linux-kernel - Re: [PATCH v7 4/6] media: platform: synopsys: Add support for HDMI input driver

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Message-ID: <e3c9d3b4-cf78-473e-8520-79dbf932fbe1@collabora.com>
Date: Thu, 20 Feb 2025 15:53:08 +0300
From: Dmitry Osipenko <dmitry.osipenko@...labora.com>
To: Hans Verkuil <hverkuil@...all.nl>,
 Shreeya Patel <shreeya.patel@...labora.com>, Heiko Stuebner
 <heiko@...ech.de>, Mauro Carvalho Chehab <mchehab@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, jose.abreu@...opsys.com,
 nelson.costa@...opsys.com, shawn.wen@...k-chips.com,
 nicolas.dufresne@...labora.com,
 Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: kernel@...labora.com, linux-media@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-rockchip@...ts.infradead.org, Tim Surber <me@...surber.de>
Subject: Re: [PATCH v7 4/6] media: platform: synopsys: Add support for HDMI
 input driver

On 2/20/25 10:03, Hans Verkuil wrote:
>> Good catch. Hardware supports 4 EDID blocks, will change in v8.
> Ah, good. Make sure you test this, both writing 4 blocks to it and read it
> from a transmitter. With v4l2-ctl --set-edid type=displayport-with-cta861
> sets 3 blocks, and type=hdmi-4k-600mhz-with-displayid sets 4 blocks. So test
> with both variants.

Tested it yesterday with reading 4 blocks from transmitter, worked fine.

The HPD change also works well with the preliminary testing.

-- 
Best regards,
Dmitry