[people/ms/u-boot.git] / cpu / mpc85xx / speed.c

/*
 * Copyright 2004, 2007-2009 Freescale Semiconductor, Inc.
 *
 * (C) Copyright 2003 Motorola Inc.
 * Xianghua Xiao, (X.Xiao@motorola.com)
 *
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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, or (at your option) any later version.
 *
 * 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 <common.h>
#include <ppc_asm.tmpl>
#include <asm/processor.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

/* --------------------------------------------------------------- */

void get_sys_info (sys_info_t * sysInfo)
{
	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#ifdef CONFIG_FSL_CORENET
	volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);

	const u8 core_cplx_PLL[16] = {
		[ 0] = 0,	/* CC1 PPL / 1 */
		[ 1] = 0,	/* CC1 PPL / 2 */
		[ 2] = 0,	/* CC1 PPL / 4 */
		[ 4] = 1,	/* CC2 PPL / 1 */
		[ 5] = 1,	/* CC2 PPL / 2 */
		[ 6] = 1,	/* CC2 PPL / 4 */
		[ 8] = 2,	/* CC3 PPL / 1 */
		[ 9] = 2,	/* CC3 PPL / 2 */
		[10] = 2,	/* CC3 PPL / 4 */
		[12] = 3,	/* CC4 PPL / 1 */
		[13] = 3,	/* CC4 PPL / 2 */
		[14] = 3,	/* CC4 PPL / 4 */
	};

	const u8 core_cplx_PLL_div[16] = {
		[ 0] = 1,	/* CC1 PPL / 1 */
		[ 1] = 2,	/* CC1 PPL / 2 */
		[ 2] = 4,	/* CC1 PPL / 4 */
		[ 4] = 1,	/* CC2 PPL / 1 */
		[ 5] = 2,	/* CC2 PPL / 2 */
		[ 6] = 4,	/* CC2 PPL / 4 */
		[ 8] = 1,	/* CC3 PPL / 1 */
		[ 9] = 2,	/* CC3 PPL / 2 */
		[10] = 4,	/* CC3 PPL / 4 */
		[12] = 1,	/* CC4 PPL / 1 */
		[13] = 2,	/* CC4 PPL / 2 */
		[14] = 4,	/* CC4 PPL / 4 */
	};
	uint lcrr_div, i, freqCC_PLL[4], rcw_tmp;
	unsigned long sysclk = CONFIG_SYS_CLK_FREQ;

	sysInfo->freqSystemBus = sysclk;
	sysInfo->freqDDRBus = sysclk;
	freqCC_PLL[0] = sysclk;
	freqCC_PLL[1] = sysclk;
	freqCC_PLL[2] = sysclk;
	freqCC_PLL[3] = sysclk;

	sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0xf;
	sysInfo->freqDDRBus *= ((in_be32(&gur->rcwsr[0]) >> 17) & 0xf);
	freqCC_PLL[0] *= (in_be32(&clk->pllc1gsr) >> 1) & 0x3f;
	freqCC_PLL[1] *= (in_be32(&clk->pllc2gsr) >> 1) & 0x3f;
	freqCC_PLL[2] *= (in_be32(&clk->pllc3gsr) >> 1) & 0x3f;
	freqCC_PLL[3] *= (in_be32(&clk->pllc4gsr) >> 1) & 0x3f;

	rcw_tmp = in_be32(&gur->rcwsr[3]);
	for (i = 0; i < cpu_numcores(); i++) {
		u32 c_pll_sel = (in_be32(&clk->clkc0csr + i*8) >> 27) & 0xf;
		u32 cplx_pll = core_cplx_PLL[c_pll_sel];

		sysInfo->freqProcessor[i] =
			 freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
	}

#define PME_CLK_SEL	0x80000000
#define FM1_CLK_SEL	0x40000000
#define FM2_CLK_SEL	0x20000000
	rcw_tmp = in_be32(&gur->rcwsr[7]);

#ifdef CONFIG_SYS_DPAA_PME
	if (rcw_tmp & PME_CLK_SEL)
		sysInfo->freqPME = freqCC_PLL[2] / 2;
	else
		sysInfo->freqPME = sysInfo->freqSystemBus / 2;
#endif

#ifdef CONFIG_SYS_DPAA_FMAN
	if (rcw_tmp & FM1_CLK_SEL)
		sysInfo->freqFMan[0] = freqCC_PLL[2] / 2;
	else
		sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
#if (CONFIG_SYS_NUM_FMAN) == 2
	if (rcw_tmp & FM2_CLK_SEL)
		sysInfo->freqFMan[1] = freqCC_PLL[2] / 2;
	else
		sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
#endif
#endif

