linux-kernel - Re: [PATCH RFC 00/13] drm: starfive: jh7110: Enable display subsystem

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Message-ID: <00e897dc-9966-439b-a74a-7604a1870027@samsung.com>
Date: Tue, 11 Nov 2025 16:33:28 +0100
From: Michal Wilczynski <m.wilczynski@...sung.com>
To: Conor Dooley <conor@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Emil Renner Berthing <kernel@...il.dk>, Hal Feng
	<hal.feng@...rfivetech.com>, Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Xingyu
	Wu <xingyu.wu@...rfivetech.com>, Vinod Koul <vkoul@...nel.org>, Kishon Vijay
	Abraham I <kishon@...nel.org>, Andrzej Hajda <andrzej.hajda@...el.com>, Neil
	Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>, Jonas Karlman
	<jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, Lee Jones <lee@...nel.org>, Philipp
	Zabel <p.zabel@...gutronix.de>, Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>, Marek Szyprowski
	<m.szyprowski@...sung.com>, Icenowy Zheng <uwu@...nowy.me>, Maud Spierings
	<maudspierings@...ontroll.com>, Andy Yan <andyshrk@....com>, Heiko Stuebner
	<heiko@...ech.de>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org, linux-phy@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH RFC 00/13] drm: starfive: jh7110: Enable display
 subsystem



On 11/10/25 20:35, Conor Dooley wrote:
> On Sat, Nov 08, 2025 at 02:04:34AM +0100, Michal Wilczynski wrote:
>> This series enables the display subsystem on the StarFive JH7110 SoC.
>> This hardware has a complex set of dependencies that this series aims to
>> solve.
>>
>> I believe this is a PHY tuning issue that can be fixed in the new
>> phy-jh7110-inno-hdmi.c driver without changing the overall architecture.
>> I plan to continue debugging these modes and will submit follow up fixes
>> as needed.
>>
>> The core architectural plumbing is sound and ready for review.
>>
>> Notes:
>> - The JH7110 does not have a centralized MAINTAINERS entry like the
>>   TH1520, and driver maintainership seems fragmented. I have therefore
>>   added a MAINTAINERS entry for the display subsystem and am willing to
>>   help with its maintenance.
> 
> Yeah, bunch of different folks wrote the drivers, so lots of entries.
> Pretty much all as you've done here, authors are responsible for the
> individual components and Emil is the platform maintainer but
> responsible for most drivers.
> 
> Do you need any feedback dt wise on the RFC, or is it too likely that
> we'll both waste our breath if the DRM folks don't approve of your
> approach for the rest of this series?

Hi Conor,

Thank you for your response.

That's a fair point about the risk of the DRM approach being rejected.
While I can't be certain, I'm hopeful that part is relatively
straightforward, as it primarily integrates other recently reviewed
(though not yet merged) components like the inno-hdmi bridge and dc8200
drivers.

To be honest, I was more concerned that the DT part of the series would
be more problematic. Given that, I would find it very helpful to get
your feedback on the DT aspects now, if you have the time.

Best regards,
-- 
Michal Wilczynski <m.wilczynski@...sung.com>