[PATCH 1/2] S5P DRAM support

Sascha Hauer s.hauer at pengutronix.de
Thu May 24 16:13:44 EDT 2012


On Thu, May 24, 2012 at 07:27:44PM +0600, Alexey Galakhov wrote:
> Signed-off-by: Alexey Galakhov <agalakhov at gmail.com>
> ---
>  arch/arm/mach-samsung/Makefile                    |    2 +-
>  arch/arm/mach-samsung/include/mach/s3c-generic.h  |    6 +
>  arch/arm/mach-samsung/include/mach/s5pcxx-iomap.h |    3 +
>  arch/arm/mach-samsung/mem-s5pcxx.c                |  319 +++++++++++++++++++++
>  4 files changed, 329 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/mach-samsung/mem-s5pcxx.c
> 
> +
> +static void __bare_init s5p_dram_init_seq_lpddr(phys_addr_t base, unsigned chip)
> +{
> +	const uint32_t emr = 0x400; /* DQS disable */
> +	const uint32_t mr = (((S5P_DRAM_WR) - 1) << 9)
> +			  | ((S5P_DRAM_CAS) << 4)
> +			  | (S5P_DRAM_BURST);
> +	/* FIXME this sequence is untested */

Maybe add these comments to the exported functions rather than in the
helpers? It would be more prominent and people would see it more easily.

Sascha

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