arch/sh/kernel/cpu/sh4a/clock-sh7723.c - maze/linux - Git at Google

 /*
  * arch/sh/kernel/cpu/sh4a/clock-sh7723.c
  *
  * SH7723 clock framework support
  *
  * Copyright (C) 2009 Magnus Damm
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/io.h>
 #include <linux/clk.h>
 #include <linux/clkdev.h>
 #include <linux/sh_clk.h>
 #include <asm/clock.h>
 #include <cpu/sh7723.h>

 /* SH7723 registers */
 #define FRQCR		0xa4150000
 #define VCLKCR		0xa4150004
 #define SCLKACR		0xa4150008
 #define SCLKBCR		0xa415000c
 #define IRDACLKCR	0xa4150018
 #define PLLCR		0xa4150024
 #define MSTPCR0		0xa4150030
 #define MSTPCR1		0xa4150034
 #define MSTPCR2		0xa4150038
 #define DLLFRQ		0xa4150050

 /* Fixed 32 KHz root clock for RTC and Power Management purposes */
 static struct clk r_clk = {
 	.rate           = 32768,
 };

 /*
  * Default rate for the root input clock, reset this with clk_set_rate()
  * from the platform code.
  */
 struct clk extal_clk = {
 	.rate		= 33333333,
 };

 /* The dll multiplies the 32khz r_clk, may be used instead of extal */
 static unsigned long dll_recalc(struct clk *clk)
 {
 	unsigned long mult;

 	if (__raw_readl(PLLCR) & 0x1000)
 		mult = __raw_readl(DLLFRQ);
 	else
 		mult = 0;

 	return clk->parent->rate * mult;
 }

 static struct sh_clk_ops dll_clk_ops = {
 	.recalc		= dll_recalc,
 };

 static struct clk dll_clk = {
 	.ops		= &dll_clk_ops,
 	.parent		= &r_clk,
 	.flags		= CLK_ENABLE_ON_INIT,
 };

 static unsigned long pll_recalc(struct clk *clk)
 {
 	unsigned long mult = 1;
 	unsigned long div = 1;

 	if (__raw_readl(PLLCR) & 0x4000)
 		mult = (((__raw_readl(FRQCR) >> 24) & 0x1f) + 1);
 	else
 		div = 2;

 	return (clk->parent->rate * mult) / div;
 }

 static struct sh_clk_ops pll_clk_ops = {
 	.recalc		= pll_recalc,
 };

 static struct clk pll_clk = {
 	.ops		= &pll_clk_ops,
 	.flags		= CLK_ENABLE_ON_INIT,
 };

 struct clk *main_clks[] = {
 	&r_clk,
 	&extal_clk,
 	&dll_clk,
 	&pll_clk,
 };

 static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
 static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };

 static struct clk_div_mult_table div4_div_mult_table = {
 	.divisors = divisors,
 	.nr_divisors = ARRAY_SIZE(divisors),
 	.multipliers = multipliers,
 	.nr_multipliers = ARRAY_SIZE(multipliers),
 };

 static struct clk_div4_table div4_table = {
 	.div_mult_table = &div4_div_mult_table,
 };

 enum { DIV4_I, DIV4_U, DIV4_SH, DIV4_B, DIV4_B3, DIV4_P, DIV4_NR };

 #define DIV4(_reg, _bit, _mask, _flags) \
   SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags)

 struct clk div4_clks[DIV4_NR] = {
 	[DIV4_I] = DIV4(FRQCR, 20, 0x0dbf, CLK_ENABLE_ON_INIT),
 	[DIV4_U] = DIV4(FRQCR, 16, 0x0dbf, CLK_ENABLE_ON_INIT),
 	[DIV4_SH] = DIV4(FRQCR, 12, 0x0dbf, CLK_ENABLE_ON_INIT),
 	[DIV4_B] = DIV4(FRQCR, 8, 0x0dbf, CLK_ENABLE_ON_INIT),
 	[DIV4_B3] = DIV4(FRQCR, 4, 0x0db4, CLK_ENABLE_ON_INIT),
 	[DIV4_P] = DIV4(FRQCR, 0, 0x0dbf, 0),
 };

