From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 11242C44512 for ; Thu, 16 Jul 2026 06:26:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+AAfvQ3AHsbv/kt3QsED9YQKl5NA1BJ+G8SABeq7dW4=; b=YJlI7/q0zGI0rR CWTmZSO5ZFpfvg2b1jz7oM4C705hVbjqT3ikMhIfTa+fRF4ZoDLktoE7vOHQcB9w+R2S6A2aoz3Lp gB2MlZpKXLAY3uJjS0utw+URRjyQaXHhy2bfZnvnf6WHfY+Csiu24ef4+pS3P/rEyL53VSwXwJC/J ZWX+Fff+E+EVI3fwT4bif8raCBNnLpEo0soOpjjmhsZgNBmajJuZr0mT7b7gfjVM9vE4GOoHt+RGF i+ykB/jDiey5j3WlY20evxf7EX6u26tnYQ6degnzv8OHZx2z4UuKwFTp0Ul82lN21dagx+9Awoju3 xRW1L8gL50PL0TMIhkGA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wkFY8-0000000GXOo-2m7Z; Thu, 16 Jul 2026 06:26:24 +0000 Received: from mail11.truemail.it ([217.194.8.81]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wkFY5-0000000GXO2-2yzo; Thu, 16 Jul 2026 06:26:23 +0000 Received: from francesco-nb (xcpe-178-82-120-96.dyn.res.sunrise.net [178.82.120.96]) by mail11.truemail.it (Postfix) with ESMTPA id 2FFDD22924; Thu, 16 Jul 2026 08:26:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1784183175; bh=9HXub2A/v9RqkMGdUZjtbYvqdoMeY8h65+2Qb929duA=; h=From:To:Subject; b=bZOBe5XorgczVLTaof+93M63kt1XlmU6uiFSMKAQUgg621TOnz+SJG/NQw5T45d33 GI6nEOo8+pDX386o30SG2efdoiTBf4lm7hBti/iYxN76A10we1SmKNKX4YjT4xsH0y cl/41EFgXjuXG9MG5P0vziDFjuuK+HQzYKQuc3k6x9Njd5jiNNpgsFh5af2cgjslGP /q7G6Go4nQAWhdzcrTmdEnAz3KJrVIqJFGyf48JfeXI+4VfCFcYzv5OXWQHc9M3mj1 8G8gMzSIMaYQoya/zjQjnvlXpav11aQO6GfZd4oVJkC1PPOqb1xyVnIwYpnAlg5s6N zyZN/MwGRLyWQ== Date: Thu, 16 Jul 2026 08:26:12 +0200 From: Francesco Dolcini 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, mripard@kernel.org, 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, dmitry.baryshkov@linaro.org Subject: Re: [PATCH v9 00/19] Add Freescale i.MX8qxp Display Controller support Message-ID: <20260716062612.GC9973@francesco-nb> References: <20250414035028.1561475-1-victor.liu@nxp.com> <20260714193627.GA9616@francesco-nb> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260715_232621_912671_5107E540 X-CRM114-Status: GOOD ( 23.86 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org 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, > > > > > > This patch series aims to add Freescale i.MX8qxp Display Controller support. > > > > > > The controller is comprised of three main components that include a blit > > > engine for 2D graphics accelerations, display controller for display output > > > processing, as well as a command sequencer. > > > > ... > > > > > > > > To follow up i.MX8qxp TRM, I changed the controller name to "Display Controller" > > > instead of the previous "DPU". "DPU" is only mentioned in the SoC block > > > diagram and represents the whole display subsystem which includes the display > > > controller and prefech engines, etc. > > > > > > With an additional patch[1] for simple-pm-bus.c, this series facilitates > > > testing a LVDS panel on i.MX8qxp MEK. > > > > > > Please do NOT merge patch 14-19. They are only used to facilitate testing > > > the LVDS panel. > > > > 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. > > > > Can you help? > > I planned to add display controller DT node after prefetch engine support [1] > is picked up so that the prefetch engine could be enabled together with the > display controller. Just want to avoid a DT that only enables the display > controller or bypasses the prefetch engine. It makes the display controller > driver simpler. > > [1] https://lore.kernel.org/all/20251027-imx8-dc-prefetch-v5-0-4ecb6c6d4941@nxp.com/ That series is from October 2025, is there anything blocking to move it forward? Francesco -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9032BC44501 for ; Thu, 16 Jul 2026 06:26:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=9HXub2A/v9RqkMGdUZjtbYvqdoMeY8h65+2Qb929duA=; b=ioo9Z+DzQtwfgcW/p3RoW5Fo29 BDhsGN8KqT6ZvNYnAzGjCR8hr3JFFiiH8IO75Mz3YrxVXfyzMD1cODWi1uiFR+63+beC+0xBgtq4U 8YyEZDblkiNEMifH6FR+kybTBikTIES7MlnrRQG2vjMY1/8Clv/tZxyTNjZB15yrSmdvjMqHJXZgL z/Tt/SAzq+BHRk7NyUtiZiNal30GkSKUpUZku067ksMdrO3h5y28fwNvE0DRYx7nTcZXFi9u7li5A fUt0yvcix/mkrlw59h/0Wo0UK2J0G8HyXa9CA1LpMjLCDqYuqF0pZ7WdwGew7NA0MH/fC5e2IvCQ9 rbxqK/8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wkFY8-0000000GXOk-2NBL; Thu, 16 Jul 2026 06:26:24 +0000 Received: from mail11.truemail.it ([217.194.8.81]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wkFY5-0000000GXO2-2yzo; Thu, 16 Jul 2026 06:26:23 +0000 Received: from francesco-nb (xcpe-178-82-120-96.dyn.res.sunrise.net [178.82.120.96]) by mail11.truemail.it (Postfix) with ESMTPA id 2FFDD22924; Thu, 16 Jul 2026 08:26:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1784183175; bh=9HXub2A/v9RqkMGdUZjtbYvqdoMeY8h65+2Qb929duA=; h=From:To:Subject; b=bZOBe5XorgczVLTaof+93M63kt1XlmU6uiFSMKAQUgg621TOnz+SJG/NQw5T45d33 GI6nEOo8+pDX386o30SG2efdoiTBf4lm7hBti/iYxN76A10we1SmKNKX4YjT4xsH0y cl/41EFgXjuXG9MG5P0vziDFjuuK+HQzYKQuc3k6x9Njd5jiNNpgsFh5af2cgjslGP /q7G6Go4nQAWhdzcrTmdEnAz3KJrVIqJFGyf48JfeXI+4VfCFcYzv5OXWQHc9M3mj1 8G8gMzSIMaYQoya/zjQjnvlXpav11aQO6GfZd4oVJkC1PPOqb1xyVnIwYpnAlg5s6N zyZN/MwGRLyWQ== Date: Thu, 16 Jul 2026 08:26:12 +0200 From: Francesco Dolcini 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, mripard@kernel.org, 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, dmitry.baryshkov@linaro.org Subject: Re: [PATCH v9 00/19] Add Freescale i.MX8qxp Display Controller support Message-ID: <20260716062612.GC9973@francesco-nb> References: <20250414035028.1561475-1-victor.liu@nxp.com> <20260714193627.GA9616@francesco-nb> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260715_232621_912671_5107E540 X-CRM114-Status: GOOD ( 23.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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, > > > > > > This patch series aims to add Freescale i.MX8qxp Display Controller support. > > > > > > The controller is comprised of three main components that include a blit > > > engine for 2D graphics accelerations, display controller for display output > > > processing, as well as a command sequencer. > > > > ... > > > > > > > > To follow up i.MX8qxp TRM, I changed the controller name to "Display Controller" > > > instead of the previous "DPU". "DPU" is only mentioned in the SoC block > > > diagram and represents the whole display subsystem which includes the display > > > controller and prefech engines, etc. > > > > > > With an additional patch[1] for simple-pm-bus.c, this series facilitates > > > testing a LVDS panel on i.MX8qxp MEK. > > > > > > Please do NOT merge patch 14-19. They are only used to facilitate testing > > > the LVDS panel. > > > > 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. > > > > Can you help? > > I planned to add display controller DT node after prefetch engine support [1] > is picked up so that the prefetch engine could be enabled together with the > display controller. Just want to avoid a DT that only enables the display > controller or bypasses the prefetch engine. It makes the display controller > driver simpler. > > [1] https://lore.kernel.org/all/20251027-imx8-dc-prefetch-v5-0-4ecb6c6d4941@nxp.com/ That series is from October 2025, is there anything blocking to move it forward? Francesco