Re: [RFC][PATCH 2/3] drm/modes: Make width-mm/height-mm mandatory in of_get_drm_panel_display_mode()

On Fri, Apr 01, 2022 at 10:36:24PM +0200, Marek Vasut wrote:

On 4/1/22 20:46, Laurent Pinchart wrote:

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On Fri, Apr 01, 2022 at 06:37:54PM +0200, Marek Vasut wrote:

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Make the width-mm/height-mm panel properties mandatory in of_get_drm_panel_display_mode(), print error message and return -ve in case these DT properties are not present. This is needed to correctly report panel dimensions.

Can we guarantee this won't cause a regression ?

For the upstream DTs, I think we can. For downstream DTs, we cannot know.

Are there users of this function whose DT bindings don't require the width-mm and height-mm properties ?