[PATCH] drm/exynos: dp: Fix panel and bridge lookup logic

Marek Szyprowski m.szyprowski at samsung.com
Mon Feb 8 12:38:11 UTC 2016

Hi Javier,

On 2016-02-08 13:03, Javier Martinez Canillas wrote:
> Hello Inki,
> On 01/29/2016 12:09 PM, Javier Martinez Canillas wrote:
>> Commit a9fa852886fd ("drm/exynos: dp: add of_graph dt binding support
>> for panel") made the Exynos DP DT binding more consistent since the OF
>> graph could be used to lookup either a panel or a bridge device node.
>> Before that commit, a panel would be looked up using a phandle and a
>> bridge using the OF graph which made the DT binding not consistent.
>> But the patch broke the later case since not finding a panel dev node
>> would cause the driver's to do a probe deferral instead of attempting
>> to lookup a bridge device node associated with the remote endpoint.
>> So instead of returning a -EPROBE_DEFER if a panel is not found, check
>> if there's a bridge and only do a probe deferral if both aren't found.
>> Fixes: a9fa852886fd ("drm/exynos: dp: add of_graph dt binding support 
>> for panel")
>> Signed-off-by: Javier Martinez Canillas <javier at osg.samsung.com>
> Any comments about this patch? It is needed to have display working on
> machines with a bridge chip again so it should be pushed to -rc ASAP.

Please check v4.5-rc3, this patch is already merged there.

Best regards
Marek Szyprowski, PhD
Samsung R&D Institute Poland

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