[PATCH] edb93xx: Fix SDRAM initialization

Sascha Hauer s.hauer at pengutronix.de
Fri Feb 12 02:09:55 EST 2010


On Wed, Feb 10, 2010 at 08:56:15PM +0100, Matthias Kaehlcke wrote:
> Before programming the SDRAM mode registers, mode register update mode must be
> selected by setting the MRS bit and clearing INIT in GlConfig
> 
> Signed-off-by: Matthias Kaehlcke <matthias at kaehlcke.net>

Ok, applied

Sascha

> ---
>  board/edb93xx/sdram_cfg.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
> 
> diff --git a/board/edb93xx/sdram_cfg.c b/board/edb93xx/sdram_cfg.c
> index 9f56f72..25b214b 100644
> --- a/board/edb93xx/sdram_cfg.c
> +++ b/board/edb93xx/sdram_cfg.c
> @@ -111,6 +111,11 @@ static void setup_refresh_timer(void)
>  
>  static void program_mode_registers(void)
>  {
> +	struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE;
> +
> +	/* Select mode register update mode */
> +	writel(GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig);
> +
>  	PROGRAM_MODE_REG(0);
>  
>  #if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2)
> -- 
> 1.6.5
> 
> 
> _______________________________________________
> barebox mailing list
> barebox at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |



More information about the barebox mailing list