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[ARM] 2855/1: S3C2410 - add CLKSLOW definitions, and show in init 

Patch from Ben Dooks

Add the definitions for the S3C2410_CLKSLOW registers to
the header files, and show the values when the system
starts up

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ben Dooks 2005-08-29 22:46:30 +01:00 committed by Russell King
parent bdf82b59c5
commit d6b0bf213b
2 changed files with 18 additions and 2 deletions
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9
arch/arm/mach-s3c2410/clock.c
View File

@ -388,6 +388,7 @@ int __init s3c24xx_setup_clocks(unsigned long xtal,
unsigned long hclk,
unsigned long pclk)
{
unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW);
struct clk *clkp = init_clocks;
int ptr;
int ret;
@ -446,5 +447,13 @@ int __init s3c24xx_setup_clocks(unsigned long xtal,
}
}
/* show the clock-slow value */
printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n",
print_mhz(xtal / ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))),
(clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast",
(clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on",
(clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on");
return 0;
}

11
include/asm-arm/arch-s3c2410/regs-clock.h
View File

@ -1,7 +1,7 @@
/* linux/include/asm/arch-s3c2410/regs-clock.h
*
* Copyright (c) 2003,2004 Simtec Electronics <linux@simtec.co.uk>
* http://www.simtec.co.uk/products/SWLINUX/
* Copyright (c) 2003,2004,2005 Simtec Electronics <linux@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -17,6 +17,7 @@
* 29-Sep-2004 Ben Dooks Fixed usage for assembly inclusion
* 10-Feb-2005 Ben Dooks Fixed CAMDIVN address (Guillaume Gourat)
* 10-Mar-2005 Lucas Villa Real Changed S3C2410_VA to S3C24XX_VA
* 27-Aug-2005 Ben Dooks Add clock-slow info
*/
#ifndef __ASM_ARM_REGS_CLOCK
@ -74,6 +75,12 @@
#define S3C2410_CLKDIVN_PDIVN (1<<0)
#define S3C2410_CLKDIVN_HDIVN (1<<1)
#define S3C2410_CLKSLOW_UCLK_OFF (1<<7)
#define S3C2410_CLKSLOW_MPLL_OFF (1<<5)
#define S3C2410_CLKSLOW_SLOW (1<<4)
#define S3C2410_CLKSLOW_SLOWVAL(x) (x)
#define S3C2410_CLKSLOW_GET_SLOWVAL(x) ((x) & 7)
#ifndef __ASSEMBLY__
static inline unsigned int