RE: [PATCH] OMAP3: PM: Fix for Silicon bug on Context Restore on OMAP3430

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Shweta,
> -----Original Message-----
> From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-
> owner@xxxxxxxxxxxxxxx] On Behalf Of y@xxxxxxxxxxxx
> Sent: Monday, October 05, 2009 4:53 PM
> To: linux-omap@xxxxxxxxxxxxxxx
> Cc: Gulati, Shweta
> Subject: [PATCH] OMAP3: PM: Fix for Silicon bug on Context Restore on
> OMAP3430
> 
> From: Shweta Gulati <shweta.gulati@xxxxxx>

Please add change-log / description about this patch here.

> Signed-off-by: Shweta Gulati <shweta.gulati@xxxxxx>
> ---
>  arch/arm/mach-omap2/pm34xx.c |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> index a9eda25..38f4781 100644
> --- a/arch/arm/mach-omap2/pm34xx.c
> +++ b/arch/arm/mach-omap2/pm34xx.c
> @@ -140,6 +140,12 @@ static void omap3_core_save_context(void)
>  	omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
>  	control_padconf_off |= START_PADCONF_SAVE;
>  	omap_ctrl_writel(control_padconf_off, OMAP343X_CONTROL_PADCONF_OFF);
> +	/* Due to Silicon Bug on context restore it is found
> +	 * that the CONTROL_PAD_CONF_ETK14 register is not saved into
> +	 * scratch pad memory sometimes. To rectify it delay acess by Mpu
> +	 * for 300us for scm to finish saving task
> +	 */
> +	udelay(300);
>  	/* wait for the save to complete */
>  	while (!omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
>  			& PADCONF_SAVE_DONE)
> --
> 1.5.4.7
> 
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Regards,
Santosh
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