diff options
| author |   Ben Dooks <ben-linux@fluff.org> | 2005-08-29 22:46:30 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2005-08-29 22:46:30 +0100 |
| commit | d6b0bf213b4be478029b768fcee80058ace7150a (patch) | |
| tree | e963fa53b688c1c8001d9da2e764cd57d62fcb4b | |
| parent | [ARM] 2836/1: Cleanup IXP4xx GPIO code (diff) | |
| download | linux-dev-d6b0bf213b4be478029b768fcee80058ace7150a.tar.xz linux-dev-d6b0bf213b4be478029b768fcee80058ace7150a.zip | |
[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>
| -rw-r--r-- | arch/arm/mach-s3c2410/clock.c | 9 | ||||
| -rw-r--r-- | include/asm-arm/arch-s3c2410/regs-clock.h | 11 |
2 files changed, 18 insertions, 2 deletions
diff --git a/arch/arm/mach-s3c2410/clock.c b/arch/arm/mach-s3c2410/clock.c index 9a66050e887d..f59608268751 100644 --- a/arch/arm/mach-s3c2410/clock.c +++ b/arch/arm/mach-s3c2410/clock.c @@ -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; } diff --git a/include/asm-arm/arch-s3c2410/regs-clock.h b/include/asm-arm/arch-s3c2410/regs-clock.h index e5e938b79acc..16f4c3cc1388 100644 --- a/include/asm-arm/arch-s3c2410/regs-clock.h +++ b/include/asm-arm/arch-s3c2410/regs-clock.h @@ -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 |