linux-kernel - Re: [PATCH v4 4/4] media: platform: synopsys: Add support for hdmi input driver

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Message-ID: <40099a01-cac2-4b65-bb96-3dfdb106a4eb@collabora.com>
Date: Tue, 24 Sep 2024 01:36:27 +0300
From: Dmitry Osipenko <dmitry.osipenko@...labora.com>
To: Hans Verkuil <hverkuil@...all.nl>,
 Shreeya Patel <shreeya.patel@...labora.com>, heiko@...ech.de,
 mchehab@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
 p.zabel@...gutronix.de, jose.abreu@...opsys.com, nelson.costa@...opsys.com,
 shawn.wen@...k-chips.com, nicolas.dufresne@...labora.com,
 hverkuil-cisco@...all.nl
Cc: kernel@...labora.com, linux-kernel@...r.kernel.org,
 linux-media@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v4 4/4] media: platform: synopsys: Add support for hdmi
 input driver

On 7/23/24 11:48, Hans Verkuil wrote:
>> +	val = hdmirx_readl(hdmirx_dev, DMA_STATUS11);
>> +	field_type = (val & HDMIRX_TYPE_MASK) >> 7;
>> +	hdmirx_get_pix_fmt(hdmirx_dev);
> Hold on, this changes the pixel format based on the detected video format.
> Does that mean this hardware does not have a colorspace conversion block?
> All the HDMI receiver hardware I have seen always had a CSC matrix and
> could convert between 4:4:4, 4:2:2 and 4:2:0.

TRM doesn't mention that CSC is supported.

-- 
Best regards,
Dmitry