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 <asm/clock.h>
 #include <asm/hwblk.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 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 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 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 */
 	SH_HWBLK_CLK(HWBLK_TLB, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_IC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_OC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_L2C, &div4_clks[DIV4_SH], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_ILMEM, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_FPU, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_INTC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_DMAC0, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_SHYWAY, &div4_clks[DIV4_SH], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_HUDI, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_UBC, &div4_clks[DIV4_I], 0),
 	SH_HWBLK_CLK(HWBLK_TMU0, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_CMT, &r_clk, 0),
 	SH_HWBLK_CLK(HWBLK_RWDT, &r_clk, 0),
 	SH_HWBLK_CLK(HWBLK_DMAC1, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_TMU1, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_FLCTL, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_SCIF0, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_SCIF1, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_SCIF2, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_SCIF3, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_SCIF4, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_SCIF5, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_MSIOF0, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_MSIOF1, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_MERAM, &div4_clks[DIV4_SH], 0),

 	SH_HWBLK_CLK(HWBLK_IIC, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_RTC, &r_clk, 0),

 	SH_HWBLK_CLK(HWBLK_ATAPI, &div4_clks[DIV4_SH], 0),
 	SH_HWBLK_CLK(HWBLK_ADC, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_TPU, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_IRDA, &div4_clks[DIV4_P], 0),
 	SH_HWBLK_CLK(HWBLK_TSIF, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_ICB, &div4_clks[DIV4_B], CLK_ENABLE_ON_INIT),
 	SH_HWBLK_CLK(HWBLK_SDHI0, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_SDHI1, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_KEYSC, &r_clk, 0),
 	SH_HWBLK_CLK(HWBLK_USB, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_2DG, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_SIU, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_VEU2H1, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_VOU, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_BEU, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_CEU, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_VEU2H0, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_VPU, &div4_clks[DIV4_B], 0),
 	SH_HWBLK_CLK(HWBLK_LCDC, &div4_clks[DIV4_B], 0),
 };

