u-boot/arch/arm/cpu/arm926ejs/mb86r0x/clock.c
Wolfgang Denk 1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00

27 lines
527 B
C

/*
* (C) Copyright 2010
* Matthias Weisser <weisserm@arcor.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
/*
* Get the peripheral bus frequency depending on pll pin settings
*/
ulong get_bus_freq(ulong dummy)
{
struct mb86r0x_crg * crg = (struct mb86r0x_crg *)
MB86R0x_CRG_BASE;
uint32_t pllmode;
pllmode = readl(&crg->crpr) & MB86R0x_CRG_CRPR_PLLMODE;
if (pllmode == MB86R0x_CRG_CRPR_PLLMODE_X20)
return 40000000;
return 41164767;
}