x514
#define PRCM_YYCLKEN0_MGT_CLR	0x518
#define PRCM_YYCLKEN1_MGT_CLR	0x51C
#define PRCM_YYCLKEN0_MGT_VAL	0x520
#define PRCM_YYCLKEN1_MGT_VAL	0x524

#define PRCM_SVAMMDSPCLK_MGT	0x008
#define PRCM_SIAMMDSPCLK_MGT	0x00C
#define PRCM_SGACLK_MGT		0x014
#define PRCM_UARTCLK_MGT	0x018
#define PRCM_MSP02CLK_MGT	0x01C
#define PRCM_MSP1CLK_MGT	0x288
#define PRCM_I2CCLK_MGT		0x020
#define PRCM_SDMMCCLK_MGT	0x024
#define PRCM_SLIMCLK_MGT	0x028
#define PRCM_PER1CLK_MGT	0x02C
#define PRCM_PER2CLK_MGT	0x030
#define PRCM_PER3CLK_MGT	0x034
#define PRCM_PER5CLK_MGT	0x038
#define PRCM_PER6CLK_MGT	0x03C
#define PRCM_PER7CLK_MGT	0x040
#define PRCM_LCDCLK_MGT		0x044
#define PRCM_BMLCLK_MGT		0x04C
#define PRCM_HSITXCLK_MGT	0x050
#define PRCM_HSIRXCLK_MGT	0x054
#define PRCM_HDMICLK_MGT	0x058
#define PRCM_APEATCLK_MGT	0x05C
#define PRCM_APETRACECLK_MGT	0x060
#define PRCM_MCDECLK_MGT	0x064
#define PRCM_IPI2CCLK_MGT	0x068
#define PRCM_DSIALTCLK_MGT	0x06C
#define PRCM_DMACLK_MGT		0x074
#define PRCM_B2R2CLK_MGT	0x078
#define PRCM_TVCLK_MGT		0x07C
#define PRCM_UNIPROCLK_MGT	0x278
#define PRCM_SSPCLK_MGT		0x280
#define PRCM_RNGCLK_MGT		0x284
#define PRCM_UICCCLK_MGT	0x27C

#define PRCM_MGT_ENABLE		(1 << 8)

static DEFINE_SPINLOCK(clocks_lock);

static void __clk_enable(struct clk *clk)
{
	if (clk->enabled++ == 0) {
		if (clk->parent_cluster)
			__clk_enable(clk->parent_cluster);

		if (clk->parent_periph)
			__clk_enable(clk->parent_periph);

		if (clk->ops && clk->ops->enable)
			clk->ops->enable(clk);
	}
}

int clk_enable(struct clk *clk)
{
	unsigned long flags;

	spin_lock_irqsave(&clocks_lock, flags);
	__clk_enable(clk);
	spin_unlock_irqrestore(&clocks_lock, flags);

	return 0;
}
EXPORT_SYMBOL(clk_enable);

static void __clk_disable(struct clk *clk)
{
	if (--clk->enabled == 0) {
		if (clk->ops && clk->ops->disable)
			clk->ops->disable(clk);

		if (clk->parent_periph)
			__clk_disable(clk->parent_periph);

		if (clk->parent_cluster)
			__clk_disable(clk->parent_cluster);
	}
}

void clk_disable(struct clk *clk)
{
	unsigned long flags;

	WARN_ON(!clk->enabled);

	spin_lock_irqsave(&clocks_lock, flags);
	__clk_disable(clk);
	spin_unlock_irqrestore(&clocks_lock, flags);
}
EXPORT_SYMBOL(clk_disable);

unsigned long clk_get_rate(struct clk *clk)
{
	unsigned long rate;

	if (clk->ops && clk->ops->get_rate)
		return clk->ops->get_rate(clk);

	rate = clk->rate;
	if (!rate) {
		if (clk->parent_periph)
			rate = clk_get_rate(clk->parent_periph);
		else if (clk->parent_cluster)
			rate = clk_get_rate(clk->parent_cluster);
	}

	return rate;
}
EXPORT_SYMBOL(clk_get_rate);

long clk_round_rate(struct clk *clk, unsigned long rate)
{
	/*TODO*/
	return rate;
}
EXPORT_SYMBOL(clk_round_rate);

