From: Javier Martinez Canillas <javierm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Marek Szyprowski
<m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Guillaume Tucker
<guillaume.tucker-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>,
Daniel Vetter <daniel.vetter-/w4YWyX8dFk@public.gmane.org>,
Shuah Khan <shuahkh-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Kukjin Kim <kgene-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Russell King <linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org>,
linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Krzysztof Kozlowski
<krzk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [RFT PATCH] ARM: dts: exynos: Enable Mixer node for Exynos5800 Peach Pi machine
Date: Tue, 12 Dec 2017 08:41:46 +0100 [thread overview]
Message-ID: <2dcc4a3d-bb9a-8338-8273-c5eae58dce34@redhat.com> (raw)
In-Reply-To: <3e6e4b15-9f8a-bea1-3c8e-2d85fc4c512d-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Hello Marek,
On 12/12/2017 08:01 AM, Marek Szyprowski wrote:
> Hi
>
> On 2017-12-11 23:48, Javier Martinez Canillas wrote:
>> Commit 1cb686c08d12 ("ARM: dts: exynos: Add status property to Exynos 542x
>> Mixer nodes") disabled the Mixer node by default in the DTSI and enabled
>> for each Exynos 542x DTS. But unfortunately it missed to enable it for the
>> Exynos5800 Peach Pi machine, since the 5800 is also an 542x SoC variant.
>>
>> Signed-off-by: Javier Martinez Canillas <javierm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>
> Acked-by: Marek Szyprowski <m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
>
Thanks.
>> ---
>>
>> I believe this may cause the boot issues reported on Exynos5800 Peach Pi
>> from v4.15-rc3, the mentioned commit made to v4.15-rc1 but it seems that
>> didn't cause any harm until commit ("510353a63796 drm/bridge: analogix
>> dp: Fix runtime PM state in get_modes() callback") fixed the runtime PM
>> management in the DP driver.
>
> Thanks for analyzing this. Lack of this change was probably responsible for
> Exynos DRM initialization failure ("exynos-drm exynos-drm: failed to bind
> 14530000.hdmi (ops hdmi_component_ops): -1" message and probably further
> error "unbalanced disables for lcd_vdd", which shows that failure path of
> analogix dp and simple panel causes unbalanced regulator disable.
>
Yes, I came to the same conclusion than you in the thread started by
Guillaume. I just couldn't test it.
> This patch should go to v4.15-rcX (fixes) if possible.
>
Indeed. I wondered if it also needed a Fixes tag. I didn't include it because
I thought that both the culprit and the fix would be in the same kernel release.
But I'll include it anyways.
>> I can't test right now, but I'm posting anyways as a RFT in case others
>> that have access to a Peach Pi can test it.
>>
>> Best regards,
>> Javier
>>
>> arch/arm/boot/dts/exynos5800-peach-pi.dts | 4 ++++
>> 1 file changed, 4 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
>> index b2b95ff205e8..0029ec27819c 100644
>> --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
>> +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
>> @@ -664,6 +664,10 @@
>> status = "okay";
>> };
>>
>> +&mixer {
>> + status = "okay";
>> +};
>> +
>> /* eMMC flash */
>> &mmc_0 {
>> status = "okay";
>
> Best regards
>
Best regards,
--
Javier Martinez Canillas
Software Engineer - Desktop Hardware Enablement
Red Hat
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prev parent reply other threads:[~2017-12-12 7:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20171211224905epcas1p4e6d66369f60c7dae0678efc95d0bdb6e@epcas1p4.samsung.com>
2017-12-11 22:48 ` [RFT PATCH] ARM: dts: exynos: Enable Mixer node for Exynos5800 Peach Pi machine Javier Martinez Canillas
[not found] ` <20171211224856.29264-1-javierm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-12-12 7:01 ` Marek Szyprowski
[not found] ` <3e6e4b15-9f8a-bea1-3c8e-2d85fc4c512d-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2017-12-12 7:41 ` Javier Martinez Canillas [this message]
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