linux-kernel - Re: [PATCH v2] drm/rockchip: remove existing generic drivers to take over the device

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Message-ID: <1b492488-3f25-fca9-e9d9-78138bed1d2c@redhat.com>
Date:   Sun, 16 May 2021 17:25:47 +0200
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     Thomas Zimmermann <tzimmermann@...e.de>,
        linux-kernel@...r.kernel.org
Cc:     Peter Robinson <pbrobinson@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Heiko Stübner <heiko@...ech.de>,
        Sandy Huang <hjc@...k-chips.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v2] drm/rockchip: remove existing generic drivers to take
 over the device

Hello Thomas,

On 5/16/21 12:30 PM, Thomas Zimmermann wrote:
> 
> 
> Am 16.05.21 um 09:48 schrieb Javier Martinez Canillas:
>> There are drivers that register framebuffer devices very early in the boot
>> process and make use of the existing framebuffer as setup by the firmware.
>>
>> If one of those drivers has registered a fbdev, then the fallback fbdev 
> of
>> the DRM driver won't be bound to the framebuffer console. To avoid that,
>> remove any existing generic driver and take over the graphics device.
>>
>> By doing that, the fb mapped to the console is switched correctly from the
>> early fbdev to the one registered by the rockchip DRM driver:
>>
>>      [   40.752420] fb0: switching to rockchip-drm-fb from EFI VGA
>>
>> Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
> 
> Acked-by: Thomas Zimmermann <tzimmermann@...e.de>
> 
> Ping me if no one else merges the patch.
>

Sure, I will. And thanks a lot for your review!
 
> Best regards
> Thomas
>

Best regards,
-- 
Javier Martinez Canillas
Software Engineer
New Platform Technologies Enablement team
RHEL Engineering