u-boot/arch/arm/include/asm/arch-mx25/clock.h

/*
 *
 * (c) 2009 Ilya Yanok, Emcraft Systems <yanok@emcraft.com>
 *
 * Modified for mx25 by John Rigby <jrigby@gmail.com>
 *
 * 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
 */

#ifndef __ASM_ARCH_CLOCK_H
#define __ASM_ARCH_CLOCK_H

#include <common.h>

#ifdef CONFIG_MX25_HCLK_FREQ
#define MXC_HCLK	CONFIG_MX25_HCLK_FREQ
#else
#define MXC_HCLK	24000000
#endif

#ifdef CONFIG_MX25_CLK32
#define MXC_CLK32	CONFIG_MX25_CLK32
#else
#define MXC_CLK32	32768
#endif

enum mxc_clock {
	MXC_CSI_CLK,
	MXC_EPIT_CLK,
	MXC_ESAI_CLK,
	MXC_ESDHC1_CLK,
	MXC_ESDHC2_CLK,
	MXC_GPT_CLK,
	MXC_I2C_CLK,
	MXC_LCDC_CLK,
	MXC_NFC_CLK,
	MXC_OWIRE_CLK,
	MXC_PWM_CLK,
	MXC_SIM1_CLK,
	MXC_SIM2_CLK,
	MXC_SSI1_CLK,
	MXC_SSI2_CLK,
	MXC_UART_CLK,
	MXC_ARM_CLK,
	MXC_FEC_CLK,
	MXC_CLK_NUM
};

ulong imx_get_perclk(int clk);
ulong imx_get_ahbclk(void);

#define imx_get_uartclk() imx_get_perclk(15)
#define imx_get_fecclk() (imx_get_ahbclk()/2)

unsigned int mxc_get_clock(enum mxc_clock clk);

#endif /* __ASM_ARCH_CLOCK_H */