linux-kernel - Re: [PATCH v1 00/10] Add eDP support for RK3588

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Message-ID: <5939852.zQ0Gbyo6oJ@diego>
Date: Fri, 06 Dec 2024 15:35:27 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Damon Ding <damon.ding@...k-chips.com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 rfoss@...nel.org, vkoul@...nel.org, sebastian.reichel@...labora.com,
 cristian.ciocaltea@...labora.com, l.stach@...gutronix.de,
 andy.yan@...k-chips.com, hjc@...k-chips.com, algea.cao@...k-chips.com,
 kever.yang@...k-chips.com, dri-devel@...ts.freedesktop.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-phy@...ts.infradead.org, Damon Ding <damon.ding@...k-chips.com>
Subject: Re: [PATCH v1 00/10] Add eDP support for RK3588

Hi Daemon,

Am Mittwoch, 27. November 2024, 08:51:47 CET schrieb Damon Ding:
> These patchs have been tested with a 1536x2048p60 eDP panel on
> RK3588S EVB1 board, and HDMI 1080P/4K display also has been verified
> on RK3588 EVB1 board.
> 
> Patch 1~3 are the RK3588 eDP support of Rockchip analogix_dp driver.
> Patch 4   is the eDP mode support of samsung hdptx phy driver.
> Patch 5~6 are the Rk3588 eDP support of Aanalogix DP driver. Add phy
>           interfaces is to configure the HDMI/eDP TX Combo PHY.
> Patch 7~8 are the renaming of hdptxphy node. It is not only used by
>           HDMI display but also for the eDP display.
> Patch 9   is the addition of RK3588 eDP0 node.
> Patch 10  is to enable the eDP0 display on RK3588S EVB1 board.

Could you maybe also bring over functionality for real bridge-handling?
That way we'd have support for things like the dp-connector bridge.

In the 6.1 vendor-tree I've found commits
94e598190128 ("drm/rockchip: analogix_dp: Add support for external bridge")
437e0a901b14 ("drm/bridge: analogix_dp: Support split mode for bridge chain")

needing a bit of cleanup of course, but that would get rid of the driver
not handling the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag too.

With a bit of streamlining, we could maybe even get rid of the panel-part
completely, similar to how the dw-dsi controllers do it [0]


Thanks
Heiko

[0] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c#n335
devm_drm_of_get_bridge() combines drm_of_find_panel_or_bridge()
with devm_drm_panel_bridge_add(), so indepent of it being either a
panel or other bridge, the driver below only needs to handle bridges.

> Damon Ding (10):
>   drm/rockchip: analogix_dp: Use formalized struct definition for grf
>     field
>   dt-bindings: display: rockchip: analogix-dp: Add support for RK3588
>   drm/rockchip: analogix_dp: Add support for RK3588
>   phy: phy-rockchip-samsung-hdptx: Add support for eDP mode
>   drm/bridge: analogix_dp: add support for RK3588
>   drm/bridge: analogix_dp: Add support for phy configuration.
>   dt-bindings: display: rockchip: Fix label name of hdptxphy for RK3588
>     HDMI TX Controller
>   arm64: dts: rockchip: Fix label name of hdptxphy for RK3588
>   arm64: dts: rockchip: Add eDP0 node for RK3588
>   arch64: dts: rockchip: Enable eDP0 display on RK3588S EVB1 board
> 
>  .../rockchip/rockchip,analogix-dp.yaml        |   1 +
>  .../rockchip/rockchip,rk3588-dw-hdmi-qp.yaml  |   2 +-
>  arch/arm64/boot/dts/rockchip/rk3588-base.dtsi |  33 +-
>  .../dts/rockchip/rk3588-coolpi-cm5-evb.dts    |   2 +-
>  .../rockchip/rk3588-coolpi-cm5-genbook.dts    |   2 +-
>  .../boot/dts/rockchip/rk3588-evb1-v10.dts     |   2 +-
>  .../rk3588-friendlyelec-cm3588-nas.dts        |   2 +-
>  .../arm64/boot/dts/rockchip/rk3588-jaguar.dts |   2 +-
>  .../boot/dts/rockchip/rk3588-nanopc-t6.dtsi   |   2 +-
>  .../dts/rockchip/rk3588-orangepi-5-plus.dts   |   2 +-
>  .../boot/dts/rockchip/rk3588-rock-5b.dts      |   2 +-
>  .../boot/dts/rockchip/rk3588-tiger-haikou.dts |   2 +-
>  .../boot/dts/rockchip/rk3588s-coolpi-4b.dts   |   2 +-
>  .../boot/dts/rockchip/rk3588s-evb1-v10.dts    |  84 ++
>  .../dts/rockchip/rk3588s-indiedroid-nova.dts  |   2 +-
>  .../boot/dts/rockchip/rk3588s-nanopi-r6.dtsi  |   2 +-
>  .../boot/dts/rockchip/rk3588s-odroid-m2.dts   |   2 +-
>  .../boot/dts/rockchip/rk3588s-orangepi-5.dtsi |   2 +-
>  .../boot/dts/rockchip/rk3588s-rock-5a.dts     |   2 +-
>  .../boot/dts/rockchip/rk3588s-rock-5c.dts     |   2 +-
>  .../drm/bridge/analogix/analogix_dp_core.c    |   8 +-
>  .../drm/bridge/analogix/analogix_dp_core.h    |   2 +
>  .../gpu/drm/bridge/analogix/analogix_dp_reg.c |  90 ++
>  .../gpu/drm/rockchip/analogix_dp-rockchip.c   | 112 ++-
>  .../phy/rockchip/phy-rockchip-samsung-hdptx.c | 936 +++++++++++++++++-
>  include/drm/bridge/analogix_dp.h              |   3 +-
>  26 files changed, 1206 insertions(+), 97 deletions(-)
> 
>