From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Andrzej Hajda <andrzej.hajda@intel.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Robert Foss <rfoss@kernel.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Magnus Damm <magnus.damm@gmail.com>,
Marek Vasut <marek.vasut+renesas@mailbox.org>,
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
Philipp Zabel <p.zabel@pengutronix.de>
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 <conor.dooley@microchip.com>
Subject: Re: [PATCH v6 0/6] drm/rcar-du: Add support for DSI pipelines with DSC
Date: Fri, 11 Sep 2026 10:07:07 +0300 [thread overview]
Message-ID: <2489cf57-65f1-4502-86ae-1e3673899b87@ideasonboard.com> (raw)
In-Reply-To: <20260907-rcar-du-dsc-v6-0-f8ef711a7494@ideasonboard.com>
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
next prev parent reply other threads:[~2026-09-11 7:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-07 9:29 [PATCH v6 0/6] drm/rcar-du: Add support for DSI pipelines with DSC Tomi Valkeinen
2026-09-07 9:29 ` [PATCH v6 1/6] dt-bindings: display: bridge: Document Renesas R-Car V4H DSC bindings Tomi Valkeinen
2026-09-07 9:29 ` [PATCH v6 2/6] drm/rcar-du: dsc: Add rudimentary Renesas R-Car V4H DSC driver Tomi Valkeinen
2026-09-07 9:42 ` sashiko-bot
2026-09-07 9:29 ` [PATCH v6 3/6] drm/rcar-du: dsi: Support DSC in the pipeline Tomi Valkeinen
2026-09-07 9:44 ` sashiko-bot
2026-09-07 9:29 ` [PATCH v6 4/6] arm64: dts: renesas: r8a779g0: Add DSC Tomi Valkeinen
2026-09-08 12:11 ` Geert Uytterhoeven
2026-09-07 9:29 ` [PATCH v6 5/6] arm64: dts: renesas: sparrow-hawk: Enable DisplayPort by adding DSC Tomi Valkeinen
2026-09-07 9:43 ` sashiko-bot
2026-09-08 12:16 ` Geert Uytterhoeven
2026-09-07 9:29 ` [PATCH v6 6/6] arm64: dts: renesas: white-hawk: Add second mini-DP output support Tomi Valkeinen
2026-09-11 7:07 ` Tomi Valkeinen [this message]
2026-09-14 8:04 ` [PATCH v6 0/6] drm/rcar-du: Add support for DSI pipelines with DSC Geert Uytterhoeven
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