Subject: Re: [PATCH v2 1/2] drm: bridge: dw-hdmi: Take input format from
 plat_data
To: Neil Armstrong <narmstrong@baylibre.com>,
        Jose Abreu <Jose.Abreu@synopsys.com>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
References: <1488468572-31971-1-git-send-email-narmstrong@baylibre.com>
 <1488468572-31971-2-git-send-email-narmstrong@baylibre.com>
 <2768953.c6tz7qsbuQ@avalon>
 <0ae7ae64-13ad-6691-ada7-7c8f2851b517@baylibre.com>
 <3898e9a2-a751-abe4-fc31-7de18682c5da@synopsys.com>
 <7ec0d5dc-a09d-2790-34db-669e87c89fa3@baylibre.com>
CC: <dri-devel@lists.freedesktop.org>,
        <laurent.pinchart+renesas@ideasonboard.com>,
        <kieran.bingham@ideasonboard.com>, <linux-amlogic@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
From: Jose Abreu <Jose.Abreu@synopsys.com>
Message-ID: <3cadc66c-9ca8-5658-0023-45ad68ca5939@synopsys.com>
Date: Fri, 3 Mar 2017 17:22:19 +0000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <7ec0d5dc-a09d-2790-34db-669e87c89fa3@baylibre.com>
Content-Type: text/plain; charset="windows-1252"
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 750
Lines: 27

Hi Neil,


On 03-03-2017 16:42, Neil Armstrong wrote:
>
> Sure, I was meaning the *input* format the controller receives from the
> pixel encoder, I'm quite sure the format is strict.
>

Hmm, not quite following you here. As far as the controller goes
it supports the formats I mentioned:
    -    8/10/12/16 bits RGB 4:4:4
    -    8/10/12/16 bits YCbCr 4:4:4
    -    8/10/12 bits YCbCr 4:2:2
    -    8/10/12/16 bits YCbCr 4:2:0

As for the CSC it supports RGB 4:4:4 to/from YCbCr 4:4:4 or 4:2:2
in every defined color depth.

So, everything except 4:2:0 (I had to check documentation, I
though that CSC supported less formats).

Of course this is all limited by the implementation that HW team
decides to choose.

Best regards,
Jose Miguel Abreu