> From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-
> ow...@vger.kernel.org] On Behalf Of tero.kri...@nokia.com
> Sent: Monday, October 19, 2009 5:19 AM
> Is there errata number available for this issue by the way? I could attach
> this to the patch.
No. I expect in the next few weeks it will be published. The issue is pretty
well understood now down to gate level so time to publish should be process.
> Anyway, I guess the optimization would look something like this:
The below looks good.
> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> index 210a806..7a98321 100644
> --- a/arch/arm/mach-omap2/pm34xx.c
> +++ b/arch/arm/mach-omap2/pm34xx.c
> @@ -93,6 +93,8 @@ u32 voltage_off_while_idle;
> OMAP3430_ST_GPT5_MASK|OMAP3430_ST_GPT4_MASK|\
> OMAP3430_ST_GPT3_MASK|OMAP3430_ST_GPT2_MASK)
>
> +#define INTC_SYSCONFIG 0x10
> +
> struct power_state {
> struct powerdomain *pwrdm;
> u32 next_state;
> @@ -505,6 +507,12 @@ void omap_sram_idle(void)
> prm_set_mod_reg_bits(OMAP3430_EN_IO, WKUP_MOD, PM_WKEN);
> omap3_enable_io_chain();
> }
> + /*
> + * Disable INTC autoidle as it can cause interrupt controller
> + * to enter unknown state with right combination of sleep / wakeup
> + * transitions
> + */
> + omap_writel(0x0, OMAP34XX_IC_BASE + INTC_SYSCONFIG);
>
> /*
> * On EMU/HS devices ROM code restores a SRDC value
> @@ -561,6 +569,8 @@ void omap_sram_idle(void)
> OMAP3430_GR_MOD,
>
> OMAP3_PRM_VOLTCTRL_OFFSET);
> }
> + /* Re-enable interrupt controller autoidle */
> + omap_writel(OMAP3430_AUTOIDLE, OMAP34XX_IC_BASE + INTC_SYSCONFIG);
>
> /*
> * Enable smartreflex after WFI. Only needed if we
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