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Message-ID: <CAGXv+5Ff4+HS5_DSTX2U7SaCnZhWMWTN44wr+4_vYNrQQm_mDA@mail.gmail.com> Date: Tue, 10 Sep 2024 17:39:59 +0800 From: Chen-Yu Tsai <wenst@...omium.org> To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> Cc: chunkuang.hu@...nel.org, robh@...nel.org, krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch, maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, matthias.bgg@...il.com, shawn.sung@...iatek.com, yu-chang.lee@...iatek.com, ck.hu@...iatek.com, jitao.shi@...iatek.com, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, kernel@...labora.com, sui.jingfeng@...ux.dev, michael@...le.cc, sjoerd@...labora.com Subject: Re: [PATCH v9 0/3] drm/mediatek: Add support for OF graphs On Tue, Sep 10, 2024 at 5:01 PM AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> wrote: > > Changes in v9: > - Rebased on next-20240910 > - Removed redundant assignment and changed a print to dev_err() > - Dropped if branch to switch conversion as requested; this will > be sent as a separate commit out of this series. > > Changes in v8: > - Rebased on next-20240617 > - Changed to allow probing a VDO with no available display outputs > > Changes in v7: > - Fix typo in patch 3/3 > > Changes in v6: > - Added EPROBE_DEFER check to fix dsi/dpi false positive DT fallback case > - Dropped refcount of ep_out in mtk_drm_of_get_ddp_ep_cid() > - Fixed double refcount drop during path building > - Removed failure upon finding a DT-disabled path as requested > - Tested again on MT8195, MT8395 boards > > Changes in v5: > - Fixed commit [2/3], changed allOf -> anyOf to get the > intended allowance in the binding > > Changes in v4: > - Fixed a typo that caused pure OF graphs pipelines multiple > concurrent outputs to not get correctly parsed (port->id); > - Added OVL_ADAPTOR support for OF graph specified pipelines; > - Now tested with fully OF Graph specified pipelines on MT8195 > Chromebooks and MT8395 boards; > - Rebased on next-20240516 > > Changes in v3: > - Rebased on next-20240502 because of renames in mediatek-drm > > Changes in v2: > - Fixed wrong `required` block indentation in commit [2/3] > > > The display IPs in MediaTek SoCs are *VERY* flexible and those support > being interconnected with different instances of DDP IPs (for example, > merge0 or merge1) and/or with different DDP IPs (for example, rdma can > be connected with either color, dpi, dsi, merge, etc), forming a full > Display Data Path that ends with an actual display. > > This series was born because of an issue that I've found while enabling > support for MT8195/MT8395 boards with DSI output as main display: the > current mtk_drm_route variations would not work as currently, the driver > hardcodes a display path for Chromebooks, which have a DisplayPort panel > with DSC support, instead of a DSI panel without DSC support. > > There are other reasons for which I wrote this series, and I find that > hardcoding those paths - when a HW path is clearly board-specific - is > highly suboptimal. Also, let's not forget about keeping this driver from > becoming a huge list of paths for each combination of SoC->board->disp > and... this and that. > > For more information, please look at the commit description for each of > the commits included in this series. > > This series is essential to enable support for the MT8195/MT8395 EVK, > Kontron i1200, Radxa NIO-12L and, mainly, for non-Chromebook boards > and Chromebooks to co-exist without conflicts. > > Besides, this is also a valid option for MT8188 Chromebooks which might > have different DSI-or-eDP displays depending on the model (as far as I > can see from the mtk_drm_route attempt for this SoC that is already > present in this driver). > > This series was tested on MT8195 Cherry Tomato and on MT8395 Radxa > NIO-12L with both hardcoded paths, OF graph support and partially > hardcoded paths, and pure OF graph support including pipelines that > require OVL_ADAPTOR support. > > AngeloGioacchino Del Regno (3): > dt-bindings: display: mediatek: Add OF graph support for board path > dt-bindings: arm: mediatek: mmsys: Add OF graph support for board path > drm/mediatek: Implement OF graphs support for display paths > > .../bindings/arm/mediatek/mediatek,mmsys.yaml | 28 ++ > .../arm/mediatek/mediatek,mmsys.yaml.orig | 140 ++++++++++ > .../display/mediatek/mediatek,aal.yaml | 40 +++ > .../display/mediatek/mediatek,aal.yaml.orig | 93 +++++++ > .../display/mediatek/mediatek,ccorr.yaml | 21 ++ > .../display/mediatek/mediatek,ccorr.yaml.orig | 88 ++++++ > .../display/mediatek/mediatek,color.yaml | 22 ++ > .../display/mediatek/mediatek,color.yaml.orig | 96 +++++++ > .../display/mediatek/mediatek,dither.yaml | 22 ++ > .../mediatek/mediatek,dither.yaml.orig | 87 ++++++ > .../display/mediatek/mediatek,dpi.yaml | 25 +- > .../display/mediatek/mediatek,dpi.yaml.orig | 122 +++++++++ > .../display/mediatek/mediatek,dsc.yaml | 24 ++ > .../display/mediatek/mediatek,dsi.yaml | 27 +- > .../display/mediatek/mediatek,dsi.yaml.orig | 126 +++++++++ > .../display/mediatek/mediatek,ethdr.yaml | 22 ++ > .../display/mediatek/mediatek,gamma.yaml | 19 ++ > .../display/mediatek/mediatek,gamma.yaml.orig | 96 +++++++ > .../display/mediatek/mediatek,merge.yaml | 23 ++ > .../display/mediatek/mediatek,merge.yaml.orig | 110 ++++++++ > .../display/mediatek/mediatek,od.yaml | 22 ++ > .../display/mediatek/mediatek,ovl-2l.yaml | 22 ++ > .../mediatek/mediatek,ovl-2l.yaml.orig | 78 ++++++ > .../display/mediatek/mediatek,ovl.yaml | 22 ++ > .../display/mediatek/mediatek,ovl.yaml.orig | 109 ++++++++ > .../display/mediatek/mediatek,postmask.yaml | 21 ++ > .../display/mediatek/mediatek,rdma.yaml | 22 ++ > .../display/mediatek/mediatek,rdma.yaml.orig | 122 +++++++++ > .../display/mediatek/mediatek,ufoe.yaml | 21 ++ > .../display/mediatek/mediatek,wdma.yaml.orig | 76 ++++++ > .../bindings/gpu/arm,mali-bifrost.yaml.orig | 250 +++++++++++++++++ > .../bindings/leds/leds-mt6323.txt.orig | 60 +++++ > .../bindings/ufs/mediatek,ufs.yaml.orig | 71 +++++ > drivers/gpu/drm/mediatek/mtk_disp_drv.h | 1 + > .../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 40 ++- > drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +- > drivers/gpu/drm/mediatek/mtk_drm_drv.c | 253 +++++++++++++++++- > drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- > drivers/gpu/drm/mediatek/mtk_dsi.c | 14 +- > 39 files changed, 2433 insertions(+), 25 deletions(-) > create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,aal.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,ccorr.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,color.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dither.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,gamma.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,merge.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,ovl-2l.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,ovl.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,rdma.yaml.orig > create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,wdma.yaml.orig > create mode 100644 Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml.orig > create mode 100644 Documentation/devicetree/bindings/leds/leds-mt6323.txt.orig > create mode 100644 Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml.orig It looks like you accidentally imported a bunch of files from Git. ChenYu > > -- > 2.46.0 >
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