 enum { DIV4_IRDA, DIV4_ENABLE_NR };

 struct clk div4_enable_clks[DIV4_ENABLE_NR] = {
 	[DIV4_IRDA] = DIV4(IRDACLKCR, 0, 0x0dbf, 0),
 };

 enum { DIV4_SIUA, DIV4_SIUB, DIV4_REPARENT_NR };

 struct clk div4_reparent_clks[DIV4_REPARENT_NR] = {
 	[DIV4_SIUA] = DIV4(SCLKACR, 0, 0x0dbf, 0),
 	[DIV4_SIUB] = DIV4(SCLKBCR, 0, 0x0dbf, 0),
 };
 enum { DIV6_V, DIV6_NR };

 struct clk div6_clks[DIV6_NR] = {
 	[DIV6_V] = SH_CLK_DIV6(&pll_clk, VCLKCR, 0),
 };

 static struct clk mstp_clks[] = {
 	/* See page 60 of Datasheet V1.0: Overview -> Block Diagram */
 	[HWBLK_TLB]    = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 31, CLK_ENABLE_ON_INIT),
 	[HWBLK_IC]     = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 30, CLK_ENABLE_ON_INIT),
 	[HWBLK_OC]     = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 29, CLK_ENABLE_ON_INIT),
 	[HWBLK_L2C]    = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 28, CLK_ENABLE_ON_INIT),
 	[HWBLK_ILMEM]  = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 27, CLK_ENABLE_ON_INIT),
 	[HWBLK_FPU]    = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 24, CLK_ENABLE_ON_INIT),
 	[HWBLK_INTC]   = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 22, CLK_ENABLE_ON_INIT),
 	[HWBLK_DMAC0]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 21, 0),
 	[HWBLK_SHYWAY] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 20, CLK_ENABLE_ON_INIT),
 	[HWBLK_HUDI]   = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 19, 0),
 	[HWBLK_UBC]    = SH_CLK_MSTP32(&div4_clks[DIV4_I],  MSTPCR0, 17, 0),
 	[HWBLK_TMU0]   = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 15, 0),
 	[HWBLK_CMT]    = SH_CLK_MSTP32(&r_clk,		    MSTPCR0, 14, 0),
 	[HWBLK_RWDT]   = SH_CLK_MSTP32(&r_clk,		    MSTPCR0, 13, 0),
 	[HWBLK_DMAC1]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 12, 0),
 	[HWBLK_TMU1]   = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 11, 0),
 	[HWBLK_FLCTL]  = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 10, 0),
 	[HWBLK_SCIF0]  = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 9, 0),
 	[HWBLK_SCIF1]  = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 8, 0),
 	[HWBLK_SCIF2]  = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR0, 7, 0),
 	[HWBLK_SCIF3]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 6, 0),
 	[HWBLK_SCIF4]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 5, 0),
 	[HWBLK_SCIF5]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 4, 0),
 	[HWBLK_MSIOF0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 2, 0),
 	[HWBLK_MSIOF1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 1, 0),
 	[HWBLK_MERAM]  = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 0, 0),

 	[HWBLK_IIC]    = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR1, 9, 0),
 	[HWBLK_RTC]    = SH_CLK_MSTP32(&r_clk,		    MSTPCR1, 8, 0),

 	[HWBLK_ATAPI]  = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR2, 28, 0),
 	[HWBLK_ADC]    = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR2, 27, 0),
 	[HWBLK_TPU]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 25, 0),
 	[HWBLK_IRDA]   = SH_CLK_MSTP32(&div4_clks[DIV4_P],  MSTPCR2, 24, 0),
 	[HWBLK_TSIF]   = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 22, 0),
 	[HWBLK_ICB]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 21, CLK_ENABLE_ON_INIT),
 	[HWBLK_SDHI0]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 18, 0),
 	[HWBLK_SDHI1]  = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 17, 0),
 	[HWBLK_KEYSC]  = SH_CLK_MSTP32(&r_clk,		    MSTPCR2, 14, 0),
 	[HWBLK_USB]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 11, 0),
 	[HWBLK_2DG]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 10, 0),
 	[HWBLK_SIU]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 8, 0),
 	[HWBLK_VEU2H1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 6, 0),
 	[HWBLK_VOU]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 5, 0),
 	[HWBLK_BEU]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 4, 0),
 	[HWBLK_CEU]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 3, 0),
 	[HWBLK_VEU2H0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 2, 0),
 	[HWBLK_VPU]    = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 1, 0),
 	[HWBLK_LCDC]   = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR2, 0, 0),
 };