 #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }

 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_CON_ID("dmac0", &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]),
 	{
 		/* TMU0 */
 		.dev_id		= "sh_tmu.0",
 		.con_id		= "tmu_fck",
 		.clk		= &mstp_clks[HWBLK_TMU0],
 	}, {
 		/* TMU1 */
 		.dev_id		= "sh_tmu.1",
 		.con_id		= "tmu_fck",
 		.clk		= &mstp_clks[HWBLK_TMU0],
 	}, {
 		/* TMU2 */
 		.dev_id		= "sh_tmu.2",
 		.con_id		= "tmu_fck",
 		.clk		= &mstp_clks[HWBLK_TMU0],
 	},
 	CLKDEV_CON_ID("cmt_fck", &mstp_clks[HWBLK_CMT]),
 	CLKDEV_CON_ID("rwdt0", &mstp_clks[HWBLK_RWDT]),
 	CLKDEV_CON_ID("dmac1", &mstp_clks[HWBLK_DMAC1]),
 	{
 		/* TMU3 */
 		.dev_id		= "sh_tmu.3",
 		.con_id		= "tmu_fck",
 		.clk		= &mstp_clks[HWBLK_TMU1],
 	}, {
 		/* TMU4 */
 		.dev_id		= "sh_tmu.4",
 		.con_id		= "tmu_fck",
 		.clk		= &mstp_clks[HWBLK_TMU1],
 	}, {
 		/* TMU5 */
 		.dev_id		= "sh_tmu.5",
 		.con_id		= "tmu_fck",
 		.clk		= &mstp_clks[HWBLK_TMU1],
 	},
 	CLKDEV_CON_ID("flctl0", &mstp_clks[HWBLK_FLCTL]),
 	{
 		/* SCIF0 */
 		.dev_id		= "sh-sci.0",
 		.con_id		= "sci_fck",
 		.clk		= &mstp_clks[HWBLK_SCIF0],
 	}, {
 		/* SCIF1 */
 		.dev_id		= "sh-sci.1",
 		.con_id		= "sci_fck",
 		.clk		= &mstp_clks[HWBLK_SCIF1],
 	}, {
 		/* SCIF2 */
 		.dev_id		= "sh-sci.2",
 		.con_id		= "sci_fck",
 		.clk		= &mstp_clks[HWBLK_SCIF2],
 	}, {
 		/* SCIF3 */
 		.dev_id		= "sh-sci.3",
 		.con_id		= "sci_fck",
 		.clk		= &mstp_clks[HWBLK_SCIF3],
 	}, {
 		/* SCIF4 */
 		.dev_id		= "sh-sci.4",
 		.con_id		= "sci_fck",
 		.clk		= &mstp_clks[HWBLK_SCIF4],
 	}, {
 		/* SCIF5 */
 		.dev_id		= "sh-sci.5",
 		.con_id		= "sci_fck",
 		.clk		= &mstp_clks[HWBLK_SCIF5],
 	},
 	CLKDEV_CON_ID("msiof0", &mstp_clks[HWBLK_MSIOF0]),
 	CLKDEV_CON_ID("msiof1", &mstp_clks[HWBLK_MSIOF1]),
 	CLKDEV_CON_ID("meram0", &mstp_clks[HWBLK_MERAM]),
 	CLKDEV_CON_ID("i2c0", &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_CON_ID("sdhi0", &mstp_clks[HWBLK_SDHI0]),
 	CLKDEV_CON_ID("sdhi1", &mstp_clks[HWBLK_SDHI1]),
 	CLKDEV_CON_ID("keysc0", &mstp_clks[HWBLK_KEYSC]),
 	CLKDEV_CON_ID("usb0", &mstp_clks[HWBLK_USB]),
 	CLKDEV_CON_ID("2dg0", &mstp_clks[HWBLK_2DG]),
 	CLKDEV_CON_ID("siu0", &mstp_clks[HWBLK_SIU]),
 	CLKDEV_CON_ID("veu1", &mstp_clks[HWBLK_VEU2H1]),
 	CLKDEV_CON_ID("vou0", &mstp_clks[HWBLK_VOU]),
 	CLKDEV_CON_ID("beu0", &mstp_clks[HWBLK_BEU]),
 	CLKDEV_CON_ID("ceu0", &mstp_clks[HWBLK_CEU]),
 	CLKDEV_CON_ID("veu0", &mstp_clks[HWBLK_VEU2H0]),
 	CLKDEV_CON_ID("vpu0", &mstp_clks[HWBLK_VPU]),
 	CLKDEV_CON_ID("lcdc0", &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_hwblk_clk_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 <asm/clock.h>
	#include <asm/hwblk.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 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 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 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 */
	SH_HWBLK_CLK(HWBLK_TLB, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_IC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_OC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_L2C, &div4_clks[DIV4_SH], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_ILMEM, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_FPU, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_INTC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_DMAC0, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_SHYWAY, &div4_clks[DIV4_SH], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_HUDI, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_UBC, &div4_clks[DIV4_I], 0),
	SH_HWBLK_CLK(HWBLK_TMU0, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_CMT, &r_clk, 0),
	SH_HWBLK_CLK(HWBLK_RWDT, &r_clk, 0),
	SH_HWBLK_CLK(HWBLK_DMAC1, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_TMU1, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_FLCTL, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_SCIF0, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_SCIF1, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_SCIF2, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_SCIF3, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_SCIF4, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_SCIF5, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_MSIOF0, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_MSIOF1, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_MERAM, &div4_clks[DIV4_SH], 0),

	SH_HWBLK_CLK(HWBLK_IIC, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_RTC, &r_clk, 0),

	SH_HWBLK_CLK(HWBLK_ATAPI, &div4_clks[DIV4_SH], 0),
	SH_HWBLK_CLK(HWBLK_ADC, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_TPU, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_IRDA, &div4_clks[DIV4_P], 0),
	SH_HWBLK_CLK(HWBLK_TSIF, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_ICB, &div4_clks[DIV4_B], CLK_ENABLE_ON_INIT),
	SH_HWBLK_CLK(HWBLK_SDHI0, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_SDHI1, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_KEYSC, &r_clk, 0),
	SH_HWBLK_CLK(HWBLK_USB, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_2DG, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_SIU, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_VEU2H1, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_VOU, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_BEU, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_CEU, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_VEU2H0, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_VPU, &div4_clks[DIV4_B], 0),
	SH_HWBLK_CLK(HWBLK_LCDC, &div4_clks[DIV4_B], 0),
	};

