From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 544213B14A5; Fri, 11 Sep 2026 07:07:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789110445; cv=none; b=kysX63I2MDDmA5XyRi8q+59upKMMYnFG489R9FGMa7zBCLLPA2IL/qWRMmYa3dPUD/YxpdH08GRfCI6lgAxsSU34K6EhmfGGQsUeAbHn71aLk61v6U/vAG7yNGX+I4pWV+WGkpLt0ck5kn0quAuwTwXHwo8n9tJuAo31cNLw+Po= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789110445; c=relaxed/simple; bh=/r+7JOA1R6vkpZwZjiLfITCVpMqEL7ms+Lgs78wkPK8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=a7AKVUpb45jbJhvgrtHHh3CP2NsS/pxhnA+gfC0gBhCPgZqy0ymP+sq3kFcggBTPMZj+i5GQ4bv+LeJvxzFUt/GSJ4ELhBZxdzaxaMpQJ9Qq876vPVKfIUfCGzdFp8Y6ziS0T+fVktk76Kj6QTOfbOO7TdEdmPBsrmXas4AmIGE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=tOqrpcJ8; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="tOqrpcJ8" Received: from [192.168.88.20] (91-158-153-178.elisa-laajakaista.fi [91.158.153.178]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 489A963C; Fri, 11 Sep 2026 09:05:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1789110333; bh=/r+7JOA1R6vkpZwZjiLfITCVpMqEL7ms+Lgs78wkPK8=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=tOqrpcJ8PBOOuBIl5zseKneF37qtHkReKhqPNfjXPhAF0e7JFXjBd0KTXKhDo9dVx LzoTmcIX/O/WSdKITbBP/MT600p1PqMHGTmMLDt1U2CwoVhd8DvpqLjHPCU0Q4ezkP 83vaa96Laiby10Z05/DnnsiRvMeHTXpO7PIUkX0E= Message-ID: <2489cf57-65f1-4502-86ae-1e3673899b87@ideasonboard.com> Date: Fri, 11 Sep 2026 10:07:07 +0300 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 0/6] drm/rcar-du: Add support for DSI pipelines with DSC To: Geert Uytterhoeven , Michael Turquette , Stephen Boyd , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Magnus Damm , Marek Vasut , Laurent Pinchart , Kieran Bingham , Philipp Zabel Cc: linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Conor Dooley References: <20260907-rcar-du-dsc-v6-0-f8ef711a7494@ideasonboard.com> From: Tomi Valkeinen Content-Language: en-US In-Reply-To: <20260907-rcar-du-dsc-v6-0-f8ef711a7494@ideasonboard.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi, On 07/09/2026 12:29, Tomi Valkeinen wrote: > Some DSI pipelines have DSC (Display Stream Compression) IP block > between the DU and the DSI. Even if DSC is not needed, the IP must be > enabled for the DSI output to work. > > This series adds a basic DSC driver, so that the DSC IP gets enabled in > bypass mode. This enables DisplayPort output on Sparrow Hawk board, as > the DP output comes from DSI and sn65dsi86 bridge, and also White Hawk > board's second mini-DP output. > > Original series from Marek. > > Note: I see that not every run of kms++'s kmstest gives me a picture on > my monitor. Sometimes the monitor seems to be trying to repeatedly sync, > but fails, and the screen stays black. However, I see this same issue on > WhiteHawk, which uses DSI0 pipeline, without DSC, so I think that is a > separate issue. Pushed the first three patches to drm-misc-next. I'll leave the dts ones to Geert. Tomi