From patchwork Thu Aug 13 01:29:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 11711483 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BD89D913 for ; Thu, 13 Aug 2020 01:29:42 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9C04320829 for ; Thu, 13 Aug 2020 01:29:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="qA1YrFcf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9C04320829 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A594C6E34D; Thu, 13 Aug 2020 01:29:34 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by gabe.freedesktop.org (Postfix) with ESMTPS id 261256E2E6 for ; Thu, 13 Aug 2020 01:29:33 +0000 (UTC) Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A9FCA2B7; Thu, 13 Aug 2020 03:29:29 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1597282170; bh=bd0qYrwzrJ4bHxah62yG+bSosA6MvnK/Qf6Qk4KfRec=; h=From:To:Cc:Subject:Date:From; b=qA1YrFcfzEx/YVld5LXlgsHPoUO6W2lFzzyWrjAL+0X/PoiJXBR+fRDb3nwNYFPww w5xF6VO5XX/Uz2ZKj3gNVJLpSsQM5C/3t8ix/43sPwRQQbeGhAW7RUoQ1msOEXRevN nlGAdZ/dXy1ait7uEcxrDl3FnSdlcu1rcHm79+Uk= From: Laurent Pinchart To: dri-devel@lists.freedesktop.org Subject: [PATCH 0/8] drm: mxsfb: Allow overriding bus width Date: Thu, 13 Aug 2020 04:29:02 +0300 Message-Id: <20200813012910.13576-1-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Vasut , devicetree@vger.kernel.org, =?utf-8?q?Guido?= =?utf-8?q?_G=C3=BCnther?= , Rob Herring , Pengutronix Kernel Team , linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hello, This patch series adds support to the mxsfb driver for bus width override. The need came from a hardware platform where a 18-bpp panel had the R[5:0], G[5:0] and B[5:0] signals connected to LCD_DATA[7:2], LCD_DATA[15:10] and LCD_DATA[23:18] instead of LCD_DATA[5:0], LCD_DATA[11:6] and LCD_DATA[17:12]. The bus width, automatically configured to 18 by querying the panel, is incorrect in this case, and needs to be set to 24. To solve this issue, a new bus-width DT property is added to the mxsfb DT binding. Patch 1/8 first converts the binding to YAML, with a fix for the compatible string values in 2/8. Patch 3/8 then adds the new property, and 4/8 renames the binding file to fsl,lcdif.yaml to match the usual naming convention. I've kept that patch last to make it easy to drop should should mxsfb.yaml be preferred. Patches 5/8 to 6/8 then fix the DT sources to match the LCDIF bindings, as I noticed during the conversion that the compatible strings were badly managed (see patch 2/8 for a longer explanation). Patch 7/8 drops an unused clock from DT sources. Patch 8/8 finally adds support for the bus-width property to the mxsfb driver. Laurent Pinchart (8): dt-bindings: display: mxsfb: Convert binding to YAML dt-bindings: display: mxsfb: Add and fix compatible strings dt-bindings: display: mxsfb: Add a bus-width endpoint property dt-bindings: display: mxsfb: Rename to fsl,lcdif.yaml ARM: dts: imx: Fix LCDIF compatible strings arm64: dts: imx8mq: Fix LCDIF compatible strings ARM: dts: imx: Remove unneeded LCDIF disp_axi clock drm: mxsfb: Add support for the bus-width DT property .../bindings/display/fsl,lcdif.yaml | 135 ++++++++++++++++++ .../devicetree/bindings/display/mxsfb.txt | 87 ----------- MAINTAINERS | 2 +- arch/arm/boot/dts/imx6sl.dtsi | 7 +- arch/arm/boot/dts/imx6sll.dtsi | 7 +- arch/arm/boot/dts/imx6sx.dtsi | 4 +- arch/arm/boot/dts/imx6ul.dtsi | 7 +- arch/arm64/boot/dts/freescale/imx8mq.dtsi | 2 +- drivers/gpu/drm/mxsfb/mxsfb_drv.c | 26 ++++ drivers/gpu/drm/mxsfb/mxsfb_drv.h | 2 + drivers/gpu/drm/mxsfb/mxsfb_kms.c | 8 +- 11 files changed, 182 insertions(+), 105 deletions(-) create mode 100644 Documentation/devicetree/bindings/display/fsl,lcdif.yaml delete mode 100644 Documentation/devicetree/bindings/display/mxsfb.txt