#else
	uint plat_ratio,e500_ratio,half_freqSystemBus;
	uint lcrr_div;
	int i;
#ifdef CONFIG_QE
	u32 qe_ratio;
#endif

	plat_ratio = (gur->porpllsr) & 0x0000003e;
	plat_ratio >>= 1;
	sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ;

	/* Divide before multiply to avoid integer
	 * overflow for processor speeds above 2GHz */
	half_freqSystemBus = sysInfo->freqSystemBus/2;
	for (i = 0; i < cpu_numcores(); i++) {
		e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f;
		sysInfo->freqProcessor[i] = e500_ratio * half_freqSystemBus;
	}

	/* Note: freqDDRBus is the MCLK frequency, not the data rate. */
	sysInfo->freqDDRBus = sysInfo->freqSystemBus;

#ifdef CONFIG_DDR_CLK_FREQ
	{
		u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
			>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
		if (ddr_ratio != 0x7)
			sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ;
	}
#endif
#endif

#ifdef CONFIG_QE
	qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO)
			>> MPC85xx_PORPLLSR_QE_RATIO_SHIFT;
	sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ;
#endif

#if defined(CONFIG_SYS_LBC_LCRR)
	/* We will program LCRR to this value later */
	lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
#else
	{
	    volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
	    lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV;
	}
#endif
	if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) {
#if !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
    !defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
		/*
		 * Yes, the entire PQ38 family use the same
		 * bit-representation for twice the clock divider values.
		 */
		lcrr_div *= 2;
#endif
		sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div;
	} else {
		/* In case anyone cares what the unknown value is */
		sysInfo->freqLocalBus = lcrr_div;
	}
}


int get_clocks (void)
{
	sys_info_t sys_info;
#ifdef CONFIG_MPC8544
	volatile ccsr_gur_t *gur = (void *) CONFIG_SYS_MPC85xx_GUTS_ADDR;
#endif
#if defined(CONFIG_CPM2)
	volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
	uint sccr, dfbrg;

	/* set VCO = 4 * BRG */
	cpm->im_cpm_intctl.sccr &= 0xfffffffc;
	sccr = cpm->im_cpm_intctl.sccr;
	dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
#endif
	get_sys_info (&sys_info);
	gd->cpu_clk = sys_info.freqProcessor[0];
	gd->bus_clk = sys_info.freqSystemBus;
	gd->mem_clk = sys_info.freqDDRBus;
	gd->lbc_clk = sys_info.freqLocalBus;

#ifdef CONFIG_QE
	gd->qe_clk = sys_info.freqQE;
	gd->brg_clk = gd->qe_clk / 2;
#endif
	/*
	 * The base clock for I2C depends on the actual SOC.  Unfortunately,
	 * there is no pattern that can be used to determine the frequency, so
	 * the only choice is to look up the actual SOC number and use the value
	 * for that SOC. This information is taken from application note
	 * AN2919.
	 */
#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
	defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555)
	gd->i2c1_clk = sys_info.freqSystemBus;
#elif defined(CONFIG_MPC8544)
	/*
	 * On the 8544, the I2C clock is the same as the SEC clock.  This can be
	 * either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See
	 * 4.4.3.3 of the 8544 RM.  Note that this might actually work for all
	 * 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the
	 * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544.
	 */
	if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG)
		gd->i2c1_clk = sys_info.freqSystemBus / 3;
	else
		gd->i2c1_clk = sys_info.freqSystemBus / 2;
#else
	/* Most 85xx SOCs use CCB/2, so this is the default behavior. */
	gd->i2c1_clk = sys_info.freqSystemBus / 2;
#endif
	gd->i2c2_clk = gd->i2c1_clk;

#if defined(CONFIG_FSL_ESDHC)
#ifdef CONFIG_MPC8569
	gd->sdhc_clk = gd->bus_clk;
#else
	gd->sdhc_clk = gd->bus_clk / 2;
#endif
#endif /* defined(CONFIG_FSL_ESDHC) */

#if defined(CONFIG_CPM2)
	gd->vco_out = 2*sys_info.freqSystemBus;
	gd->cpm_clk = gd->vco_out / 2;
	gd->scc_clk = gd->vco_out / 4;
	gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1)));
#endif

	if(gd->cpu_clk != 0) return (0);
	else return (1);
}


/********************************************
 * get_bus_freq
 * return system bus freq in Hz
 *********************************************/
ulong get_bus_freq (ulong dummy)
{
	return gd->bus_clk;
}

