linux-kernel - Re: [PATCH v2 5/5] ARM: dts: da850-lcdk: add tilcdc panel node

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Date:   Tue, 1 Nov 2016 12:38:36 +0200
From:   Tomi Valkeinen <tomi.valkeinen@...com>
To:     Sekhar Nori <nsekhar@...com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Russell King <linux@...linux.org.uk>
CC:     LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-drm <dri-devel@...ts.freedesktop.org>,
        linux-devicetree <devicetree@...r.kernel.org>,
        Jyri Sarha <jsarha@...com>, David Airlie <airlied@...ux.ie>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH v2 5/5] ARM: dts: da850-lcdk: add tilcdc panel node

On 01/11/16 12:26, Sekhar Nori wrote:
> On Monday 31 October 2016 08:15 PM, Bartosz Golaszewski wrote:
>> The tilcdc driver is not yet ready for working together with the
>> dumb-vga-dac drm bridge. While the work on enabling drm_bridge
>> support in tilcdc continues, enable the VGA connector on da850-lcdk
>> with the following workaround: use the tilcdc-panel driver with
>> a set of common (and tested) resolutions.
>>
>> Once the drm bridge support is complete, we'll remove the node added
>> by this patch and use the correct solution. This change will be
>> transparent for the user.
>>
>> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> I dont think this can be applied. If this goes in v4.10, then the DT
> blob becomes an ABI and driver will have to support tilcdc-panel driver
> for DA850 forever.
> 
> Its probably better to wait for the proper driver support to arrive.

Agreed, NAK for this.

 Tomi



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