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Wed, 11 Mar 2020 05:01:49 -0800 Received: from MTKMBS06N2.mediatek.inc (172.21.101.130) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 11 Mar 2020 06:02:19 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs06n2.mediatek.inc (172.21.101.130) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 11 Mar 2020 21:01:45 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 11 Mar 2020 21:00:54 +0800 Message-ID: <1583931705.29614.3.camel@mtksdaap41> Subject: Re: [PATCH v11 0/5] arm/arm64: mediatek: Fix mt8173 mmsys device probing From: CK Hu To: Enric Balletbo i Serra Date: Wed, 11 Mar 2020 21:01:45 +0800 In-Reply-To: <20200311115614.1425528-1-enric.balletbo@collabora.com> References: <20200311115614.1425528-1-enric.balletbo@collabora.com> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: D0C530029DFB3D1C48B2A2ED83E49AE8D5F42442F09CD39392B33A38427356E82000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200311_060200_969411_99E36C8E X-CRM114-Status: GOOD ( 24.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, Kate Stewart , Minghsiu Tsai , Andrew-CT Chen , airlied@linux.ie, mturquette@baylibre.com, dri-devel@lists.freedesktop.org, Richard Fontana , laurent.pinchart@ideasonboard.com, ulrich.hecht+renesas@gmail.com, Collabora Kernel ML , linux-clk@vger.kernel.org, Nicolas Boichat , Weiyi Lu , Krzysztof Kozlowski , wens@csie.org, linux-arm-kernel@lists.infradead.org, mtk01761 , Owen Chen , linux-media@vger.kernel.org, devicetree@vger.kernel.org, p.zabel@pengutronix.de, frank-w@public-files.de, Seiya Wang , sean.wang@mediatek.com, Houlong Wei , robh+dt@kernel.org, linux-mediatek@lists.infradead.org, hsinyi@chromium.org, Matthias Brugger , Thomas Gleixner , Mauro Carvalho Chehab , Allison Randal , Matthias Brugger , Fabien Parent , sboyd@kernel.org, Greg Kroah-Hartman , rdunlap@infradead.org, linux-kernel@vger.kernel.org, Daniel Vetter , matthias.bgg@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Enric: I'm confused this is v11 or v12. For v12, you've lost some 'Acked-by' and 'Reviewed-by' tag. Regards, CK On Wed, 2020-03-11 at 12:56 +0100, Enric Balletbo i Serra wrote: > Dear all, > > These 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. > > These patches apply on top of linux-next. > > 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: > - Leave the clocks part in drivers/clk (clk-mt8173-mm) > - Instantiate the clock driver from the mtk-mmsys driver. > - Add default config option to not break anything. > - Removed the Reviewed-by CK tag as changed the organization. > > 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 > - Select CONFIG_MTK_MMSYS (CK) > - Pass device pointer of mmsys device instead of config regs (CK) > - Match driver data to get display routing. > > Changes in v9: > - Move mmsys to drivers/soc/mediatek (CK) > - Introduced a new patch to move routing control into mmsys driver. > - Removed the patch to use regmap as is not needed anymore. > - 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 > clk / soc: mediatek: Move mt8173 MMSYS to platform driver > > .../bindings/arm/mediatek/mediatek,mmsys.txt | 7 +- > drivers/clk/mediatek/Kconfig | 7 + > drivers/clk/mediatek/Makefile | 1 + > drivers/clk/mediatek/clk-mt8173-mm.c | 146 ++++++++ > 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 | 8 + > drivers/soc/mediatek/Makefile | 1 + > drivers/soc/mediatek/mtk-mmsys.c | 335 ++++++++++++++++++ > include/linux/soc/mediatek/mtk-mmsys.h | 20 ++ > 21 files changed, 590 insertions(+), 411 deletions(-) > create mode 100644 drivers/clk/mediatek/clk-mt8173-mm.c > create mode 100644 drivers/soc/mediatek/mtk-mmsys.c > create mode 100644 include/linux/soc/mediatek/mtk-mmsys.h > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel