[PATCH 03/11] ARM: clps711x: Adds config option for CPU PLL multiplier

[Jean-Christophe PLAGNIOL-VILLARD]

On 14:02 Fri 08 Feb     , Alexander Shiyan wrote:
> 
> Signed-off-by: Alexander Shiyan <shc_work at mail.ru>
> ---
>  arch/arm/mach-clps711x/Kconfig    |   13 +++++++++++++
>  arch/arm/mach-clps711x/lowlevel.c |    4 ++--
>  2 files changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/mach-clps711x/Kconfig b/arch/arm/mach-clps711x/Kconfig
> index f0adeda..d2873b4 100644
> --- a/arch/arm/mach-clps711x/Kconfig
> +++ b/arch/arm/mach-clps711x/Kconfig
> @@ -10,6 +10,19 @@ config MACH_CLEP7212
>  
>  endchoice
>  
> +menu "CLPS711X specific settings"
> +
> +config CLPS711X_CPU_PLL_MULT
> +	int "CPU PLL multiplier (20-50)"
> +	range 20 50
> +	default "40"
> +	help
> +	  Define CPU PLL multiplier. PLL is calculated by formula:
> +	    PLL Frequency = (PLL Multiplier / 2) * 3686400 Hz
> +	  Default value is 40, for achieve 73 MHz.
> +
this board specific put this in c code
kconfig is too easy to break

check how we do on at91

Best Regards,
J.
> +endmenu
> +
>  config BOARDINFO
>  	default "Cirrus Logic CLEP7212" if MACH_CLEP7212
>  
> diff --git a/arch/arm/mach-clps711x/lowlevel.c b/arch/arm/mach-clps711x/lowlevel.c
> index 0249c60..245ac93 100644
> --- a/arch/arm/mach-clps711x/lowlevel.c
> +++ b/arch/arm/mach-clps711x/lowlevel.c
> @@ -18,10 +18,10 @@
>  #include <mach/clps711x.h>
>  
>  #define MAIN_CLOCK		3686400
> -#define CPU_SPEED		92160000
> +#define CPU_SPEED		((CONFIG_CLPS711X_CPU_PLL_MULT * MAIN_CLOCK) / 2)
>  #define BUS_SPEED		(CPU_SPEED / 2)
>  
> -#define PLL_VALUE		(((CPU_SPEED * 2) / MAIN_CLOCK) << 24)
> +#define PLL_VALUE		(CONFIG_CLPS711X_CPU_PLL_MULT << 24)
>  #define SDRAM_REFRESH_RATE	(64 * (BUS_SPEED / (8192 * 1000)))
>  
>  void __naked __bare_init barebox_arm_reset_vector(void)
> -- 
> 1.7.3.4
> 
> 
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