int clk_set_rate(struct clk *clk, unsigned long rate)
{
	clk->rate = rate;
	return 0;
}
EXPORT_SYMBOL(clk_set_rate);

static void clk_prcmu_enable(struct clk *clk)
{
	void __iomem *cg_set_reg = __io_address(U8500_PRCMU_BASE)
				   + PRCM_YYCLKEN0_MGT_SET + clk->prcmu_cg_off;

	writel(1 << clk->prcmu_cg_bit, cg_set_reg);
}

static void clk_prcmu_disable(struct clk *clk)
{
	void __iomem *cg_clr_reg = __io_address(U8500_PRCMU_BASE)
				   + PRCM_YYCLKEN0_MGT_CLR + clk->prcmu_cg_off;

	writel(1 << clk->prcmu_cg_bit, cg_clr_reg);
}

/* ED doesn't have the combined set/clr registers */
static void clk_prcmu_ed_enable(struct clk *clk)
{
	void __iomem *addr = __io_address(U8500_PRCMU_BASE)
			     + clk->prcmu_cg_mgt;

	writel(readl(addr) | PRCM_MGT_ENABLE, addr);
}

static void clk_prcmu_ed_disable(struct clk *clk)
{
	void __iomem *addr = __io_address(U8500_PRCMU_BASE)
			     + clk->prcmu_cg_mgt;

	writel(readl(addr) & ~PRCM_MGT_ENABLE, addr);
}

static struct clkops clk_prcmu_ops = {
	.enable = clk_prcmu_enable,
	.disable = clk_prcmu_disable,
};

static unsigned int clkrst_base[] = {
	[1] = U8500_CLKRST1_BASE,
	[2] = U8500_CLKRST2_BASE,
	[3] = U8500_CLKRST3_BASE,
	[5] = U8500_CLKRST5_BASE,
	[6] = U8500_CLKRST6_BASE,
	[7] = U8500_CLKRST7_BASE_ED,
};

static void clk_prcc_enable(struct clk *clk)
{
	void __iomem *addr = __io_address(clkrst_base[clk->cluster]);

	if (clk->prcc_kernel != -1)
		writel(1 << clk->prcc_kernel, addr + PRCC_KCKEN);

	if (clk->prcc_bus != -1)
		writel(1 << clk->prcc_bus, addr + PRCC_PCKEN);
}

static void clk_prcc_disable(struct clk *clk)
{
	void __iomem *addr = __io_address(clkrst_base[clk->cluster]);

	if (clk->prcc_bus != -1)
		writel(1 << clk->prcc_bus, addr + PRCC_PCKDIS);

	if (clk->prcc_kernel != -1)
		writel(1 << clk->prcc_kernel, addr + PRCC_KCKDIS);
}

static struct clkops clk_prcc_ops = {
	.enable = clk_prcc_enable,
	.disable = clk_prcc_disable,
};

static struct clk clk_32khz = {
	.rate = 32000,
};

