linux-kernel - Re: [PATCH 0/5] drm/bridge: simple-bridge: Add DPI color encoder support

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Message-ID: <fb7b9103-701d-4110-b2aa-b53c0e5c8d0a@nxp.com>
Date: Mon, 12 Jan 2026 17:44:58 +0800
From: Liu Ying <victor.liu@....com>
To: Francesco Dolcini <francesco@...cini.it>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, andrzej.hajda@...el.com, neil.armstrong@...aro.org,
 rfoss@...nel.org, Laurent.pinchart@...asonboard.com, jonas@...boo.se,
 jernej.skrabec@...il.com, maarten.lankhorst@...ux.intel.com,
 mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch
Subject: Re: [PATCH 0/5] drm/bridge: simple-bridge: Add DPI color encoder
 support



On 1/12/26 17:31, Francesco Dolcini wrote:
> Hello Liu,

Hello Francesco,

> 
> On Tue, Mar 04, 2025 at 06:15:25PM +0800, Liu Ying wrote:
>> This patch series aims to add DPI color encoder support as a simple DRM
>> bridge.  A DPI color encoder simply converts input DPI color coding to
>> output DPI color coding, like Adafruit Kippah DPI hat[1] which converts
>> input 18-bit pixel data to 24-bit pixel data(with 2 low padding bits in
>> every color component though).  A real use case is that NXP i.MX93 11x11
>> EVK[2] and i.MX93 9x9 QSB[3] boards may connect a 24-bit DPI panel through
>> the Adafruit Kippah DPI hat.  The display pipeline is
>>
>> i.MX93 LCDIF display controller(RGB888) ->
>> i.MX93 parallel display format configuration(RGB666) ->
>> on-board Raspiberry Pi compatible interface(RPi)(RGB666) ->
>> Adafruit Kippah DPI hat(RGB888 with 2 low padding bits in color components) ->
>> 24-bit "ontat,kd50g21-40nt-a1" DPI panel
> 
> 
> Any update/progress/plan on this patch series?

It seems that neither Rob nor Maxime likes the whole idea of this bridge.
So I don't have any plan to proceed with this patch series.

> 
> Thanks,
> Francesco
> 

-- 
Regards,
Liu Ying