Re: [PATCH 2/3] pm: at91: pm_suspend: MOR register KEY was missing

From: Alexandre Belloni
Date: Tue Feb 17 2015 - 05:24:19 EST


On 12/02/2015 at 10:52:13 +0800, Wenyou Yang wrote :
> From: Patrice Vilchez <patrice.vilchez@xxxxxxxxx>
>
> Because writing the MOR register requires the PASSWD(0x37),
> if missed, the write operation will be aborted.
>
> Signed-off-by: Patrice Vilchez <patrice.vilchez@xxxxxxxxx>
Acked-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>

> ---
> arch/arm/mach-at91/pm_suspend.S | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
> index 1c7256a..5347ad4 100644
> --- a/arch/arm/mach-at91/pm_suspend.S
> +++ b/arch/arm/mach-at91/pm_suspend.S
> @@ -132,6 +132,7 @@ ENTRY(at91_pm_suspend_in_sram)
> /* Turn off the main oscillator */
> ldr tmp1, [pmc, #AT91_CKGR_MOR]
> bic tmp1, tmp1, #AT91_PMC_MOSCEN
> + orr tmp1, tmp1, #AT91_PMC_KEY
> str tmp1, [pmc, #AT91_CKGR_MOR]
>
> skip_disable_main_clock:
> @@ -149,6 +150,7 @@ skip_disable_main_clock:
> /* Turn on the main oscillator */
> ldr tmp1, [pmc, #AT91_CKGR_MOR]
> orr tmp1, tmp1, #AT91_PMC_MOSCEN
> + orr tmp1, tmp1, #AT91_PMC_KEY
> str tmp1, [pmc, #AT91_CKGR_MOR]
>
> wait_moscrdy
> --
> 1.7.9.5
>

--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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