/*
 * PRCMU level clock gating
 */

/* Bank 0 */
static DEFINE_PRCMU_CLK(svaclk,		0x0, 2, SVAMMDSPCLK);
static DEFINE_PRCMU_CLK(siaclk,		0x0, 3, SIAMMDSPCLK);
static DEFINE_PRCMU_CLK(sgaclk,		0x0, 4, SGACLK);
static DEFINE_PRCMU_CLK_RATE(uartclk,	0x0, 5, UARTCLK, 38400000);
static DEFINE_PRCMU_CLK(msp02clk,	0x0, 6, MSP02CLK);
static DEFINE_PRCMU_CLK(msp1clk,	0x0, 7, MSP1CLK); /* v1 */
static DEFINE_PRCMU_CLK_RATE(i2cclk,	0x0, 8, I2CCLK, 48000000);
static DEFINE_PRCMU_CLK_RATE(sdmmcclk,	0x0, 9, SDMMCCLK, 50000000);
static DEFINE_PRCMU_CLK(slimclk,	0x0, 10, SLIMCLK);
static DEFINE_PRCMU_CLK(per1clk,	0x0, 11, PER1CLK);
static DEFINE_PRCMU_CLK(per2clk,	0x0, 12, PER2CLK);
static DEFINE_PRCMU_CLK(per3clk,	0x0, 13, PER3CLK);
static DEFINE_PRCMU_CLK(per5clk,	0x0, 14, PER5CLK);
static DEFINE_PRCMU_CLK_RATE(per6clk,	0x0, 15, PER6CLK, 133330000);
static DEFINE_PRCMU_CLK_RATE(per7clk,	0x0, 16, PER7CLK, 100000000);
static DEFINE_PRCMU_CLK(lcdclk,		0x0, 17, LCDCLK);
static DEFINE_PRCMU_CLK(bmlclk,		0x0, 18, BMLCLK);
static DEFINE_PRCMU_CLK(hsitxclk,	0x0, 19, HSITXCLK);
static DEFINE_PRCMU_CLK(hsirxclk,	0x0, 20, HSIRXCLK);
static DEFINE_PRCMU_CLK(hdmiclk,	0x0, 21, HDMICLK);
static DEFINE_PRCMU_CLK(apeatclk,	0x0, 22, APEATCLK);
static DEFINE_PRCMU_CLK(apetraceclk,	0x0, 23, APETRACECLK);
static DEFINE_PRCMU_CLK(mcdeclk,	0x0, 24, MCDECLK);
static DEFINE_PRCMU_CLK(ipi2clk,	0x0, 25, IPI2CCLK);
static DEFINE_PRCMU_CLK(dsialtclk,	0x0, 26, DSIALTCLK); /* v1 */
static DEFINE_PRCMU_CLK(dmaclk,		0x0, 27, DMACLK);
static DEFINE_PRCMU_CLK(b2r2clk,	0x0, 28, B2R2CLK);
static DEFINE_PRCMU_CLK(tvclk,		0x0, 29, TVCLK);
static DEFINE_PRCMU_CLK(uniproclk,	0x0, 30, UNIPROCLK); /* v1 */
static DEFINE_PRCMU_CLK_RATE(sspclk,	0x0, 31, SSPCLK, 48000000); /* v1 */

/* Bank 1 */
static DEFINE_PRCMU_CLK(rngclk,		0x4, 0, RNGCLK); /* v1 */
static DEFINE_PRCMU_CLK(uiccclk,	0x4, 1, UICCCLK); /* v1 */

/*
 * PRCC level clock gating
 * Format: per#, clk, PCKEN bit, KCKEN bit, parent
 */

/* Peripheral Cluster #1 */
static DEFINE_PRCC_CLK(1, i2c4, 	10, 9, &clk_i2cclk);
static DEFINE_PRCC_CLK(1, gpio0,	9, -1, NULL);
static DEFINE_PRCC_CLK(1, slimbus0, 	8,  8, &clk_slimclk);
static DEFINE_PRCC_CLK(1, spi3_ed, 	7,  7, NULL);
static DEFINE_PRCC_CLK(1, spi3_v1, 	7, -1, NULL);
static DEFINE_PRCC_CLK(1, i2c2, 	6,  6, &clk_i2cclk);
static DEFINE_PRCC_CLK(1, sdi0,		5,  5, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(1, msp1_ed, 	4,  4, &clk_msp02clk);
static DEFINE_PRCC_CLK(1, msp1_v1, 	4,  4, &clk_msp1clk);
static DEFINE_PRCC_CLK(1, msp0, 	3,  3, &clk_msp02clk);
static DEFINE_PRCC_CLK(1, i2c1, 	2,  2, &clk_i2cclk);
static DEFINE_PRCC_CLK(1, uart1, 	1,  1, &clk_uartclk);
static DEFINE_PRCC_CLK(1, uart0, 	0,  0, &clk_uartclk);