	#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }

	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_CON_ID("dmac0", &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]),
	{
	/* TMU0 */
	.dev_id = "sh_tmu.0",
	.con_id = "tmu_fck",
	.clk = &mstp_clks[HWBLK_TMU0],
	}, {
	/* TMU1 */
	.dev_id = "sh_tmu.1",
	.con_id = "tmu_fck",
	.clk = &mstp_clks[HWBLK_TMU0],
	}, {
	/* TMU2 */
	.dev_id = "sh_tmu.2",
	.con_id = "tmu_fck",
	.clk = &mstp_clks[HWBLK_TMU0],
	},
	CLKDEV_CON_ID("cmt_fck", &mstp_clks[HWBLK_CMT]),
	CLKDEV_CON_ID("rwdt0", &mstp_clks[HWBLK_RWDT]),
	CLKDEV_CON_ID("dmac1", &mstp_clks[HWBLK_DMAC1]),
	{
	/* TMU3 */
	.dev_id = "sh_tmu.3",
	.con_id = "tmu_fck",
	.clk = &mstp_clks[HWBLK_TMU1],
	}, {
	/* TMU4 */
	.dev_id = "sh_tmu.4",
	.con_id = "tmu_fck",
	.clk = &mstp_clks[HWBLK_TMU1],
	}, {
	/* TMU5 */
	.dev_id = "sh_tmu.5",
	.con_id = "tmu_fck",
	.clk = &mstp_clks[HWBLK_TMU1],
	},
	CLKDEV_CON_ID("flctl0", &mstp_clks[HWBLK_FLCTL]),
	{
	/* SCIF0 */
	.dev_id = "sh-sci.0",
	.con_id = "sci_fck",
	.clk = &mstp_clks[HWBLK_SCIF0],
	}, {
	/* SCIF1 */
	.dev_id = "sh-sci.1",
	.con_id = "sci_fck",
	.clk = &mstp_clks[HWBLK_SCIF1],
	}, {
	/* SCIF2 */
	.dev_id = "sh-sci.2",
	.con_id = "sci_fck",
	.clk = &mstp_clks[HWBLK_SCIF2],
	}, {
	/* SCIF3 */
	.dev_id = "sh-sci.3",
	.con_id = "sci_fck",
	.clk = &mstp_clks[HWBLK_SCIF3],
	}, {
	/* SCIF4 */
	.dev_id = "sh-sci.4",
	.con_id = "sci_fck",
	.clk = &mstp_clks[HWBLK_SCIF4],
	}, {
	/* SCIF5 */
	.dev_id = "sh-sci.5",
	.con_id = "sci_fck",
	.clk = &mstp_clks[HWBLK_SCIF5],
	},
	CLKDEV_CON_ID("msiof0", &mstp_clks[HWBLK_MSIOF0]),
	CLKDEV_CON_ID("msiof1", &mstp_clks[HWBLK_MSIOF1]),
	CLKDEV_CON_ID("meram0", &mstp_clks[HWBLK_MERAM]),
	CLKDEV_CON_ID("i2c0", &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_CON_ID("sdhi0", &mstp_clks[HWBLK_SDHI0]),
	CLKDEV_CON_ID("sdhi1", &mstp_clks[HWBLK_SDHI1]),
	CLKDEV_CON_ID("keysc0", &mstp_clks[HWBLK_KEYSC]),
	CLKDEV_CON_ID("usb0", &mstp_clks[HWBLK_USB]),
	CLKDEV_CON_ID("2dg0", &mstp_clks[HWBLK_2DG]),
	CLKDEV_CON_ID("siu0", &mstp_clks[HWBLK_SIU]),
	CLKDEV_CON_ID("veu1", &mstp_clks[HWBLK_VEU2H1]),
	CLKDEV_CON_ID("vou0", &mstp_clks[HWBLK_VOU]),
	CLKDEV_CON_ID("beu0", &mstp_clks[HWBLK_BEU]),
	CLKDEV_CON_ID("ceu0", &mstp_clks[HWBLK_CEU]),
	CLKDEV_CON_ID("veu0", &mstp_clks[HWBLK_VEU2H0]),
	CLKDEV_CON_ID("vpu0", &mstp_clks[HWBLK_VPU]),
	CLKDEV_CON_ID("lcdc0", &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_hwblk_clk_register(mstp_clks, HWBLK_NR);

	return ret;
	}