 static struct clk_lookup lookups[] = {
 	/* main clocks */
 	CLKDEV_CON_ID("rclk", &r_clk),
 	CLKDEV_CON_ID("extal", &extal_clk),
 	CLKDEV_CON_ID("dll_clk", &dll_clk),
 	CLKDEV_CON_ID("pll_clk", &pll_clk),

 	/* DIV4 clocks */
 	CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
 	CLKDEV_CON_ID("umem_clk", &div4_clks[DIV4_U]),
 	CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
 	CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
 	CLKDEV_CON_ID("b3_clk", &div4_clks[DIV4_B3]),
 	CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
 	CLKDEV_CON_ID("irda_clk", &div4_enable_clks[DIV4_IRDA]),
 	CLKDEV_CON_ID("siua_clk", &div4_reparent_clks[DIV4_SIUA]),
 	CLKDEV_CON_ID("siub_clk", &div4_reparent_clks[DIV4_SIUB]),

 	/* DIV6 clocks */
 	CLKDEV_CON_ID("video_clk", &div6_clks[DIV6_V]),

 	/* MSTP clocks */
 	CLKDEV_CON_ID("tlb0", &mstp_clks[HWBLK_TLB]),
 	CLKDEV_CON_ID("ic0", &mstp_clks[HWBLK_IC]),
 	CLKDEV_CON_ID("oc0", &mstp_clks[HWBLK_OC]),
 	CLKDEV_CON_ID("l2c0", &mstp_clks[HWBLK_L2C]),
 	CLKDEV_CON_ID("ilmem0", &mstp_clks[HWBLK_ILMEM]),
 	CLKDEV_CON_ID("fpu0", &mstp_clks[HWBLK_FPU]),
 	CLKDEV_CON_ID("intc0", &mstp_clks[HWBLK_INTC]),
 	CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[HWBLK_DMAC0]),
 	CLKDEV_CON_ID("sh0", &mstp_clks[HWBLK_SHYWAY]),
 	CLKDEV_CON_ID("hudi0", &mstp_clks[HWBLK_HUDI]),
 	CLKDEV_CON_ID("ubc0", &mstp_clks[HWBLK_UBC]),
 	CLKDEV_CON_ID("cmt_fck", &mstp_clks[HWBLK_CMT]),
 	CLKDEV_DEV_ID("sh-wdt.0", &mstp_clks[HWBLK_RWDT]),
 	CLKDEV_DEV_ID("sh-dma-engine.1", &mstp_clks[HWBLK_DMAC1]),
 	CLKDEV_CON_ID("flctl0", &mstp_clks[HWBLK_FLCTL]),
 	CLKDEV_DEV_ID("spi_sh_msiof.0", &mstp_clks[HWBLK_MSIOF0]),
 	CLKDEV_DEV_ID("spi_sh_msiof.1", &mstp_clks[HWBLK_MSIOF1]),
 	CLKDEV_DEV_ID("sh_mobile_meram.0", &mstp_clks[HWBLK_MERAM]),
 	CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[HWBLK_IIC]),
 	CLKDEV_CON_ID("rtc0", &mstp_clks[HWBLK_RTC]),
 	CLKDEV_CON_ID("atapi0", &mstp_clks[HWBLK_ATAPI]),
 	CLKDEV_CON_ID("adc0", &mstp_clks[HWBLK_ADC]),
 	CLKDEV_CON_ID("tpu0", &mstp_clks[HWBLK_TPU]),
 	CLKDEV_CON_ID("irda0", &mstp_clks[HWBLK_IRDA]),
 	CLKDEV_CON_ID("tsif0", &mstp_clks[HWBLK_TSIF]),
 	CLKDEV_CON_ID("icb0", &mstp_clks[HWBLK_ICB]),
 	CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[HWBLK_SDHI0]),
 	CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[HWBLK_SDHI1]),
 	CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[HWBLK_KEYSC]),
 	CLKDEV_CON_ID("usb0", &mstp_clks[HWBLK_USB]),
 	CLKDEV_CON_ID("2dg0", &mstp_clks[HWBLK_2DG]),
 	CLKDEV_DEV_ID("siu-pcm-audio", &mstp_clks[HWBLK_SIU]),
 	CLKDEV_CON_ID("veu1", &mstp_clks[HWBLK_VEU2H1]),
 	CLKDEV_DEV_ID("sh-vou.0", &mstp_clks[HWBLK_VOU]),
 	CLKDEV_CON_ID("beu0", &mstp_clks[HWBLK_BEU]),
 	CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[HWBLK_CEU]),
 	CLKDEV_CON_ID("veu0", &mstp_clks[HWBLK_VEU2H0]),
 	CLKDEV_CON_ID("vpu0", &mstp_clks[HWBLK_VPU]),