/* Peripheral Cluster #2 */

static DEFINE_PRCC_CLK(2, gpio1_ed,	12, -1, NULL);
static DEFINE_PRCC_CLK(2, ssitx_ed, 	11, -1, NULL);
static DEFINE_PRCC_CLK(2, ssirx_ed, 	10, -1, NULL);
static DEFINE_PRCC_CLK(2, spi0_ed, 	 9, -1, NULL);
static DEFINE_PRCC_CLK(2, sdi3_ed, 	 8,  6, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(2, sdi1_ed, 	 7,  5, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(2, msp2_ed, 	 6,  4, &clk_msp02clk);
static DEFINE_PRCC_CLK(2, sdi4_ed, 	 4,  2, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(2, pwl_ed,	 3,  1, NULL);
static DEFINE_PRCC_CLK(2, spi1_ed, 	 2, -1, NULL);
static DEFINE_PRCC_CLK(2, spi2_ed, 	 1, -1, NULL);
static DEFINE_PRCC_CLK(2, i2c3_ed, 	 0,  0, &clk_i2cclk);

static DEFINE_PRCC_CLK(2, gpio1_v1,	11, -1, NULL);
static DEFINE_PRCC_CLK(2, ssitx_v1, 	10,  7, NULL);
static DEFINE_PRCC_CLK(2, ssirx_v1, 	 9,  6, NULL);
static DEFINE_PRCC_CLK(2, spi0_v1, 	 8, -1, NULL);
static DEFINE_PRCC_CLK(2, sdi3_v1, 	 7,  5, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(2, sdi1_v1, 	 6,  4, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(2, msp2_v1, 	 5,  3, &clk_msp02clk);
static DEFINE_PRCC_CLK(2, sdi4_v1, 	 4,  2, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(2, pwl_v1,	 3,  1, NULL);
static DEFINE_PRCC_CLK(2, spi1_v1, 	 2, -1, NULL);
static DEFINE_PRCC_CLK(2, spi2_v1, 	 1, -1, NULL);
static DEFINE_PRCC_CLK(2, i2c3_v1, 	 0,  0, &clk_i2cclk);

/* Peripheral Cluster #3 */
static DEFINE_PRCC_CLK(3, gpio2, 	8, -1, NULL);
static DEFINE_PRCC_CLK(3, sdi5, 	7,  7, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(3, uart2, 	6,  6, &clk_uartclk);
static DEFINE_PRCC_CLK(3, ske, 		5,  5, &clk_32khz);
static DEFINE_PRCC_CLK(3, sdi2, 	4,  4, &clk_sdmmcclk);
static DEFINE_PRCC_CLK(3, i2c0, 	3,  3, &clk_i2cclk);
static DEFINE_PRCC_CLK(3, ssp1_ed, 	2,  2, &clk_i2cclk);
static DEFINE_PRCC_CLK(3, ssp0_ed, 	1,  1, &clk_i2cclk);
static DEFINE_PRCC_CLK(3, ssp1_v1, 	2,  2, &clk_sspclk);
static DEFINE_PRCC_CLK(3, ssp0_v1, 	1,  1, &clk_sspclk);
static DEFINE_PRCC_CLK(3, fsmc, 	0, -1, NULL);

/* Peripheral Cluster #4 is in the always on domain */

/* Peripheral Cluster #5 */
static DEFINE_PRCC_CLK(5, gpio3, 	1, -1, NULL);
static DEFINE_PRCC_CLK(5, usb_ed, 	0,  0, &clk_i2cclk);
static DEFINE_PRCC_CLK(5, usb_v1, 	0,  0, NULL);

/* Peripheral Cluster #6 */

static DEFINE_PRCC_CLK(6, mtu1_v1, 	8, -1, NULL);
static DEFINE_PRCC_CLK(6, mtu0_v1, 	7, -1, NULL);
static DEFINE_PRCC_CLK(6, cfgreg_v1, 	6,  6, NULL);
static DEFINE_PRCC_CLK(6, dmc_ed, 	6,  6, NULL);
static DEFINE_PRCC_CLK(6, hash1, 	5, -1, NULL);
static DEFINE_PRCC_CLK(6, unipro_v1, 	4,  1, &clk_uniproclk);
static DEFINE_PRCC_CLK(6, cryp1_ed, 	4, -1, NULL);
static DEFINE_PRCC_CLK(6, pka, 		3, -1, NULL);
static DEFINE_PRCC_CLK(6, hash0, 	2, -1, NULL);
static DEFINE_PRCC_CLK(6, cryp0, 	1, -1, NULL);
static DEFINE_PRCC_CLK(6, rng_ed, 	0,  0, &clk_i2cclk);
static DEFINE_PRCC_CLK(6, rng_v1, 	0,  0, &clk_rngclk);

