[U-Boot] [PATCH] ppc4xx: Add CONFIG_DDR_RFDC_FIXED to allow board specific RFDC values

Wolfgang Denk wd at denx.de
Mon Jul 19 19:54:08 CEST 2010


Dear Stefan Roese,

In message <1279542253-27041-1-git-send-email-sr at denx.de> you wrote:
> Using this define, a board can define an opimized RFDC value and use
> the auto calibration code to "tune" the remaining DDR2 controller
> calibration register.
...
> @@ -767,6 +767,13 @@ static u32 DQS_calibration_methodB(struct ddrautocal *cal)
>  
>  	debug("\n\n");
>  
> +#if defined(CONFIG_DDR_RFDC_FIXED)
> +	mtsdram(SDRAM_RFDC, CONFIG_DDR_RFDC_FIXED);
> +	size = 512;
> +	rffd_average = CONFIG_DDR_RFDC_FIXED & SDRAM_RFDC_RFFD_MASK;
> +	mfsdram(SDRAM_RDCC, rdcc);	/* record this value */
> +	cal->rdcc = rdcc;
> +#else
>  	in_window = 0;
>  	rdcc = 0;
>  
> @@ -830,6 +837,7 @@ static u32 DQS_calibration_methodB(struct ddrautocal *cal)
>  		rffd_average = SDRAM_RFDC_RFFD_MAX;
>  
>  	mtsdram(SDRAM_RFDC, rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd_average));
> +#endif

In cases of such long blocks, where the ending #endif is many, many
lines away, it is usually helpful to mark where the #endif belongs to:

	#endif /* CONFIG_DDR_RFDC_FIXED */

Please do this here, too.


Best regards,

Wolfgang Denk

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