[mirror_ubuntu-bionic-kernel.git] / arch / arm / mach-ep93xx / include / mach / hardware.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * arch/arm/mach-ep93xx/include/mach/hardware.h
 */

#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H

#include <mach/platform.h>

/*
 * The EP93xx has two external crystal oscillators.  To generate the
 * required high-frequency clocks, the processor uses two phase-locked-
 * loops (PLLs) to multiply the incoming external clock signal to much
 * higher frequencies that are then divided down by programmable dividers
 * to produce the needed clocks.  The PLLs operate independently of one
 * another.
 */
#define EP93XX_EXT_CLK_RATE	14745600
#define EP93XX_EXT_RTC_RATE	32768

#define EP93XX_KEYTCHCLK_DIV4	(EP93XX_EXT_CLK_RATE / 4)
#define EP93XX_KEYTCHCLK_DIV16	(EP93XX_EXT_CLK_RATE / 16)

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
e7736d47	2	/*
a09e64fb	3	* arch/arm/mach-ep93xx/include/mach/hardware.h
e7736d47	4	*/
43234b1e	5
be509729 RK	6	#ifndef __ASM_ARCH_HARDWARE_H
be509729 RK	7	#define __ASM_ARCH_HARDWARE_H
e7736d47	8
583ddafe	9	#include <mach/platform.h>
e7736d47	10
701fac82 HS	11	/*
	12	* The EP93xx has two external crystal oscillators. To generate the
	13	* required high-frequency clocks, the processor uses two phase-locked-
	14	* loops (PLLs) to multiply the incoming external clock signal to much
	15	* higher frequencies that are then divided down by programmable dividers
	16	* to produce the needed clocks. The PLLs operate independently of one
	17	* another.
	18	*/
	19	#define EP93XX_EXT_CLK_RATE 14745600
	20	#define EP93XX_EXT_RTC_RATE 32768
	21
	22	#define EP93XX_KEYTCHCLK_DIV4 (EP93XX_EXT_CLK_RATE / 4)
	23	#define EP93XX_KEYTCHCLK_DIV16 (EP93XX_EXT_CLK_RATE / 16)
	24
be509729	25	#endif