/* Peripheral Cluster #7 */

static DEFINE_PRCC_CLK(7, tzpc0_ed, 	4, -1, NULL);
static DEFINE_PRCC_CLK(7, mtu1_ed, 	3, -1, NULL);
static DEFINE_PRCC_CLK(7, mtu0_ed, 	2, -1, NULL);
static DEFINE_PRCC_CLK(7, wdg_ed, 	1, -1, NULL);
static DEFINE_PRCC_CLK(7, cfgreg_ed, 	0, -1, NULL);

static struct clk_lookup u8500_common_clks[] = {
	/* Peripheral Cluster #1 */
	CLK(gpio0,	"gpio.0",	NULL),
	CLK(gpio0,	"gpio.1",	NULL),
	CLK(slimbus0,	"slimbus0",	NULL),
	CLK(i2c2,	"nmk-i2c.2",	NULL),
	CLK(sdi0,	"sdi0",		NULL),
	CLK(msp0,	"msp0",		NULL),
	CLK(i2c1,	"nmk-i2c.1",	NULL),
	CLK(uart1,	"uart1",	NULL),
	CLK(uart0,	"uart0",	NULL),

	/* Peripheral Cluster #3 */
	CLK(gpio2,	"gpio.2",	NULL),
	CLK(gpio2,	"gpio.3",	NULL),
	CLK(gpio2,	"gpio.4",	NULL),
	CLK(gpio2,	"gpio.5",	NULL),
	CLK(sdi5,	"sdi5",		NULL),
	CLK(uart2,	"uart2",	NULL),
	CLK(ske,	"ske",		NULL),
	CLK(sdi2,	"sdi2",		NULL),
	CLK(i2c0,	"nmk-i2c.0",	NULL),
	CLK(fsmc,	"fsmc",		NULL),

	/* Peripheral Cluster #5 */
	CLK(gpio3,	"gpio.8",	NULL),

	/* Peripheral Cluster #6 */
	CLK(hash1,	"hash1",	NULL),
	CLK(pka,	"pka",		NULL),
	CLK(hash0,	"hash0",	NULL),
	CLK(cryp0,	"cryp0",	NULL),

	/* PRCMU level clock gating */

	/* Bank 0 */
	CLK(svaclk,	"sva",		NULL),
	CLK(siaclk,	"sia",		NULL),
	CLK(sgaclk,	"sga",		NULL),
	CLK(slimclk,	"slim",		NULL),
	CLK(lcdclk,	"lcd",		NULL),
	CLK(bmlclk,	"bml",		NULL),
	CLK(hsitxclk,	"stm-hsi.0",	NULL),
	CLK(hsirxclk,	"stm-hsi.1",	NULL),
	CLK(hdmiclk,	"hdmi",		NULL),
	CLK(apeatclk,	"apeat",	NULL),
	CLK(apetraceclk,	"apetrace",	NULL),
	CLK(mcdeclk,	"mcde",		NULL),
	CLK(ipi2clk,	"ipi2",		NULL),
	CLK(dmaclk,	"dma40",	NULL),
	CLK(b2r2clk,	"b2r2",		NULL),
	CLK(tvclk,	"tv",		NULL),
};

static struct clk_lookup u8500_ed_clks[] = {
	/* Peripheral Cluster #1 */
	CLK(spi3_ed,	"spi3",		NULL),
	CLK(msp1_ed,	"msp1",		NULL),

	/* Peripheral Cluster #2 */
	CLK(gpio1_ed,	"gpio.6",	NULL),
	CLK(gpio1_ed,	"gpio.7",	NULL),
	CLK(ssitx_ed,	"ssitx",	NULL),
	CLK(ssirx_ed,	"ssirx",	NULL),
	CLK(spi0_ed,	"spi0",		NULL),
	CLK(sdi3_ed,	"sdi3",		NULL),
	CLK(sdi1_ed,	"sdi1",		NULL),
	CLK(msp2_ed,	"msp2",		NULL),
	CLK(sdi4_ed,	"sdi4",		NULL),
	CLK(pwl_ed,	"pwl",		NULL),
	CLK(spi1_ed,	"spi1",		NULL),
	CLK(spi2_ed,	"spi2",		NULL),
	CLK(i2c3_ed,	"nmk-i2c.3",	NULL),

