[U-Boot] [PATCHv2 2/3] OMAP3: SDRC: Introduce Numonyx DDR type

Wolfgang Denk wd at denx.de
Sun Oct 10 11:17:04 CEST 2010


Dear Enric Balletbo i Serra,

In message <1286699659-2952-3-git-send-email-eballetbo at gmail.com> you wrote:
> Introduce Numonyx DDR timings and provide CONFIG_OMAP3_NUMONYX_DDR
> config options to allow for platform files to setup their timings.
> 
> Signed-off-by: Enric Balletbo i Serra <eballetbo at gmail.com>
> ---
>  arch/arm/include/asm/arch-omap3/mem.h |   42 +++++++++++++++++++++++++++++++++
>  1 files changed, 42 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/include/asm/arch-omap3/mem.h b/arch/arm/include/asm/arch-omap3/mem.h
> index a78cf9f..d574f89 100644
> --- a/arch/arm/include/asm/arch-omap3/mem.h
> +++ b/arch/arm/include/asm/arch-omap3/mem.h
> @@ -128,6 +128,44 @@ enum {
>  		(MICRON_XSR_165 << 0) | (MICRON_TXP_165 << 8) |	\
>  		(MICRON_TWTR_165 << 16))
>  
> +/* NUMONYX part of IGEP v2 (165MHz optimized) 6.06ns
> + *   ACTIMA

Incorrect multiline comment style. Please break into:

	/*
	 * NUMONYX part ...


> + *      TDAL = Twr/Tck + Trp/tck = 15/6 + 18/6 = 2.5 + 3 = 5.5 -> 6
> + *      TDPL (Twr) = 15/6 = 2.5 -> 3
> + *      TRRD = 12/6 = 2
> + *      TRCD = 22.5/6 = 3.75 -> 4
> + *      TRP  = 18/6 = 3
> + *      TRAS = 42/6 = 7
> + *      TRC  = 60/6 = 10
> + *      TRFC = 140/6 = 23.3 -> 24
> + *   ACTIMB
> + *	TWTR = 2
> + *	TCKE = 2
> + *	TXSR = 200/6 =  33.3 -> 34
> + *	TXP  = 1.0 + 1.1 = 2.1 -> 3
> + */
> +#define NUMONYX_TDAL_165   6
> +#define NUMONYX_TDPL_165   3
> +#define NUMONYX_TRRD_165   2
> +#define NUMONYX_TRCD_165   4
> +#define NUMONYX_TRP_165    3
> +#define NUMONYX_TRAS_165   7
> +#define NUMONYX_TRC_165   10
> +#define NUMONYX_TRFC_165  24
> +#define NUMONYX_V_ACTIMA_165 ((NUMONYX_TRFC_165 << 27) | \
> +		(NUMONYX_TRC_165 << 22) | (NUMONYX_TRAS_165 << 18) | \
> +		(NUMONYX_TRP_165 << 15) | (NUMONYX_TRCD_165 << 12) | \
> +		(NUMONYX_TRRD_165 << 9) | (NUMONYX_TDPL_165 << 6) | \
> +		(NUMONYX_TDAL_165))
> +
> +#define NUMONYX_TWTR_165   2
> +#define NUMONYX_TCKE_165   2
> +#define NUMONYX_TXP_165    3
> +#define NUMONYX_XSR_165    34
> +#define NUMONYX_V_ACTIMB_165 ((NUMONYX_TCKE_165 << 12) | \
> +		(NUMONYX_XSR_165 << 0) | (NUMONYX_TXP_165 << 8) | \
> +		(NUMONYX_TWTR_165 << 16))
> +
>  #ifdef CONFIG_OMAP3_INFINEON_DDR
>  #define V_ACTIMA_165 INFINEON_V_ACTIMA_165
>  #define V_ACTIMB_165 INFINEON_V_ACTIMB_165
> @@ -136,6 +174,10 @@ enum {
>  #define V_ACTIMA_165 MICRON_V_ACTIMA_165
>  #define V_ACTIMB_165 MICRON_V_ACTIMB_165
>  #endif
> +#ifdef CONFIG_OMAP3_NUMONYX_DDR
> +#define V_ACTIMA_165 NUMONYX_V_ACTIMA_165
> +#define V_ACTIMB_165 NUMONYX_V_ACTIMB_165
> +#endif

You are using exactly the same settings as for the
#ifdef CONFIG_OMAP3_MICRON_DDR  above. Why do you repeat the lines
then? Rather use a "#if defined(...) || defined(...)"

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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