linux-kernel - Re: [PATCH] ARM: dts: bcm283x: Use firmware PM driver for V3D

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Date:   Thu, 26 Mar 2020 18:24:45 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>
Cc:     devicetree@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Scott Branden <sbranden@...adcom.com>,
        Ray Jui <rjui@...adcom.com>, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
        wahrenst@....net, linux-arm-kernel@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: dts: bcm283x: Use firmware PM driver for V3D

Am 26.03.20 um 13:24 schrieb Nicolas Saenz Julienne:
> Hi Stefan and Florian,
>
> On Tue, 2020-03-03 at 18:32 +0100, Nicolas Saenz Julienne wrote:
>> The register based driver turned out to be unstable, specially on RPi3a+
>> but not limited to it. While a fix is being worked on, we roll back to
>> using firmware based scheme.
>>
>> Fixes: e1dc2b2e1bef ("ARM: bcm283x: Switch V3D over to using the PM driver
>> instead of firmware")
>> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
>> ---
> now that the problem Stefan was seeing is being taken care of, I think it's
> fair to reconsider taking this patch. Maybe even adding a Tested-by by Stefan?

after applying "drm/vc4: Fix HDMI mode validation" this commit doesn't
cause any regression:

Tested-by: Stefan Wahren <stefan.wahren@...e.com>

Thanks

>
> Regards,
> Nicolas