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Subject: Re: [PATCH v4 00/10] Initial support for Cadence MHDP(HDMI/DP) for i.MX8MQ
From:   Alexander Stein <alexander.stein@ew.tq-group.com>
To:     Sandor Yu <Sandor.yu@nxp.com>
Cc:     andrzej.hajda@intel.com, neil.armstrong@linaro.org,
        robert.foss@linaro.org, Laurent.pinchart@ideasonboard.com,
        jonas@kwiboo.se, jernej.skrabec@gmail.com, airlied@gmail.com,
        daniel@ffwll.ch, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, shawnguo@kernel.org,
        s.hauer@pengutronix.de, festevam@gmail.com, kishon@ti.com,
        vkoul@kernel.org, dri-devel@lists.freedesktop.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org,
        kernel@pengutronix.de, linux-imx@nxp.com, Sandor.yu@nxp.com,
        oliver.brown@nxp.com
Date:   Mon, 21 Nov 2022 09:36:16 +0100
Message-ID: <4760535.GXAFRqVoOG@steina-w>
Organization: TQ-Systems GmbH
In-Reply-To: <cover.1669013346.git.Sandor.yu@nxp.com>
References: <cover.1669013346.git.Sandor.yu@nxp.com>
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Hello Sandor,

thanks for the updated series.

Am Montag, 21. November 2022, 08:23:50 CET schrieb Sandor Yu:
> The patch set initial support for Cadence MHDP(HDMI/DP) DRM bridge
> drivers and Cadence HDP-TX PHY(HDMI/DP) drivers for iMX8MQ.
> 
> The patch set compose of DRM bridge drivers and PHY drivers.
> Both of them need the followed two patches to pass build.
>   drm: bridge: cadence: convert mailbox functions to macro functions
>   phy: Add HDMI configuration options
> 
> DRM bridges driver patches:
>   dts-bingings: display: bridge: Add MHDP HDMI bindings for i.MX8MQ
>   drm: bridge: cadence: Add MHDP DP driver for i.MX8MQ
>   dts-bindings: display: bridge: Add MHDP DP bindings for i.MX8MQ
>   drm: bridge: cadence: Add MHDP HDMI driver for i.MX8MQ
> 
> PHY driver patches:
>   dts-bindings: phy: Add Cadence HDP-TX DP PHY bindings
>   phy: cadence: Add driver for HDP-TX DisplyPort PHY
>   dts-bindings: phy: Add Cadence HDP-TX HDMI PHY bindings
>   phy: cadence: Add driver for HDP-TX HDMI PHY
> 
> v3->v4:
> dt-bindings:
> - Correct dt-bindings coding style and address review comments.
> - Add apb_clk description.
> - Add output port for HDMI/DP connector
> PHY:
> - Alphabetically sorted in Kconfig and Makefile for DP and HDMI PHY
> - Remove unused registers define from HDMI and DP PHY drivers.
> - More description in phy_hdmi.h.
> - Add apb_clk to HDMI and DP phy driver.
> HDMI/DP:
> - Use get_unaligned_le32() to replace hardcode type conversion
>   in HDMI AVI infoframe data fill function.
> - Add mailbox mutex lock in HDMI/DP driver for phy functions
>   to reslove race conditions between HDMI/DP and PHY drivers.
> - Add apb_clk to both HDMI and DP driver.
> - Rename some function names and add prefix with "cdns_hdmi/cdns_dp".
> - Remove bpc 12 and 16 optional that not supported.

With the apb_clk enabled now, I can use both HDMI and PHY driver as modules 
now. Thanks!

