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Date: Thu, 2 Jun 2022 13:31:37 +0800
From: Rex-BC Chen <rex-bc.chen@...iatek.com>
To: Guillaume Ranquet <granquet@...libre.com>,
Chun-Kuang Hu <chunkuang.hu@...nel.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
"David Airlie" <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Matthias Brugger <matthias.bgg@...il.com>,
Chunfeng Yun (云春峰)
<Chunfeng.Yun@...iatek.com>,
Kishon Vijay Abraham I <kishon@...com>,
Vinod Koul <vkoul@...nel.org>, "Helge Deller" <deller@....de>,
CK Hu (胡俊光)
<ck.hu@...iatek.com>,
Jitao Shi (石记涛)
<jitao.shi@...iatek.com>,
"angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>,
Project_Global_Chrome_Upstream_Group
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
"maxime@...no.tech" <maxime@...no.tech>
CC: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>
Subject: Re: [PATCH v10 00/21] drm/mediatek: Add mt8195 DisplayPort driver
On Thu, 2022-06-02 at 11:50 +0800, Rex-BC Chen wrote:
> On Mon, 2022-05-23 at 12:47 +0200, Guillaume Ranquet wrote:
> > this series is built around the DisplayPort driver. The dpi/dpintf
> > driver and the added helper functions are required for the
> > DisplayPort
> > driver to work.
> >
> > This v10 still has some un-answered comments and TODOs for v11.
> >
> > This has been tested sucessfully on a 5.18-next based "vendor
> > branch".
> >
> > There's a missing dependency in the mediatek clock framework to
> > allow
> > a
> > mux clock to change it's parent automatically on rate change.
> > Without this change, the dpi driver won't properly set the clocks
> > on
> > mode change and thus nothing will be displayed on screen.
> >
> > Changes from v9:
> > - The DP-Phy is back to being a child device of the DP driver (as
> > in
> > v8)
> > - hot plug detection has been added back to Embedded Display
> > Port...
> > as
> > after discussing with mediatek experts, this is needed eventhough
> > the
> > Embedded Display port is not un-pluggable
> > - rebased on linux-next
> > - simplified/split train_handler function, as suggested by Rex
> > - added comments on the sleep/delays present in the code
> > - removed previous patch introducing retries when receiving
> > AUX_DEFER
> > as
> > this is already handled in the dp_aux framework
> > - added max-lane and max-linkrate device tree u8 properties instead
> > of
> > hardcoded #defines
> >
> > Things that are in my todolist for v11:
> > - retrieve CK/DE support from panel driver instead of hardcoding it
> > into
> > the dpi driver
> > - refcount the dp driver "enabled" status for "future proofing"
> > - review the drm_dp_helpers for features/functions that have been
> > re-implemented in the mediatek dp drivers
> >
> > Older revisions:
> > RFC -
> >
https://lore.kernel.org/linux-mediatek/20210816192523.1739365-1-msp@baylibre.com/
> > v1 -
> >
https://lore.kernel.org/linux-mediatek/20210906193529.718845-1-msp@baylibre.com/
> > v2 -
> >
https://lore.kernel.org/linux-mediatek/20210920084424.231825-1-msp@baylibre.com/
> > v3 -
> >
https://lore.kernel.org/linux-mediatek/20211001094443.2770169-1-msp@baylibre.com/
> > v4 -
> >
https://lore.kernel.org/linux-mediatek/20211011094624.3416029-1-msp@baylibre.com/
> > v5 -
> >
https://lore.kernel.org/all/20211021092707.3562523-1-msp@baylibre.com/
> > v6 -
> >
https://lore.kernel.org/linux-mediatek/20211110130623.20553-1-granquet@baylibre.com/
> > v7 -
> >
https://lore.kernel.org/linux-mediatek/20211217150854.2081-1-granquet@baylibre.com/
> > v8 -
> >