 	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[HWBLK_TMU0]),
 	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[HWBLK_TMU0]),
 	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.2", &mstp_clks[HWBLK_TMU0]),
 	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.3", &mstp_clks[HWBLK_TMU1]),
 	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.4", &mstp_clks[HWBLK_TMU1]),
 	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.5", &mstp_clks[HWBLK_TMU1]),

 	CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[HWBLK_SCIF0]),
 	CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[HWBLK_SCIF1]),
 	CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[HWBLK_SCIF2]),
 	CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[HWBLK_SCIF3]),
 	CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[HWBLK_SCIF4]),
 	CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[HWBLK_SCIF5]),

 	CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[HWBLK_LCDC]),
 };

 int __init arch_clk_init(void)
 {
 	int k, ret = 0;

 	/* autodetect extal or dll configuration */
 	if (__raw_readl(PLLCR) & 0x1000)
 		pll_clk.parent = &dll_clk;
 	else
 		pll_clk.parent = &extal_clk;

 	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
 		ret |= clk_register(main_clks[k]);

 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));

 	if (!ret)
 		ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);

 	if (!ret)
 		ret = sh_clk_div4_enable_register(div4_enable_clks,
 					DIV4_ENABLE_NR, &div4_table);

 	if (!ret)
 		ret = sh_clk_div4_reparent_register(div4_reparent_clks,
 					DIV4_REPARENT_NR, &div4_table);

 	if (!ret)
 		ret = sh_clk_div6_register(div6_clks, DIV6_NR);

 	if (!ret)
 		ret = sh_clk_mstp_register(mstp_clks, HWBLK_NR);

 	return ret;
 }
	/*
	* arch/sh/kernel/cpu/sh4a/clock-sh7723.c
	*
	* SH7723 clock framework support
	*
	* Copyright (C) 2009 Magnus Damm
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/io.h>
	#include <linux/clk.h>
	#include <linux/clkdev.h>
	#include <linux/sh_clk.h>
	#include <asm/clock.h>
	#include <cpu/sh7723.h>

	/* SH7723 registers */
	#define FRQCR 0xa4150000
	#define VCLKCR 0xa4150004
	#define SCLKACR 0xa4150008
	#define SCLKBCR 0xa415000c
	#define IRDACLKCR 0xa4150018
	#define PLLCR 0xa4150024
	#define MSTPCR0 0xa4150030
	#define MSTPCR1 0xa4150034
	#define MSTPCR2 0xa4150038
	#define DLLFRQ 0xa4150050

	/* Fixed 32 KHz root clock for RTC and Power Management purposes */
	static struct clk r_clk = {
	.rate = 32768,
	};

	/*
	* Default rate for the root input clock, reset this with clk_set_rate()
	* from the platform code.
	*/
	struct clk extal_clk = {
	.rate = 33333333,
	};

