From: Marek Vasut <marex@nabladev.com>
To: Marco Felsch <m.felsch@pengutronix.de>, Liu Ying <victor.liu@nxp.com>
Cc: 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>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Marek Vasut <marex@denx.de>,
Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dt-bindings: display: bridge: ldb: Require reg property only for i.MX6SX/8MP LDBs
Date: Sun, 29 Mar 2026 20:29:56 +0200 [thread overview]
Message-ID: <0d7c7403-4b77-42f3-82d6-eaf2be8e5b1e@nabladev.com> (raw)
In-Reply-To: <crqzju5cqhvmy5msxvuquydmnpb2ft2t3gsyr6qsre6ccqjvzz@46gfcrelczsr>
On 3/29/26 7:42 PM, Marco Felsch wrote:
Hello Marco,
> sorry for not writting back earlier, the last weeks were quite busy.
Tell me about it ...
> On 26-03-29, Liu Ying wrote:
>> LDB's parent device could be a syscon which doesn't allow a reg property
>> to be present in it's child devices, e.g., NXP i.MX93 Media blk-ctrl
>> has a child device NXP i.MX93 Parallel Display Format Configuration(PDFC)
>> without a reg property(LDB is also a child device of the Media blk-ctrl).
>> To make the LDB schema be able to describe LDBs without the reg property
>> like i.MX93 LDB, require the reg property only for i.MX6SX/8MP LDBs.
>
> NACK, we want to describe the HW and from HW PoV the LDB is and was
> always part of a syscon. This is the case for all SoCs i.MX6SX/8MP/93.
>
>> Fixes: 8aa2f0ac08d3 ("dt-bindings: display: bridge: ldb: Add check for reg and reg-names")
>
> Therefore I would just revert this patch completely.
Last time, I pointed out the hardware is part of syscon, but as a
subnode and therefore with reg properties. What is the problem there ?
next prev parent reply other threads:[~2026-03-29 18:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-29 7:51 [PATCH] dt-bindings: display: bridge: ldb: Require reg property only for i.MX6SX/8MP LDBs Liu Ying
2026-03-29 17:42 ` Marco Felsch
2026-03-29 18:29 ` Marek Vasut [this message]
2026-03-30 6:29 ` Marco Felsch
2026-03-30 23:22 ` Marek Vasut
2026-04-16 10:20 ` Laurentiu Palcu
2026-04-30 9:56 ` Liu Ying
2026-03-30 2:05 ` Liu Ying
2026-03-30 10:28 ` Marco Felsch
2026-03-31 2:01 ` Liu Ying
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