Best regards,
Alexander

> v2->v3:
> Address comments for dt-bindings files.
> - Correct dts-bindings file names
>   Rename phy-cadence-hdptx-dp.yaml to cdns,mhdp-imx8mq-dp.yaml
>   Rename phy-cadence-hdptx-hdmi.yaml to cdns,mhdp-imx8mq-hdmi.yaml
> - Drop redundant words and descriptions.
> - Correct hdmi/dp node name.
> 
> v2 is a completely different version compared to v1.
> Previous v1 can be available here [1].
> 
> v1->v2:
> - Reuse Cadence mailbox access functions from mhdp8546 instead of
>   rockchip DP.
> - Mailbox access functions be convert to marco functions
>   that will be referenced by HDP-TX PHY(HDMI/DP) driver too.
> - Plain bridge instead of component driver.
> - Standalone Cadence HDP-TX PHY(HDMI/DP) driver.
> - Audio driver are removed from the patch set, it will be add in another
>   patch set later.
> 
> [1]
> https://patchwork.kernel.org/project/linux-rockchip/cover/cover.1590982881.
> git.Sandor.yu@nxp.com/
> 
> Sandor Yu (10):
>   drm: bridge: cadence: convert mailbox functions to macro functions
>   dt-bindings: display: bridge: Add MHDP DP for i.MX8MQ
>   drm: bridge: cadence: Add MHDP DP driver for i.MX8MQ
>   phy: Add HDMI configuration options
>   dt-bindings: display: bridge: Add MHDP HDMI for i.MX8MQ
>   drm: bridge: cadence: Add MHDP HDMI driver for i.MX8MQ
>   dt-bindings: phy: Add Cadence HDP-TX DP PHY
>   phy: cadence: Add driver for HDP-TX DisplyPort PHY
>   dt-bindings: phy: Add Cadence HDP-TX HDMI PHY
>   phy: cadence: Add driver for HDP-TX HDMI PHY
> 
>  .../display/bridge/cdns,mhdp-imx8mq-dp.yaml   |   93 ++
>  .../display/bridge/cdns,mhdp-imx8mq-hdmi.yaml |   93 ++
>  .../bindings/phy/cdns,hdptx-dp-phy.yaml       |   68 ++
>  .../bindings/phy/cdns,hdptx-hdmi-phy.yaml     |   52 +
>  drivers/gpu/drm/bridge/cadence/Kconfig        |   25 +
>  drivers/gpu/drm/bridge/cadence/Makefile       |    3 +
>  drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 1071 +++++++++++++++++
>  .../gpu/drm/bridge/cadence/cdns-hdmi-core.c   | 1018 ++++++++++++++++
>  .../gpu/drm/bridge/cadence/cdns-mhdp-common.h |  400 ++++++
>  .../drm/bridge/cadence/cdns-mhdp8546-core.c   |  197 +--
>  .../drm/bridge/cadence/cdns-mhdp8546-core.h   |    1 -
>  drivers/phy/cadence/Kconfig                   |   16 +
>  drivers/phy/cadence/Makefile                  |    2 +
>  drivers/phy/cadence/phy-cadence-hdptx-dp.c    |  737 ++++++++++++
>  drivers/phy/cadence/phy-cadence-hdptx-hdmi.c  |  891 ++++++++++++++
>  include/drm/bridge/cdns-mhdp-mailbox.h        |  240 ++++
>  include/linux/phy/phy-hdmi.h                  |   38 +
>  include/linux/phy/phy.h                       |    7 +-
>  18 files changed, 4755 insertions(+), 197 deletions(-)
>  create mode 100644
> Documentation/devicetree/bindings/display/bridge/cdns,mhdp-imx8mq-dp.yaml
> create mode 100644
> Documentation/devicetree/bindings/display/bridge/cdns,mhdp-imx8mq-hdmi.yaml
> create mode 100644
> Documentation/devicetree/bindings/phy/cdns,hdptx-dp-phy.yaml create mode
> 100644 Documentation/devicetree/bindings/phy/cdns,hdptx-hdmi-phy.yaml
> create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
>  create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
>  create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.h
>  create mode 100644 drivers/phy/cadence/phy-cadence-hdptx-dp.c
>  create mode 100644 drivers/phy/cadence/phy-cadence-hdptx-hdmi.c
>  create mode 100644 include/drm/bridge/cdns-mhdp-mailbox.h
>  create mode 100644 include/linux/phy/phy-hdmi.h