/********************************************
 * get_ddr_freq
 * return ddr bus freq in Hz
 *********************************************/
ulong get_ddr_freq (ulong dummy)
{
	return gd->mem_clk;
}
Commit	Line	Data
42d1f039	1	/*
0e870980	2	* Copyright 2004, 2007-2009 Freescale Semiconductor, Inc.
39aaca1f	3	*
42d1f039 WD	4	* (C) Copyright 2003 Motorola Inc.
	5	* Xianghua Xiao, (X.Xiao@motorola.com)
	6	*
	7	* (C) Copyright 2000
	8	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	9	*
	10	* See file CREDITS for list of people who contributed to this
	11	* project.
	12	*
	13	* This program is free software; you can redistribute it and/or
	14	* modify it under the terms of the GNU General Public License as
	15	* published by the Free Software Foundation; either version 2 of
	16	* the License, or (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, write to the Free Software
	25	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	26	* MA 02111-1307 USA
	27	*/
	28
	29	#include <common.h>
	30	#include <ppc_asm.tmpl>
	31	#include <asm/processor.h>
ada591d2	32	#include <asm/io.h>
42d1f039	33
d87080b7 WD	34	DECLARE_GLOBAL_DATA_PTR;
d87080b7 WD	35
42d1f039 WD	36	/* --------------------------------------------------------------- */
42d1f039 WD	37
42d1f039 WD	38	void get_sys_info (sys_info_t * sysInfo)
42d1f039 WD	39	{
6d0f6bcf	40	volatile ccsr_gur_t gur = (void )(CONFIG_SYS_MPC85xx_GUTS_ADDR);
39aaca1f KG	41	#ifdef CONFIG_FSL_CORENET
	42	volatile ccsr_clk_t clk = (void )(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
	43
	44	const u8 core_cplx_PLL[16] = {
	45	[ 0] = 0, /* CC1 PPL / 1 */
	46	[ 1] = 0, /* CC1 PPL / 2 */
	47	[ 2] = 0, /* CC1 PPL / 4 */
	48	[ 4] = 1, /* CC2 PPL / 1 */
	49	[ 5] = 1, /* CC2 PPL / 2 */
	50	[ 6] = 1, /* CC2 PPL / 4 */
	51	[ 8] = 2, /* CC3 PPL / 1 */
	52	[ 9] = 2, /* CC3 PPL / 2 */
	53	[10] = 2, /* CC3 PPL / 4 */
	54	[12] = 3, /* CC4 PPL / 1 */
	55	[13] = 3, /* CC4 PPL / 2 */
	56	[14] = 3, /* CC4 PPL / 4 */
	57	};
	58
	59	const u8 core_cplx_PLL_div[16] = {
	60	[ 0] = 1, /* CC1 PPL / 1 */
	61	[ 1] = 2, /* CC1 PPL / 2 */
	62	[ 2] = 4, /* CC1 PPL / 4 */
	63	[ 4] = 1, /* CC2 PPL / 1 */
	64	[ 5] = 2, /* CC2 PPL / 2 */
	65	[ 6] = 4, /* CC2 PPL / 4 */
	66	[ 8] = 1, /* CC3 PPL / 1 */
	67	[ 9] = 2, /* CC3 PPL / 2 */
	68	[10] = 4, /* CC3 PPL / 4 */
	69	[12] = 1, /* CC4 PPL / 1 */
	70	[13] = 2, /* CC4 PPL / 2 */
	71	[14] = 4, /* CC4 PPL / 4 */
	72	};
	73	uint lcrr_div, i, freqCC_PLL[4], rcw_tmp;
	74	unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
	75
	76	sysInfo->freqSystemBus = sysclk;
	77	sysInfo->freqDDRBus = sysclk;
	78	freqCC_PLL[0] = sysclk;
	79	freqCC_PLL[1] = sysclk;
	80	freqCC_PLL[2] = sysclk;
	81	freqCC_PLL[3] = sysclk;
	82
	83	sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0xf;
	84	sysInfo->freqDDRBus *= ((in_be32(&gur->rcwsr[0]) >> 17) & 0xf);
	85	freqCC_PLL[0] *= (in_be32(&clk->pllc1gsr) >> 1) & 0x3f;
	86	freqCC_PLL[1] *= (in_be32(&clk->pllc2gsr) >> 1) & 0x3f;
	87	freqCC_PLL[2] *= (in_be32(&clk->pllc3gsr) >> 1) & 0x3f;
	88	freqCC_PLL[3] *= (in_be32(&clk->pllc4gsr) >> 1) & 0x3f;
	89
	90	rcw_tmp = in_be32(&gur->rcwsr[3]);
	91	for (i = 0; i < cpu_numcores(); i++) {
	92	u32 c_pll_sel = (in_be32(&clk->clkc0csr + i*8) >> 27) & 0xf;
	93	u32 cplx_pll = core_cplx_PLL[c_pll_sel];
