[U-Boot] [PATCH v2 03/10] mx23evk: Adjust DRAM control register to use full 128MB of RAM

Marek Vasut marex at denx.de
Wed Feb 13 22:13:04 CET 2013


Dear Otavio Salvador,

> Adjust HW_DRAM_CTL14 to enable the chip selects to allow usage of full
> 128MB of RAM.

Why can this not be enabled globally?

> Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
> ---
> Changes in v2: None
> 
>  board/freescale/mx23evk/spl_boot.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/board/freescale/mx23evk/spl_boot.c
> b/board/freescale/mx23evk/spl_boot.c index 6007433..b6f4e7e 100644
> --- a/board/freescale/mx23evk/spl_boot.c
> +++ b/board/freescale/mx23evk/spl_boot.c
> @@ -98,6 +98,16 @@ const iomux_cfg_t iomux_setup[] = {
>  		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
>  };
> 
> +#define HW_DRAM_CTL14	(0x38 >> 2)
> +#define CS_MAP		0x3
> +#define INTAREF		0x2
> +#define HW_DRAM_CTL14_CONFIG	(INTAREF << 8 | CS_MAP)
> +
> +void mxs_adjust_memory_params(uint32_t *dram_vals)
> +{
> +	dram_vals[HW_DRAM_CTL14] = HW_DRAM_CTL14_CONFIG;
> +}
> +
>  void board_init_ll(void)
>  {
>  	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));

Best regards,
Marek Vasut


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