	/* The dll multiplies the 32khz r_clk, may be used instead of extal */
	static unsigned long dll_recalc(struct clk *clk)
	{
	unsigned long mult;

	if (__raw_readl(PLLCR) & 0x1000)
	mult = __raw_readl(DLLFRQ);
	else
	mult = 0;

	return clk->parent->rate * mult;
	}

	static struct sh_clk_ops dll_clk_ops = {
	.recalc = dll_recalc,
	};

	static struct clk dll_clk = {
	.ops = &dll_clk_ops,
	.parent = &r_clk,
	.flags = CLK_ENABLE_ON_INIT,
	};

	static unsigned long pll_recalc(struct clk *clk)
	{
	unsigned long mult = 1;
	unsigned long div = 1;

	if (__raw_readl(PLLCR) & 0x4000)
	mult = (((__raw_readl(FRQCR) >> 24) & 0x1f) + 1);
	else
	div = 2;

	return (clk->parent->rate * mult) / div;
	}

	static struct sh_clk_ops pll_clk_ops = {
	.recalc = pll_recalc,
	};

	static struct clk pll_clk = {
	.ops = &pll_clk_ops,
	.flags = CLK_ENABLE_ON_INIT,
	};

	struct clk *main_clks[] = {
	&r_clk,
	&extal_clk,
	&dll_clk,
	&pll_clk,
	};

	static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
	static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };

	static struct clk_div_mult_table div4_div_mult_table = {
	.divisors = divisors,
	.nr_divisors = ARRAY_SIZE(divisors),
	.multipliers = multipliers,
	.nr_multipliers = ARRAY_SIZE(multipliers),
	};

	static struct clk_div4_table div4_table = {
	.div_mult_table = &div4_div_mult_table,
	};

	enum { DIV4_I, DIV4_U, DIV4_SH, DIV4_B, DIV4_B3, DIV4_P, DIV4_NR };

	#define DIV4(_reg, _bit, _mask, _flags) \
	SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags)

	struct clk div4_clks[DIV4_NR] = {
	[DIV4_I] = DIV4(FRQCR, 20, 0x0dbf, CLK_ENABLE_ON_INIT),
	[DIV4_U] = DIV4(FRQCR, 16, 0x0dbf, CLK_ENABLE_ON_INIT),
	[DIV4_SH] = DIV4(FRQCR, 12, 0x0dbf, CLK_ENABLE_ON_INIT),
	[DIV4_B] = DIV4(FRQCR, 8, 0x0dbf, CLK_ENABLE_ON_INIT),
	[DIV4_B3] = DIV4(FRQCR, 4, 0x0db4, CLK_ENABLE_ON_INIT),
	[DIV4_P] = DIV4(FRQCR, 0, 0x0dbf, 0),
	};

	enum { DIV4_IRDA, DIV4_ENABLE_NR };

	struct clk div4_enable_clks[DIV4_ENABLE_NR] = {
	[DIV4_IRDA] = DIV4(IRDACLKCR, 0, 0x0dbf, 0),
	};

	enum { DIV4_SIUA, DIV4_SIUB, DIV4_REPARENT_NR };

	struct clk div4_reparent_clks[DIV4_REPARENT_NR] = {
	[DIV4_SIUA] = DIV4(SCLKACR, 0, 0x0dbf, 0),
	[DIV4_SIUB] = DIV4(SCLKBCR, 0, 0x0dbf, 0),
	};
	enum { DIV6_V, DIV6_NR };

	struct clk div6_clks[DIV6_NR] = {
	[DIV6_V] = SH_CLK_DIV6(&pll_clk, VCLKCR, 0),
	};

	static struct clk mstp_clks[] = {
	/* See page 60 of Datasheet V1.0: Overview -> Block Diagram */
	[HWBLK_TLB] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 31, CLK_ENABLE_ON_INIT),
	[HWBLK_IC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 30, CLK_ENABLE_ON_INIT),
	[HWBLK_OC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 29, CLK_ENABLE_ON_INIT),
	[HWBLK_L2C] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 28, CLK_ENABLE_ON_INIT),
	[HWBLK_ILMEM] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 27, CLK_ENABLE_ON_INIT),
	[HWBLK_FPU] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 24, CLK_ENABLE_ON_INIT),
	[HWBLK_INTC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 22, CLK_ENABLE_ON_INIT),
	[HWBLK_DMAC0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 21, 0),
	[HWBLK_SHYWAY] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 20, CLK_ENABLE_ON_INIT),
	[HWBLK_HUDI] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 19, 0),
	[HWBLK_UBC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 17, 0),
	[HWBLK_TMU0] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0),
	[HWBLK_CMT] = SH_CLK_MSTP32(&r_clk, MSTPCR0, 14, 0),
	[HWBLK_RWDT] = SH_CLK_MSTP32(&r_clk, MSTPCR0, 13, 0),
	[HWBLK_DMAC1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 12, 0),
	[HWBLK_TMU1] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 11, 0),
	[HWBLK_FLCTL] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 10, 0),
	[HWBLK_SCIF0] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0),
	[HWBLK_SCIF1] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0),
	[HWBLK_SCIF2] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 7, 0),
	[HWBLK_SCIF3] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 6, 0),
	[HWBLK_SCIF4] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 5, 0),
	[HWBLK_SCIF5] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 4, 0),
	[HWBLK_MSIOF0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 2, 0),
	[HWBLK_MSIOF1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 1, 0),
	[HWBLK_MERAM] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 0, 0),