	94
	95	sysInfo->freqProcessor[i] =
	96	freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
	97	}
	98
	99	#define PME_CLK_SEL 0x80000000
	100	#define FM1_CLK_SEL 0x40000000
	101	#define FM2_CLK_SEL 0x20000000
	102	rcw_tmp = in_be32(&gur->rcwsr[7]);
	103
	104	#ifdef CONFIG_SYS_DPAA_PME
105	if (rcw_tmp & PME_CLK_SEL)
106	sysInfo->freqPME = freqCC_PLL[2] / 2;
107	else
108	sysInfo->freqPME = sysInfo->freqSystemBus / 2;
109	#endif
110
111	#ifdef CONFIG_SYS_DPAA_FMAN
112	if (rcw_tmp & FM1_CLK_SEL)
113	sysInfo->freqFMan[0] = freqCC_PLL[2] / 2;
114	else
115	sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2;
116	#if (CONFIG_SYS_NUM_FMAN) == 2
117	if (rcw_tmp & FM2_CLK_SEL)
118	sysInfo->freqFMan[1] = freqCC_PLL[2] / 2;
119	else
120	sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2;
121	#endif
122	#endif
123
124	#else
66ed6cca	125	uint plat_ratio,e500_ratio,half_freqSystemBus;
ada591d2	126	uint lcrr_div;
2fc7eb0c	127	int i;
b3d7f20f HW	128	#ifdef CONFIG_QE
	129	u32 qe_ratio;
	130	#endif
42d1f039 WD	131
	132	plat_ratio = (gur->porpllsr) & 0x0000003e;
	133	plat_ratio >>= 1;
66ed6cca	134	sysInfo->freqSystemBus = plat_ratio * CONFIG_SYS_CLK_FREQ;
66ed6cca AF	135
	136	/* Divide before multiply to avoid integer
	137	* overflow for processor speeds above 2GHz */
	138	half_freqSystemBus = sysInfo->freqSystemBus/2;
0e870980	139	for (i = 0; i < cpu_numcores(); i++) {
2fc7eb0c HW	140	e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f;
	141	sysInfo->freqProcessor[i] = e500_ratio * half_freqSystemBus;
	142	}
a3e77fa5 JY	143
a3e77fa5 JY	144	/* Note: freqDDRBus is the MCLK frequency, not the data rate. */
d4357932 KG	145	sysInfo->freqDDRBus = sysInfo->freqSystemBus;
	146
	147	#ifdef CONFIG_DDR_CLK_FREQ
	148	{
c0391111 JJ	149	u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
c0391111 JJ	150	>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
d4357932 KG	151	if (ddr_ratio != 0x7)
	152	sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ;
	153	}
	154	#endif
39aaca1f	155	#endif
ada591d2	156
b3d7f20f HW	157	#ifdef CONFIG_QE
	158	qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO)
	159	>> MPC85xx_PORPLLSR_QE_RATIO_SHIFT;
	160	sysInfo->freqQE = qe_ratio * CONFIG_SYS_CLK_FREQ;
	161	#endif
	162
ada591d2 TP	163	#if defined(CONFIG_SYS_LBC_LCRR)
	164	/* We will program LCRR to this value later */
	165	lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
	166	#else
	167	{
	168	volatile ccsr_lbc_t lbc = (void )(CONFIG_SYS_MPC85xx_LBC_ADDR);
	169	lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV;
	170	}
	171	#endif
	172	if (lcrr_div == 2 \|\| lcrr_div == 4 \|\| lcrr_div == 8) {
	173	#if !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
	174	!defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
	175	/*
	176	* Yes, the entire PQ38 family use the same
	177	* bit-representation for twice the clock divider values.
	178	*/
	179	lcrr_div *= 2;
	180	#endif
	181	sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div;
	182	} else {
	183	/* In case anyone cares what the unknown value is */
	184	sysInfo->freqLocalBus = lcrr_div;
	185	}
42d1f039 WD	186	}
42d1f039 WD	187
66ed6cca	188
42d1f039 WD	189	int get_clocks (void)
42d1f039 WD	190	{
42d1f039	191	sys_info_t sys_info;
88353a98	192	#ifdef CONFIG_MPC8544
