From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 42B9E346AF5 for ; Tue, 13 Jan 2026 11:31:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768303915; cv=none; b=BzS76kHKRQWioWBEev9LfKDBYPE5icrdrzfa3Z+K1OLqjCaihxND0hITF7S9Me5fnl5FlhUSst74FR1MYNWLHE62+6OAKmFRY3VsQJko/NJQVYeyz9KCQjPmF1vOt9pw2x58oFaTkJFJm5Nz747O/hoRGPJZgwk13fLaB2d3xas= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768303915; c=relaxed/simple; bh=B4kWBn9gjdvScHFjE+y4UkWXcGn5pKA7zE+7suaO1v0=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=Hj85qwSq8CGnrXQMx7zJ5/tgf+9n/26cIYyvJKr/ScIYa7jdHoG+OJ7GlmCy22oms3N+ycLfjp3/2b52DTrETxj1FumN0pktKxUsZnmYSOEWUHKY7xvtYl22WlrYra7KcnZoUcEaJGP/RwOgo1KcOFCQb/G1j0LBjkJF8auKTkg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vfccf-0008LF-8r; Tue, 13 Jan 2026 12:31:41 +0100 Received: from lupine.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::4e] helo=lupine) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vfccf-000Pj3-1h; Tue, 13 Jan 2026 12:31:40 +0100 Received: from pza by lupine with local (Exim 4.98.2) (envelope-from ) id 1vfccZ-000000005PZ-3ACz; Tue, 13 Jan 2026 12:31:35 +0100 Message-ID: <0d3a41526ba02eee28457fafc95f5152a9c7bb4b.camel@pengutronix.de> Subject: Re: [PATCH] drm/imx: parallel-display: Prefer bus format set via legacy "interface-pix-fmt" DT property From: Philipp Zabel To: Marek Vasut , dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org, David Airlie , Fabio Estevam , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Simona Vetter , Thomas Zimmermann , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Date: Tue, 13 Jan 2026 12:31:35 +0100 In-Reply-To: <20260110171510.692666-1-marex@nabladev.com> References: <20260110171510.692666-1-marex@nabladev.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2-0+deb13u1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org On Sa, 2026-01-10 at 18:14 +0100, Marek Vasut wrote: > Prefer bus format set via legacy "interface-pix-fmt" DT property > over panel bus format. This is necessary to retain support for > DTs which configure the IPUv3 parallel output as 24bit DPI, but > connect 18bit DPI panels to it with hardware swizzling. > > This used to work up to Linux 6.12, but stopped working in 6.13, > reinstate the behavior to support old DTs. >=20 > Cc: stable@vger.kernel.org > Fixes: 5f6e56d3319d ("drm/imx: parallel-display: switch to drm_panel_brid= ge") > Signed-off-by: Marek Vasut Reviewed-by: Philipp Zabel regards Philipp