From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E40BAC61DD6 for ; Wed, 2 Sep 2026 18:01:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jXYNobdVsuK2ipdiyYhs8Xo2vpnw68oVO9etWQ0Zmlc=; b=05aCEkiXX/dhWUnXa2NEef0TXt vPMjenpt+BImhvdV5LwDM5JwCyD/dPIeAaTqOo7WoheXUpnx9yhZjZHK7L8BK7TVWEgCynSyo7GSB 9KMBoYqZwoMFBNb9tV0/hCidxa5ofOtyhO/fhd1hTCu0bWZNiVDRIma+EcwUrha1MHfqbnrP5gnDf 8//P4Ehn7GZ6xiDEeY2qEHkQiFUp24YRQLhS8S46YnjoHnwtUw8vK7MTtYTIaSs1vuvYCYamrVtAU AmJoVFrA/KhmxHkJs78vt6C1nh+Oq59tq5qPT6XFAkq/1JFj4z5Je+LnyRYklV7x0+qNvMXzrzMoY nLAxWloA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x1pGf-0000000FWol-0Okx; Wed, 02 Sep 2026 18:01:01 +0000 Received: from bali.collaboradmins.com ([148.251.105.195]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x1pGd-0000000FWnL-0d1v; Wed, 02 Sep 2026 18:01:00 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1788372054; bh=RFGuLr+hSZX4q95E8FmOb9I0Oj/VY5jMv/JY+fIYb70=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=kM8qFYh5ALIzTeH3UbstMxl+7wLpe4Bu2oDWFRouwXe8W1lQ2GcXh+oO+gqLoidmZ HQMSqjKsWcNXbvTSuuxlb1faCUJMb8G8Q2KjH+S5nlOxiyhKfua21QDEf3ybTPMDn/ 3kJolpG+4VJaUhI1Prg5LGUz+oDvMBVHfkRpy3tPaE4Oc2xDfbl3QO4+RJPRPqQXJx E+FrN7SHhoB92fRWYYh9euh+0JLQRU4+nvzQNDFtaktWHWuZv56boO33PhpQou+Bnp oJwFxRsjPWxC2hXEzrUrOBvYHt84IFXkSAraUfM8Nohm2jmh7IyExwzXcC9rsQspUj tbeVQmjFUg3PA== 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 C7E3417E0260; Wed, 02 Sep 2026 20:00:53 +0200 (CEST) Message-ID: Date: Wed, 2 Sep 2026 21:00:53 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 00/74] Add HDMI 2.0 support to DW HDMI QP TX To: Igor Paunovic Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , Dmitry Baryshkov , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Chen-Yu Tsai , Samuel Holland , mcanal@igalia.com, Raspberry Pi Kernel Maintenance , Raphael Gallais-Pou , Sandy Huang , Heiko Stuebner , Andy Yan , Algea Cao , Daniel Stone , Liu Ying , Phong LE , Helge Deller , kernel@collabora.com, Dmitry Baryshkov , Diederik de Haas , Maud Spierings , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20260901-dw-hdmi-qp-scramb-v11-0-bc12954a0688@collabora.com> <20260902152838.5771-1-royalnet026@gmail.com> Content-Language: en-US From: Cristian Ciocaltea In-Reply-To: <20260902152838.5771-1-royalnet026@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260902_110059_348459_F20BFABB X-CRM114-Status: GOOD ( 19.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Igor, On 9/2/26 6:28 PM, Igor Paunovic wrote: > Hi Cristian, > >> This has been tested on the following boards: > > One more, with a sink pair your boards cannot cover: > > Tested-by: Igor Paunovic # RK3588 Orange Pi 5 Plus, dual HDMI > > Setup: whole v11 on its stated base (drm-misc-next 47b823940e38), > both SoC HDMI ports driven at once: a Samsung with HF-VSDB (max > TMDS character rate 600 MHz, SCDC present) and a Sony limited to > 300 MHz TMDS. > > 1) HDMI 2.0 path: the Samsung now offers and runs 3840x2160@60 RGB > with a 594 MHz pixel clock (modetest-confirmed). Without the > series the same port tops out at 4K@30. A stable picture at > 594 MHz is only possible with scrambling and the 1/40 TMDS ratio > active; it stayed stable across boot, mode changes and hotplug. > > 2) Non-2.0 fallback: the Sony keeps its 297 MHz 4K@30 modes. > No regression. > > 3) The result I care most about: this Sony in standby keeps EDID/5V > up but drops the link, and on my 7.2 stack that generates a > storm of detect/modeset cycles - measured 119-194 per hour, > enough to make the desktop stutter. On v11, twenty minutes of > standby produced ZERO events, and wake restored both sinks by > itself. Whatever share of that the cached-status detect and the > SCDC-loss handling each take - thank you. > > 4) Hotplug on both ports: clean detach and reattach, no storms. > > 5) Audio on a dead link: this morning my 7.2 stack took an SError > panic (regmap read in dw_hdmi_qp_bridge_clear_audio_infoframe > when a PCM was closed on a link whose SCDC never came up - full > UART trace available if useful). On v11 I could not reproduce > the class: six open/close cycles against the standby sink plus > one natural prepare-failure-then-close during replug all > survived cleanly. Caveat: different base kernels, so this is > not a clean A/B on the series alone. Thanks for the detailed testing report! > Scope: RGB output only (the YUV420 output series is separate), no > USB-C DP on this base, VC4 side not exercised. I will manually apply your T-b on the relevant patches before submitting a new revision. Cristian