6d0f6bcf	193	volatile ccsr_gur_t gur = (void ) CONFIG_SYS_MPC85xx_GUTS_ADDR;
88353a98	194	#endif
9c4c5ae3	195	#if defined(CONFIG_CPM2)
6d0f6bcf	196	volatile ccsr_cpm_t cpm = (ccsr_cpm_t )CONFIG_SYS_MPC85xx_CPM_ADDR;
42d1f039 WD	197	uint sccr, dfbrg;
	198
	199	/* set VCO = 4 * BRG */
aafeefbd KG	200	cpm->im_cpm_intctl.sccr &= 0xfffffffc;
aafeefbd KG	201	sccr = cpm->im_cpm_intctl.sccr;
42d1f039 WD	202	dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
	203	#endif
	204	get_sys_info (&sys_info);
2fc7eb0c	205	gd->cpu_clk = sys_info.freqProcessor[0];
42d1f039	206	gd->bus_clk = sys_info.freqSystemBus;
a3e77fa5	207	gd->mem_clk = sys_info.freqDDRBus;
ada591d2	208	gd->lbc_clk = sys_info.freqLocalBus;
88353a98	209
b3d7f20f HW	210	#ifdef CONFIG_QE
	211	gd->qe_clk = sys_info.freqQE;
	212	gd->brg_clk = gd->qe_clk / 2;
	213	#endif
88353a98 TT	214	/*
	215	* The base clock for I2C depends on the actual SOC. Unfortunately,
	216	* there is no pattern that can be used to determine the frequency, so
	217	* the only choice is to look up the actual SOC number and use the value
	218	* for that SOC. This information is taken from application note
	219	* AN2919.
	220	*/
	221	#if defined(CONFIG_MPC8540) \|\| defined(CONFIG_MPC8541) \|\| \
	222	defined(CONFIG_MPC8560) \|\| defined(CONFIG_MPC8555)
943afa22	223	gd->i2c1_clk = sys_info.freqSystemBus;
88353a98 TT	224	#elif defined(CONFIG_MPC8544)
	225	/*
	226	* On the 8544, the I2C clock is the same as the SEC clock. This can be
	227	* either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See
	228	* 4.4.3.3 of the 8544 RM. Note that this might actually work for all
	229	* 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the
	230	* PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544.
	231	*/
	232	if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG)
dffd2446	233	gd->i2c1_clk = sys_info.freqSystemBus / 3;
42653b82 KG	234	else
42653b82 KG	235	gd->i2c1_clk = sys_info.freqSystemBus / 2;
88353a98 TT	236	#else
	237	/* Most 85xx SOCs use CCB/2, so this is the default behavior. */
	238	gd->i2c1_clk = sys_info.freqSystemBus / 2;
	239	#endif
	240	gd->i2c2_clk = gd->i2c1_clk;
943afa22	241
6b9ea08c	242	#if defined(CONFIG_FSL_ESDHC)
7f52ed5e AV	243	#ifdef CONFIG_MPC8569
	244	gd->sdhc_clk = gd->bus_clk;
	245	#else
ef50d6c0 KG	246	gd->sdhc_clk = gd->bus_clk / 2;
ef50d6c0 KG	247	#endif
7f52ed5e	248	#endif /* defined(CONFIG_FSL_ESDHC) */
ef50d6c0	249
9c4c5ae3	250	#if defined(CONFIG_CPM2)
42d1f039 WD	251	gd->vco_out = 2*sys_info.freqSystemBus;
	252	gd->cpm_clk = gd->vco_out / 2;
	253	gd->scc_clk = gd->vco_out / 4;
	254	gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1)));
	255	#endif
	256
	257	if(gd->cpu_clk != 0) return (0);
	258	else return (1);
	259	}
	260
	261
	262	/********************************************
	263	* get_bus_freq
	264	* return system bus freq in Hz
	265	*********************************************/
	266	ulong get_bus_freq (ulong dummy)
	267	{
a3e77fa5	268	return gd->bus_clk;
42d1f039	269	}
d4357932 KG	270
	271	/********************************************
	272	* get_ddr_freq
	273	* return ddr bus freq in Hz
	274	*********************************************/
	275	ulong get_ddr_freq (ulong dummy)
	276	{
a3e77fa5	277	return gd->mem_clk;
d4357932	278	}