	[HWBLK_IIC] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 9, 0),
	[HWBLK_RTC] = SH_CLK_MSTP32(&r_clk, MSTPCR1, 8, 0),

	[HWBLK_ATAPI] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR2, 28, 0),
	[HWBLK_ADC] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR2, 27, 0),
	[HWBLK_TPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 25, 0),
	[HWBLK_IRDA] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR2, 24, 0),
	[HWBLK_TSIF] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 22, 0),
	[HWBLK_ICB] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 21, CLK_ENABLE_ON_INIT),
	[HWBLK_SDHI0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 18, 0),
	[HWBLK_SDHI1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 17, 0),
	[HWBLK_KEYSC] = SH_CLK_MSTP32(&r_clk, MSTPCR2, 14, 0),
	[HWBLK_USB] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 11, 0),
	[HWBLK_2DG] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 10, 0),
	[HWBLK_SIU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 8, 0),
	[HWBLK_VEU2H1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 6, 0),
	[HWBLK_VOU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 5, 0),
	[HWBLK_BEU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 4, 0),
	[HWBLK_CEU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 3, 0),
	[HWBLK_VEU2H0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 2, 0),
	[HWBLK_VPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 1, 0),
	[HWBLK_LCDC] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 0, 0),
	};

	static struct clk_lookup lookups[] = {
	/* main clocks */
	CLKDEV_CON_ID("rclk", &r_clk),
	CLKDEV_CON_ID("extal", &extal_clk),
	CLKDEV_CON_ID("dll_clk", &dll_clk),
	CLKDEV_CON_ID("pll_clk", &pll_clk),

	/* DIV4 clocks */
	CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
	CLKDEV_CON_ID("umem_clk", &div4_clks[DIV4_U]),
	CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
	CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
	CLKDEV_CON_ID("b3_clk", &div4_clks[DIV4_B3]),
	CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
	CLKDEV_CON_ID("irda_clk", &div4_enable_clks[DIV4_IRDA]),
	CLKDEV_CON_ID("siua_clk", &div4_reparent_clks[DIV4_SIUA]),
	CLKDEV_CON_ID("siub_clk", &div4_reparent_clks[DIV4_SIUB]),

