From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3CA4A480955; Thu, 13 Aug 2026 18:49:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786647001; cv=none; b=Xzj9us3MpESdFZQHNEcLFN69awb/FVJKYWP5z4K2MciutZ6cipTORGsiMJCCMGpSkaBIMmCYZi7n2zivoAmzCtf8flgZLEluON4ZGJA0BuHxnjZqvQARQo9YbdRFItnroOQLjXR8OfecnkbI+SPE4qHA7N9/dSmgHyk/pKtmmD8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786647001; c=relaxed/simple; bh=N2tXyEP5k6siy2BStVXxZGhHfQNVOTkLt4pjp7m6PDE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=B2C7TbSdl4S4S0/Q3I0hmdTG1/FCg3rSzExIXfiRzBvkVVBZoQzyr+Uylbp1fXgdSFtr3B+v5GpPUqnRLjWYbNEpX6IZ6qX641sgjYepAsFo1l+kWehN9Hcp0zBWhrmCquU69PQhDZCKpfodVs1DDK3n9rj8keQhJQDx/CQ6J8w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=YkS6aTgA; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="YkS6aTgA" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1786646997; bh=N2tXyEP5k6siy2BStVXxZGhHfQNVOTkLt4pjp7m6PDE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=YkS6aTgAFuPqpi0u5/aB6g7a15Bilrqtg6musRFtx/4kw0wLutmPosTYiyebpbwXK D4SjwtqCGdGEYgot7Enpzx39nyhwHjnI4I6Ck4E2psL1rnl2W8EUbV/gbg9EO57Bk9 5w4aihJYMG5r+9QVyAUF6u4cOAlFG23dhgsuLfoP11l3Oli/tGFkKfmiEhRIjY0FqT iloV4uejjNmbKqiUd/ucjDoEXJDJuSz0pmSrrOcKosBhkaHmxpLH8RFgengBl7F49P Im14ke4nAsRVxlWBT628o28kpmPidzmkBhf7I2KC/Pq7hDNT/O7jZ8YxWpyFwIUc0q K1BInUr0PUmRw== Received: from [100.64.0.241] (unknown [100.64.0.241]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with ESMTPSA id D5C7E17E013E; Thu, 13 Aug 2026 20:49:56 +0200 (CEST) Message-ID: <7278a889-15a8-42f4-806e-7a28bc7d9495@collabora.com> Date: Thu, 13 Aug 2026 21:49:56 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 00/14] Support 10-bit YUV422 and 8/10-bit YUV420 color format on DW HDMI QP To: Igor Paunovic Cc: Sandy Huang , =?UTF-8?Q?Heiko_St=C3=BCbner?= , Andy Yan , Andy Yan , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , kernel@collabora.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260709-dw-hdmi-qp-yuv-v3-0-a4a982a9f2e7@collabora.com> <20260813164356.9625-1-royalnet026@gmail.com> Content-Language: en-US From: Cristian Ciocaltea In-Reply-To: <20260813164356.9625-1-royalnet026@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Igor, On 8/13/26 7:43 PM, Igor Paunovic wrote: > Hi Cristian, > > I tested this series on an RK3588 (Orange Pi 5 Plus) with a sink that > actually needs it: a Sony TV with a 256-byte HDMI 1.4 EDID -- max TMDS > clock 300 MHz, no HF-VSDB and no SCDC, and 4K above 30 Hz offered only > through the YCbCr 4:2:0 Video Data Block (VIC 96/97/101/102). Without > YUV420 output this display has had no 4K mode above 30 Hz on the > Rockchip HDMI path. > > Base: drm-misc-next dc2f9f7fed1a ("drm/komeda: Set display/writeback > clone masks"), with the dw-dp v11 and usbdp v13 series applied, plus > three local patches: board DT changes enabling USB-C DP Alt Mode and > pinning the VP2 dclk to V0PLL (DisplayPort side only; HDMI ran on VP0 > from the HDMI PHY PLL), and CLOCK_ALLOW_WRITE_DEBUGFS for unrelated > clock experiments. On top of that, the samsung-hdptx clock fixes v6 > [1] as the runtime dependency noted in your cover letter, That is indeed the most recent revision of the PHY fixes - the patches have already been applied (available since next-20260812), thereby unblocking this series. > then this series. > > Results on the HDMI-A-1 connector: > > - The connector now lists 3840x2160 at 60/59.94/50 and 4096x2160 at > 60/50 for the first time on this setup, and 3840x2160@60 shows a > stable picture. > > - The negotiated wire format matches expectations > (/sys/kernel/debug/dri/0/state): > > output_format=YUV 4:2:0 > output_bpc=8 > tmds_char_rate=297000000 > > and clk_summary agrees: clk_hdmiphy_pixel0 = dclk_vop0 = 297 MHz, > just under the sink's 300 MHz ceiling. > > - Cycling 60 -> 30 -> 60 -> 50 -> 60 re-synced cleanly every time, > with no errors in the kernel log and the VOP interrupt rate at the > expected per-frame values throughout (no underrun storms). > > To be explicit about the scope, three things were not covered: 10-bit > output in either format (this sink's 300 MHz TMDS limit rules out > 10-bit 4:2:0 at 4K, and my compositor cannot force an output format > to exercise 10-bit 4:2:2 -- I can retest with modetest from a console > if that would be useful), and the 4096-wide modes were only verified > in the mode list. > > For the series as tested above: > > Tested-by: Igor Paunovic Thanks for checking this out! Cristian