summaryrefslogtreecommitdiffstats
path: root/arch/arm/cpu/arm926ejs/mb86r0x/clock.c
blob: 1f6f66eba2362773d6463e54d8e66bbd37ddf017 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
/*
 * (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;
}
OpenPOWER on IntegriCloud