	/* DIV6 clocks */
	CLKDEV_CON_ID("video_clk", &div6_clks[DIV6_V]),

	/* MSTP clocks */
	CLKDEV_CON_ID("tlb0", &mstp_clks[HWBLK_TLB]),
	CLKDEV_CON_ID("ic0", &mstp_clks[HWBLK_IC]),
	CLKDEV_CON_ID("oc0", &mstp_clks[HWBLK_OC]),
	CLKDEV_CON_ID("l2c0", &mstp_clks[HWBLK_L2C]),
	CLKDEV_CON_ID("ilmem0", &mstp_clks[HWBLK_ILMEM]),
	CLKDEV_CON_ID("fpu0", &mstp_clks[HWBLK_FPU]),
	CLKDEV_CON_ID("intc0", &mstp_clks[HWBLK_INTC]),
	CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[HWBLK_DMAC0]),
	CLKDEV_CON_ID("sh0", &mstp_clks[HWBLK_SHYWAY]),
	CLKDEV_CON_ID("hudi0", &mstp_clks[HWBLK_HUDI]),
	CLKDEV_CON_ID("ubc0", &mstp_clks[HWBLK_UBC]),
	CLKDEV_CON_ID("cmt_fck", &mstp_clks[HWBLK_CMT]),
	CLKDEV_DEV_ID("sh-wdt.0", &mstp_clks[HWBLK_RWDT]),
	CLKDEV_DEV_ID("sh-dma-engine.1", &mstp_clks[HWBLK_DMAC1]),
	CLKDEV_CON_ID("flctl0", &mstp_clks[HWBLK_FLCTL]),
	CLKDEV_DEV_ID("spi_sh_msiof.0", &mstp_clks[HWBLK_MSIOF0]),
	CLKDEV_DEV_ID("spi_sh_msiof.1", &mstp_clks[HWBLK_MSIOF1]),
	CLKDEV_DEV_ID("sh_mobile_meram.0", &mstp_clks[HWBLK_MERAM]),
	CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[HWBLK_IIC]),
	CLKDEV_CON_ID("rtc0", &mstp_clks[HWBLK_RTC]),
	CLKDEV_CON_ID("atapi0", &mstp_clks[HWBLK_ATAPI]),
	CLKDEV_CON_ID("adc0", &mstp_clks[HWBLK_ADC]),
	CLKDEV_CON_ID("tpu0", &mstp_clks[HWBLK_TPU]),
	CLKDEV_CON_ID("irda0", &mstp_clks[HWBLK_IRDA]),
	CLKDEV_CON_ID("tsif0", &mstp_clks[HWBLK_TSIF]),
	CLKDEV_CON_ID("icb0", &mstp_clks[HWBLK_ICB]),
	CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[HWBLK_SDHI0]),
	CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[HWBLK_SDHI1]),
	CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[HWBLK_KEYSC]),
	CLKDEV_CON_ID("usb0", &mstp_clks[HWBLK_USB]),
	CLKDEV_CON_ID("2dg0", &mstp_clks[HWBLK_2DG]),
	CLKDEV_DEV_ID("siu-pcm-audio", &mstp_clks[HWBLK_SIU]),
	CLKDEV_CON_ID("veu1", &mstp_clks[HWBLK_VEU2H1]),
	CLKDEV_DEV_ID("sh-vou.0", &mstp_clks[HWBLK_VOU]),
	CLKDEV_CON_ID("beu0", &mstp_clks[HWBLK_BEU]),
	CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[HWBLK_CEU]),
	CLKDEV_CON_ID("veu0", &mstp_clks[HWBLK_VEU2H0]),
	CLKDEV_CON_ID("vpu0", &mstp_clks[HWBLK_VPU]),

	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[HWBLK_TMU0]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[HWBLK_TMU0]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.2", &mstp_clks[HWBLK_TMU0]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.3", &mstp_clks[HWBLK_TMU1]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.4", &mstp_clks[HWBLK_TMU1]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.5", &mstp_clks[HWBLK_TMU1]),

	CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[HWBLK_SCIF0]),
	CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[HWBLK_SCIF1]),
	CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[HWBLK_SCIF2]),
	CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[HWBLK_SCIF3]),
	CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[HWBLK_SCIF4]),
	CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[HWBLK_SCIF5]),

	CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[HWBLK_LCDC]),
	};

	int __init arch_clk_init(void)
	{
	int k, ret = 0;

	/* autodetect extal or dll configuration */
	if (__raw_readl(PLLCR) & 0x1000)
	pll_clk.parent = &dll_clk;
	else
	pll_clk.parent = &extal_clk;

	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
	ret \|= clk_register(main_clks[k]);

	clkdev_add_table(lookups, ARRAY_SIZE(lookups));

	if (!ret)
	ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);

	if (!ret)
	ret = sh_clk_div4_enable_register(div4_enable_clks,
	DIV4_ENABLE_NR, &div4_table);

	if (!ret)
	ret = sh_clk_div4_reparent_register(div4_reparent_clks,
	DIV4_REPARENT_NR, &div4_table);

	if (!ret)
	ret = sh_clk_div6_register(div6_clks, DIV6_NR);

	if (!ret)
	ret = sh_clk_mstp_register(mstp_clks, HWBLK_NR);

	return ret;
	}