linux-kernel - [PATCH 0/6] Add support for RK3588 DisplayPort Controller

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Message-ID: <20250223113036.74252-1-andyshrk@163.com>
Date: Sun, 23 Feb 2025 19:30:23 +0800
From: Andy Yan <andyshrk@....com>
To: heiko@...ech.de
Cc: hjc@...k-chips.com,
	mripard@...nel.org,
	cristian.ciocaltea@...labora.com,
	neil.armstrong@...aro.org,
	yubing.zhang@...k-chips.com,
	krzk+dt@...nel.org,
	devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	robh@...nel.org,
	sebastian.reichel@...labora.com,
	Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH 0/6] Add support for RK3588 DisplayPort Controller

From: Andy Yan <andy.yan@...k-chips.com>


There are two DW DPTX based DisplayPort Controller on rk3588 which
are compliant with the DisplayPort Specification Version 1.4 with
the following features:

* DisplayPort 1.4a
* Main Link: 1/2/4 lanes
* Main Link Support 1.62Gbps, 2.7Gbps, 5.4Gbps and 8.1Gbps
* AUX channel 1Mbps
* Single Stream Transport(SST)
* Multistream Transport (MST)
*Type-C support (alternate mode)
* HDCP 2.2, HDCP 1.3
* Supports up to 8/10 bits per color component
* Supports RBG, YCbCr4:4:4, YCbCr4:2:2, YCbCr4:2:0
* Pixel clock up to 594MHz
* I2S, SPDIF audio interface

The current version of this patch series only supports basic display outputs.
I conducted tests in 1080p and 4K@60 YCbCr4:2:0 modes; the ALT/Type-C mode
hasn't been tested yet, but I suspect it will likely work. HDCP and audio
features remain unimplemented. For RK3588, it's only support SST, while in
the upcoming RK3576, it can support MST output.


Andy Yan (6):
  dt-bindings: display: rockchip: Add schema for RK3588 DPTX Controller
  drm/bridge: synopsys: Add DW DPTX Controller support library
  drm/rockchip: Add RK3588 DPTX output support
  arm64: dts: rockchip: Add DP0 for rk3588
  arm64: dts: rockchip: Add DP1 for rk3588
  arm64: dts: rockchip: Enable DisplayPort for rk3588s Cool Pi 4B

 .../display/rockchip/rockchip,dw-dp.yaml      |  150 ++
 arch/arm64/boot/dts/rockchip/rk3588-base.dtsi |   30 +
 .../arm64/boot/dts/rockchip/rk3588-extra.dtsi |   30 +
 .../boot/dts/rockchip/rk3588s-coolpi-4b.dts   |   37 +
 drivers/gpu/drm/bridge/synopsys/Kconfig       |    7 +
 drivers/gpu/drm/bridge/synopsys/Makefile      |    1 +
 drivers/gpu/drm/bridge/synopsys/dw-dp.c       | 2155 +++++++++++++++++
 drivers/gpu/drm/rockchip/Kconfig              |    7 +
 drivers/gpu/drm/rockchip/Makefile             |    1 +
 drivers/gpu/drm/rockchip/dw_dp-rockchip.c     |  162 ++
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |    1 +
 drivers/gpu/drm/rockchip/rockchip_drm_drv.h   |    1 +
 include/drm/bridge/dw_dp.h                    |   19 +
 13 files changed, 2601 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/rockchip/rockchip,dw-dp.yaml
 create mode 100644 drivers/gpu/drm/bridge/synopsys/dw-dp.c
 create mode 100644 drivers/gpu/drm/rockchip/dw_dp-rockchip.c
 create mode 100644 include/drm/bridge/dw_dp.h

-- 
2.34.1