linux-kernel - Re: [PATCH 0/2] i.MX91/93 parallel display bridge

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Message-ID: <fee8efaf-38e1-4dc1-af51-e8e0f70f15ec@nxp.com>
Date: Wed, 12 Feb 2025 11:26:16 +0800
From: Liu Ying <victor.liu@....com>
To: Alexander Stein <alexander.stein@...tq-group.com>,
 Andrzej Hajda <andrzej.hajda@...el.com>,
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>,
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] i.MX91/93 parallel display bridge

On 02/11/2025, Alexander Stein wrote:
> Hi,

Hi Alexander,

> 
> i.MX91/93 support a parallel display interface. There is a single register
> for configuring the output format. There is not much documentation, but
> apparently this does some internal conversion.
> Add a bridge driver (similar to fsl-ldb.c) for connecting a bridge/panel
> to lcdif.
> I'm a bit unsure about the name. There is no dedicated IP, according to
> reference manual, just that single register. I would also agree
> to imx9-dpi or imx93-dpi.
> Note: It's only applicable to i.MX91/93, but not i.MX95!
> 
> Tested on TQMa9352 on MBa91xxCA
> 
> Best regards,
> Alexander
> 
> Alexander Stein (2):
>   dt-bindings: display: bridge: ldb: Implement simple Freescale
>     i.MX91/93 DPI bridge
>   drm: bridge: imx9-parallel-disp-fmt: add i.MX91/93 parallel display
>     bridge
> 
>  .../bridge/fsl,imx9-parallel-disp-fmt.yaml    |  78 +++++++
>  drivers/gpu/drm/bridge/Kconfig                |  10 +
>  drivers/gpu/drm/bridge/Makefile               |   1 +
>  .../gpu/drm/bridge/imx9-parallel-disp-fmt.c   | 213 ++++++++++++++++++
>  4 files changed, 302 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx9-parallel-disp-fmt.yaml
>  create mode 100644 drivers/gpu/drm/bridge/imx9-parallel-disp-fmt.c
> 

Thanks for your patch series.  However, I have already sent a patch series[1]
to add the i.MX93 parallel display format configuration support.  I may send
a new version to rename .remove_new to .remove in the bridge driver at least.

[1] https://patchwork.freedesktop.org/series/113457/

-- 
Regards,
Liu Ying