	/* Peripheral Cluster #3 */
	CLK(ssp1_ed,	"ssp1",		NULL),
	CLK(ssp0_ed,	"ssp0",		NULL),

	/* Peripheral Cluster #5 */
	CLK(usb_ed,	"musb_hdrc.0",	"usb"),

	/* Peripheral Cluster #6 */
	CLK(dmc_ed,	"dmc",		NULL),
	CLK(cryp1_ed,	"cryp1",	NULL),
	CLK(rng_ed,	"rng",		NULL),

	/* Peripheral Cluster #7 */
	CLK(tzpc0_ed,	"tzpc0",	NULL),
	CLK(mtu1_ed,	"mtu1",		NULL),
	CLK(mtu0_ed,	"mtu0",		NULL),
	CLK(wdg_ed,	"wdg",		NULL),
	CLK(cfgreg_ed,	"cfgreg",	NULL),
};

static struct clk_lookup u8500_v1_clks[] = {
	/* Peripheral Cluster #1 */
	CLK(i2c4,	"nmk-i2c.4", 	NULL),
	CLK(spi3_v1,	"spi3",		NULL),
	CLK(msp1_v1,	"msp1",		NULL),

	/* Peripheral Cluster #2 */
	CLK(gpio1_v1,	"gpio.6",	NULL),
	CLK(gpio1_v1,	"gpio.7",	NULL),
	CLK(ssitx_v1,	"ssitx",	NULL),
	CLK(ssirx_v1,	"ssirx",	NULL),
	CLK(spi0_v1,	"spi0",		NULL),
	CLK(sdi3_v1,	"sdi3",		NULL),
	CLK(sdi1_v1,	"sdi1",		NULL),
	CLK(msp2_v1,	"msp2",		NULL),
	CLK(sdi4_v1,	"sdi4",		NULL),
	CLK(pwl_v1,	"pwl",		NULL),
	CLK(spi1_v1,	"spi1",		NULL),
	CLK(spi2_v1,	"spi2",		NULL),
	CLK(i2c3_v1,	"nmk-i2c.3",	NULL),

	/* Peripheral Cluster #3 */
	CLK(ssp1_v1,	"ssp1",		NULL),
	CLK(ssp0_v1,	"ssp0",		NULL),

	/* Peripheral Cluster #5 */
	CLK(usb_v1,	"musb_hdrc.0",	"usb"),

	/* Peripheral Cluster #6 */
	CLK(mtu1_v1,	"mtu1",		NULL),
	CLK(mtu0_v1,	"mtu0",		NULL),
	CLK(cfgreg_v1,	"cfgreg",	NULL),
	CLK(hash1,	"hash1",	NULL),
	CLK(unipro_v1,	"unipro",	NULL),
	CLK(rng_v1,	"rng",		NULL),

	/* PRCMU level clock gating */

	/* Bank 0 */
	CLK(uniproclk,	"uniproclk",	NULL),
	CLK(dsialtclk,	"dsialt",	NULL),

	/* Bank 1 */
	CLK(rngclk,	"rng",		NULL),
	CLK(uiccclk,	"uicc",		NULL),
};

static int __init clk_init(void)
{
	if (cpu_is_u8500ed()) {
		clk_prcmu_ops.enable = clk_prcmu_ed_enable;
		clk_prcmu_ops.disable = clk_prcmu_ed_disable;
	} else if (cpu_is_u5500()) {
		/* Clock tree for U5500 not implemented yet */
		clk_prcc_ops.enable = clk_prcc_ops.disable = NULL;
		clk_prcmu_ops.enable = clk_prcmu_ops.disable = NULL;
	}

	clkdev_add_table(u8500_common_clks, ARRAY_SIZE(u8500_common_clks));
	if (cpu_is_u8500ed())
		clkdev_add_table(u8500_ed_clks, ARRAY_SIZE(u8500_ed_clks));
	else
		clkdev_add_table(u8500_v1_clks, ARRAY_SIZE(u8500_v1_clks));

	return 0;
}
arch_initcall(clk_init);