linux-kernel - Re: [PATCH 3/3] drm/bridge: fsl-ldb: Drop DE signal polarity inversion

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Message-ID: <66b6ed2f-a2db-e02d-503f-5bc736c4ee57@denx.de>
Date:   Fri, 1 Jul 2022 10:03:18 +0200
From:   Marek Vasut <marex@...x.de>
To:     Liu Ying <victor.liu@....com>, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     andrzej.hajda@...el.com, narmstrong@...libre.com,
        robert.foss@...aro.org, Laurent.pinchart@...asonboard.com,
        jonas@...boo.se, jernej.skrabec@...il.com, airlied@...ux.ie,
        daniel@...ll.ch, sam@...nborg.org, linux-imx@....com
Subject: Re: [PATCH 3/3] drm/bridge: fsl-ldb: Drop DE signal polarity
 inversion

On 7/1/22 08:56, Liu Ying wrote:
> It's unnecessary to invert input data enable signal polarity
> according to the output one. Let's drop the inversion.
> Since ->atomic_check() does nothing more than the inversion,
> it can be dropped entirely as well.
> 
> Without this patch, 'koe,tx26d202vm0bwa' LVDS panel connected
> with i.MX8MP EVK board does not show any data on screen.

I send exactly the same change yesterday:
[PATCH] drm: bridge: ldb: Drop DE flip from Freescale i.MX8MP LDB bridge

So either can be applied.

Reviewed-by: Marek Vasut <marex@...x.de>