From: kgene.kim@samsung•com (Kukjin Kim)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 1/2] ARM: dts: Add mask-tpm-reset to the device tree
Date: Wed, 16 Jul 2014 02:35:56 +0900 [thread overview]
Message-ID: <53C5667C.9070207@samsung.com> (raw)
In-Reply-To: <CAD=FV=XJD=Dt8z5Vmy2wXs4_FWqiW3=AhVw=sSZXFxv31+FHhA@mail.gmail.com>
On 07/16/14 01:19, Doug Anderson wrote:
> Vikas,
>
> On Tue, Jul 15, 2014 at 3:31 AM, Vikas Sajjan<vikas.sajjan@samsung•com> wrote:
>> From: Doug Anderson<dianders@chromium•org>
>>
>> The mask-tpm-reset GPIO is used by the kernel to prevent the TPM from
>> being reset across sleep/wake. If we don't set it to anything then
>> the TPM will be reset. U-Boot will detect this as invalid
>> and will reset the system on resume time. This GPIO can always be low
>> and not hurt anything. It will get pulled back high again during a
>> normal warm reset when it will default back to an input.
>>
>> To properly preserve the TPM state across suspend/resume and to make
>> the chrome U-Boot happy, properly set the GPIO to mask the
>> reset to the TPM.
>>
>> Signed-off-by: Doug Anderson<dianders@chromium•org>
>> Signed-off-by: Vikas Sajjan<vikas.sajjan@samsung•com>
>> ---
>> arch/arm/boot/dts/exynos5420-peach-pit.dts | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>
> Looks good to me. I'll assume Kukjin will add the words
> "exynos5420-peach-pit" into the patch description when applying.
>
Yes :)
> Reviewed-by: Doug Anderson<dianders@chromium•org>
>
I've applied this series, thanks.
- Kukjin
next prev parent reply other threads:[~2014-07-15 17:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-15 10:31 [PATCH v3 0/2] Add mask-tpm-reset DT node to the exynos5 Vikas Sajjan
2014-07-15 10:31 ` [PATCH v3 1/2] ARM: dts: Add mask-tpm-reset to the device tree Vikas Sajjan
2014-07-15 16:19 ` Doug Anderson
2014-07-15 17:35 ` Kukjin Kim [this message]
2014-07-15 10:31 ` [PATCH v3 2/2] ARM: dts: Add mask-tpm-reset DT node to the exynos5800-peach-pi Vikas Sajjan
2014-07-15 16:19 ` Doug Anderson
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