From patchwork Mon Mar 2 11:01:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 11417365 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 D6236924 for ; Tue, 3 Mar 2020 08:24:41 +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 BEE99208C3 for ; Tue, 3 Mar 2020 08:24:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BEE99208C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.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 8E7156E9E8; Tue, 3 Mar 2020 08:24:10 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 450916E13A for ; Mon, 2 Mar 2020 11:01:39 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 2EE212949CC From: Enric Balletbo i Serra To: robh+dt@kernel.org, mark.rutland@arm.com, ck.hu@mediatek.com, p.zabel@pengutronix.de, airlied@linux.ie, mturquette@baylibre.com, sboyd@kernel.org, ulrich.hecht+renesas@gmail.com, laurent.pinchart@ideasonboard.com Subject: [PATCH v11 0/5] arm/arm64: mediatek: Fix mt8173 mmsys device probing Date: Mon, 2 Mar 2020 12:01:23 +0100 Message-Id: <20200302110128.2664251-1-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 03 Mar 2020 08:24:06 +0000 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: Kate Stewart , Andrew-CT Chen , Minghsiu Tsai , dri-devel@lists.freedesktop.org, Richard Fontana , Collabora Kernel ML , linux-clk@vger.kernel.org, Weiyi Lu , wens@csie.org, linux-arm-kernel@lists.infradead.org, mtk01761 , linux-media@vger.kernel.org, devicetree@vger.kernel.org, frank-w@public-files.de, Seiya Wang , sean.wang@mediatek.com, Houlong Wei , linux-mediatek@lists.infradead.org, hsinyi@chromium.org, Matthias Brugger , Thomas Gleixner , Mauro Carvalho Chehab , Allison Randal , Matthias Brugger , Greg Kroah-Hartman , rdunlap@infradead.org, linux-kernel@vger.kernel.org, matthias.bgg@kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Dear all, Those patches are intended to solve an old standing issue on some Mediatek devices (mt8173, mt2701 and mt2712 are affected by this issue). Up to now both drivers, clock and drm are probed with the same device tree compatible. But only the first driver gets probed, which in effect breaks graphics on those devices. The MMSYS (Multimedia subsystem) in Mediatek SoCs has some registers to control clock gates (which is used in the clk driver) and some registers to set the routing and enable the differnet blocks of the display and MDP (Media Data Path) subsystem. On this series the clk driver is not a pure clock controller but a system controller that can provide access to the shared registers between the different drivers that need it (mediatek-drm and mediatek-mdp). Hence the MMSYS clk driver was moved to drivers/soc/mediatek and is the entry point (parent) which will trigger the probe of the corresponding mediatek-drm driver. **IMPORTANT** This series only fixes the issue on mt8173 to make it simple and as is the only platform I can test. Similar changes should be applied for mt2701 and mt2712 to have display working. For reference, here are the links to the old discussions: * v10: https://patchwork.kernel.org/project/linux-mediatek/list/?series=248505 * v9: https://patchwork.kernel.org/project/linux-clk/list/?series=247591 * v8: https://patchwork.kernel.org/project/linux-mediatek/list/?series=244891 * v7: https://patchwork.kernel.org/project/linux-mediatek/list/?series=241217 * v6: https://patchwork.kernel.org/project/linux-mediatek/list/?series=213219 * v5: https://patchwork.kernel.org/project/linux-mediatek/list/?series=44063 * v4: * https://patchwork.kernel.org/patch/10530871/ * https://patchwork.kernel.org/patch/10530883/ * https://patchwork.kernel.org/patch/10530885/ * https://patchwork.kernel.org/patch/10530911/ * https://patchwork.kernel.org/patch/10530913/ * v3: * https://patchwork.kernel.org/patch/10367857/ * https://patchwork.kernel.org/patch/10367861/ * https://patchwork.kernel.org/patch/10367877/ * https://patchwork.kernel.org/patch/10367875/ * https://patchwork.kernel.org/patch/10367885/ * https://patchwork.kernel.org/patch/10367883/ * https://patchwork.kernel.org/patch/10367889/ * https://patchwork.kernel.org/patch/10367907/ * https://patchwork.kernel.org/patch/10367909/ * https://patchwork.kernel.org/patch/10367905/ * v2: No relevant discussion, see v3 * v1: * https://patchwork.kernel.org/patch/10016497/ * https://patchwork.kernel.org/patch/10016499/ * https://patchwork.kernel.org/patch/10016505/ * https://patchwork.kernel.org/patch/10016507/ Best regards, Enric Changes in v11: - Select CONFIG_MTK_MMSYS (CK) - Pass device pointer of mmsys device instead of config regs (CK) Changes in v10: - Update the binding documentation for the mmsys system controller. - Renamed to be generic mtk-mmsys - Add driver data support to be able to support diferent SoCs - Introduced a new patch to move routing control into mmsys driver. - Removed the patch to use regmap as is not needed anymore. - Match driver data to get display routing. Changes in v9: - Move mmsys to drivers/soc/mediatek (CK) - Do not move the display routing from the drm driver (CK) Changes in v8: - Be a builtin_platform_driver like other mediatek mmsys drivers. - New patch introduced in this series. Changes in v7: - Free clk_data->clks as well - Get rid of private data structure Enric Balletbo i Serra (3): dt-bindings: mediatek: Update mmsys binding to reflect it is a system controller soc / drm: mediatek: Move routing control to mmsys device soc / drm: mediatek: Fix mediatek-drm device probing Matthias Brugger (2): drm/mediatek: Omit warning on probe defers soc: mediatek: Move mt8173 MMSYS to platform driver .../bindings/arm/mediatek/mediatek,mmsys.txt | 7 +- drivers/clk/mediatek/clk-mt8173.c | 104 ----- drivers/gpu/drm/mediatek/Kconfig | 1 + drivers/gpu/drm/mediatek/mtk_disp_color.c | 5 +- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 5 +- drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 5 +- drivers/gpu/drm/mediatek/mtk_dpi.c | 12 +- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 19 +- drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 259 +---------- drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 7 - drivers/gpu/drm/mediatek/mtk_drm_drv.c | 45 +- drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- drivers/gpu/drm/mediatek/mtk_dsi.c | 8 +- drivers/gpu/drm/mediatek/mtk_hdmi.c | 4 +- drivers/soc/mediatek/Kconfig | 7 + drivers/soc/mediatek/Makefile | 1 + drivers/soc/mediatek/mtk-mmsys.c | 437 ++++++++++++++++++ include/linux/soc/mediatek/mtk-mmsys.h | 20 + 18 files changed, 537 insertions(+), 411 deletions(-) create mode 100644 drivers/soc/mediatek/mtk-mmsys.c create mode 100644 include/linux/soc/mediatek/mtk-mmsys.h