https://lore.kernel.org/linux-mediatek/20220218145437.18563-1-granquet@baylibre.com/
> > v9 -
> >
https://lore.kernel.org/all/20220327223927.20848-1-granquet@baylibre.com/
> >
> > Functional dependencies are:
> > - Add Mediatek Soc DRM (vdosys0) support for mt8195
> >
> >
https://lore.kernel.org/linux-mediatek/20220419094143.9561-2-jason-jh.lin@mediatek.com/
> > - Add MediaTek SoC DRM (vdosys1) support for mt8195
> >
> >
https://lore.kernel.org/linux-mediatek/20220512053128.31415-1-nancy.lin@mediatek.com/
> >
> >
> > Guillaume Ranquet (15):
> > drm/edid: Convert cea_sad helper struct to kernelDoc
> > drm/edid: Add cea_sad helpers for freq/length
> > drm/mediatek: dpi: move dpi limits to SoC config
> > drm/mediatek: dpi: implement a CK/DE pol toggle in SoC config
> > drm/mediatek: dpi: implement a swap_input toggle in SoC config
> > drm/mediatek: dpi: move dimension mask to SoC config
> > drm/mediatek: dpi: move hvsize_mask to SoC config
> > drm/mediatek: dpi: move swap_shift to SoC config
> > drm/mediatek: dpi: move the yuv422_en_bit to SoC config
> > drm/mediatek: dpi: move the csc_enable bit to SoC config
> > drm/mediatek: dpi: Add dpintf support
> > drm/mediatek: dpi: Only enable dpi after the bridge is enabled
> > drm/meditek: dpi: Add matrix_sel helper
> > drm/mediatek: Add mt8195 External DisplayPort support
> > drm/mediatek: DP audio support for mt8195
> >
> > Jitao Shi (1):
> > drm/mediatek: add hpd debounce
> >
> > Markus Schneider-Pargmann (5):
> > dt-bindings: mediatek,dpi: Add DPINTF compatible
> > dt-bindings: mediatek,dp: Add Display Port binding
> > video/hdmi: Add audio_infoframe packing for DP
> > phy: phy-mtk-dp: Add driver for DP phy
> > drm/mediatek: Add mt8195 Embedded DisplayPort driver
> >
> > .../display/mediatek/mediatek,dp.yaml | 99 +
> > .../display/mediatek/mediatek,dpi.yaml | 13 +-
> > MAINTAINERS | 1 +
> > drivers/gpu/drm/drm_edid.c | 74 +
> > drivers/gpu/drm/mediatek/Kconfig | 8 +
> > drivers/gpu/drm/mediatek/Makefile | 2 +
> > drivers/gpu/drm/mediatek/mtk_dp.c | 3419
> > +++++++++++++++++
> > drivers/gpu/drm/mediatek/mtk_dp_reg.h | 570 +++
> > drivers/gpu/drm/mediatek/mtk_dpi.c | 272 +-
> > drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 38 +
> > drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 8 +
> > drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 +
> > drivers/gpu/drm/mediatek/mtk_drm_drv.c | 8 +-
> > drivers/gpu/drm/mediatek/mtk_drm_drv.h | 3 +
> > drivers/phy/mediatek/Kconfig | 8 +
> > drivers/phy/mediatek/Makefile | 1 +
> > drivers/phy/mediatek/phy-mtk-dp.c | 200 +
> > drivers/video/hdmi.c | 82 +-
> > include/drm/dp/drm_dp_helper.h | 2 +
> > include/drm/drm_edid.h | 26 +-
> > include/linux/hdmi.h | 7 +-
> > include/linux/soc/mediatek/mtk-mmsys.h | 4 +-
> > 22 files changed, 4765 insertions(+), 81 deletions(-)
> > create mode 100644
> > Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> > create mode 100644 drivers/gpu/drm/mediatek/mtk_dp.c
> > create mode 100644 drivers/gpu/drm/mediatek/mtk_dp_reg.h
> > create mode 100644 drivers/phy/mediatek/phy-mtk-dp.c
>
> Hello all,
>
> Due to the resource issue, I will keep upstreaming Guillaume's MT8195
> dp/edp series.
>
> I will check the comments for v8/v9/v10 and have some discussion with
> you.
>
> Thanks for your all comments.
>
> BRs,
> Bo-Chen
>
Hello all,
Because the patches of dp_intf seem to be almost completed, I want to
split this series into two series:
dp_intf and edp/dp.
It will be easier to review and maintain this series.
Thanks!
BRs,
Bo-Chen
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