From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 EEE12383991; Thu, 3 Sep 2026 13:41:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788442891; cv=none; b=SHZXwlDd4SeKiotgSB9BGZ+PaF9GSOMIJpIHaGyHaszcfLA2imVoNTexWD1TdiUk/qgISX2C6h7U3HcW8Ur5Y6vIjeM5wd8QOk9F88AdIOyAOqnDM/FWOk24MjJCcs0aLX2eyVooTomJnMXHF0smKO81JmO9bQVewAmGMiLm2hc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788442891; c=relaxed/simple; bh=7pRROOdHtyRIESuA4cQGRlfSWM8ve16qY7jlkowG1w0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=RuMWA48ajrVj8shJSTTWeREUq4pr4Vpj6PCCmVhavQdiRNRsIRfCx4PunFZmhySPHt8U+bTveQpMBlB2tRklClk/tqUeDW3bhwQzHlyMLEwpRMSUMuI6lqNrRO5VH3wOn7WGXUVHo/JnjdGMCCJtRlgxFmoAhbEH+LDXItbi34M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oNt6g5Ta; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="oNt6g5Ta" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A868A1F000E9; Thu, 3 Sep 2026 13:41:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788442879; bh=kFvZWT/OUUzeMqSSgVtf6sqt5zDZQ2VdnfM6WeaS3IY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=oNt6g5TaldbvnOrcAcM8G3od0vg1//utaZr43m/Yi3w+QwEzaYRDQ5gfC7Ly1CXFS qT7GSoRjjLpCCrFAJdgO9zxFuxqPj8RsiGaWduGIUrHfa7mKX5+PjOZmNhKz9LdNXZ Sxe7Q9riU7vGXokMAe5s9bmE9T9fs8BcMWLIzxbIfWoTqzaSSfYDVBIbVfD64JcVVX sALm1armQY0U8hJWEt3TR/ov4qrpSzWap2XhCxxv2cMaGrdERiPUNZTdKpJD/12ZFB vVozSsBaD8MKMhs09QOYfzdO0IWkRk4Fy0ciBJdeJgzBiCE/RTl1HwB8KVFPvC29nZ 5c9DqQAomyiVw== Date: Thu, 3 Sep 2026 15:41:15 +0200 From: Maxime Ripard To: Liu Ying Cc: Francesco Dolcini , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, p.zabel@pengutronix.de, airlied@gmail.com, simona@ffwll.ch, maarten.lankhorst@linux.intel.com, tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, tglx@linutronix.de, vkoul@kernel.org, kishon@kernel.org, Frank.Li@nxp.com, lumag@kernel.org, aisheng.dong@nxp.com, agx@sigxcpu.org, u.kleine-koenig@baylibre.com, marek.vasut@mailbox.org Subject: Re: [PATCH v9 00/19] Add Freescale i.MX8qxp Display Controller support Message-ID: References: <20250414035028.1561475-1-victor.liu@nxp.com> <20260714193627.GA9616@francesco-nb> <20260716062612.GC9973@francesco-nb> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha384; protocol="application/pgp-signature"; boundary="o4ooto37lrg6lqir" Content-Disposition: inline In-Reply-To: --o4ooto37lrg6lqir Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH v9 00/19] Add Freescale i.MX8qxp Display Controller support MIME-Version: 1.0 On Thu, Jul 16, 2026 at 02:49:14PM +0800, Liu Ying wrote: > On Thu, Jul 16, 2026 at 08:26:12AM +0200, Francesco Dolcini wrote: > > On Thu, Jul 16, 2026 at 02:21:31PM +0800, Liu Ying wrote: > > > On Tue, Jul 14, 2026 at 09:36:27PM +0200, Francesco Dolcini wrote: > > > > On Mon, Apr 14, 2025 at 11:50:09AM +0800, Liu Ying wrote: > > > > > Hi, > > > > >=20 > > > > > This patch series aims to add Freescale i.MX8qxp Display Controll= er support. > > > > >=20 > > > > > The controller is comprised of three main components that include= a blit > > > > > engine for 2D graphics accelerations, display controller for disp= lay output > > > > > processing, as well as a command sequencer. > > > >=20 > > > > ... > > > >=20 > > > > >=20 > > > > > To follow up i.MX8qxp TRM, I changed the controller name to "Disp= lay Controller" > > > > > instead of the previous "DPU". "DPU" is only mentioned in the So= C block > > > > > diagram and represents the whole display subsystem which includes= the display > > > > > controller and prefech engines, etc. > > > > >=20 > > > > > With an additional patch[1] for simple-pm-bus.c, this series faci= litates > > > > > testing a LVDS panel on i.MX8qxp MEK. > > > > >=20 > > > > > Please do NOT merge patch 14-19. They are only used to facilitat= e testing > > > > > the LVDS panel. > > > >=20 > > > > What's the plan to conclude this work? What's the latest status? > > > > I am looking forward to have a way to use the i.MX8QXP display with > > > > mainline, but to my understanding some required changes on the SOC = dtsi > > > > are not merged. > > > >=20 > > > > Can you help? > > >=20 > > > I planned to add display controller DT node after prefetch engine sup= port [1] > > > is picked up so that the prefetch engine could be enabled together wi= th the > > > display controller. Just want to avoid a DT that only enables the di= splay > > > controller or bypasses the prefetch engine. It makes the display con= troller > > > driver simpler. > > >=20 > > > [1] https://lore.kernel.org/all/20251027-imx8-dc-prefetch-v5-0-4ecb6c= 6d4941@nxp.com/ > >=20 > > That series is from October 2025, is there anything blocking to move it > > forward? >=20 > It lacks a Reviewed-by tag(at least a Acked-by tag) from a drm-misc commi= tter > for every driver patch in that series. Also, it seems that Marek(Cc'ed) = is > not a big fan of [1](See i.MX95 display support discussion[2]). I was just pointed at this series, and I'm not sure why it's blocked. It looks like you were waiting for a Reviewed-by by a drm-misc maintainer, but I gave mine already and I'm a drm-misc maintainer, sooo... :) Maxime --o4ooto37lrg6lqir Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iJUEABMJAB0WIQTkHFbLp4ejekA/qfgnX84Zoj2+dgUCapl4+wAKCRAnX84Zoj2+ due1AYCLc2tJQwDF9c4iRI/++4KTTdF3kVz0NHVdo8/5oeYCWXx8fVEF7hVkt4Ra wo5XQHsBgOtcOEuQUzP9eFI6ZXk4Osh1GNXCdmzBpFn3otlHi4Jyo0MDwTymjy9b xyO5RX/Wgw== =aO6C -----END PGP SIGNATURE----- --o4ooto37lrg6lqir--