linux-kernel - Re: [PATCH v5 0/8] arm64: meson: Add support for USB on Amlogic G12A

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Date:   Mon, 8 Apr 2019 11:38:17 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     gregkh@...uxfoundation.org, hminas@...opsys.com, balbi@...nel.org
Cc:     kishon@...com, linux-amlogic@...ts.infradead.org,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/8] arm64: meson: Add support for USB on Amlogic G12A

Hi Greg, Felipe, Minas,

Gentle ping about these remaining patches, who is supposed to
pick them ?

Thanks,
Neil

On 25/03/2019 10:39, Neil Armstrong wrote:
> This patchset adds support for USB on Amlogic G12A SoCs.
> 
> This patchset is composed with :
> - bindings of the PHYs
> - bindings of the USB Control Glue
> - PHY Drivers
> - USB Control Glue driver
> 
> Device Tree nodes will be added in a separate patchset.
> 
> The Amlogic G12A USB Complex is composed of :
> - 2 USB Controllers :
>  * DWC3 for USB2 and USB3 Host functionality
>  * DWC2 for USB2 Peripheral functionality
> - 2 USB2 OTG PHYs, only a single one will be routed to either DWC2 to DWC3
> - 1 USB3 PHY shared with PCIE funcionnality
> - A Glue to control PHY routing, setup and OTG detection
> 
> The Glue configures the UTMI 8bit interfaces for the USB2 PHYs, including
> routing of the OTG PHY between the DWC3 and DWC2 controllers, and
> setups the on-chip OTG mode selection for this PHY.
> 
> This drivers supports the on-probe setup of the OTG mode, and manually
> via the USB Role interface. The IRQ mode change detect is yet to be added
> in a future patchset, mainly due to lack of hardware to validate on.
> 
> Changes since v4 at [3]:
> - remove remaining phy_put/clk_put() of patch 8
> - handled phy_power_off/on() in suspend/resume
> - Collected review tag on patch 8
> 
> Changes since v3 at [2]:
> - Documented and replaced magic values in USB2 PHY driver
> 
> Changes since v2 at [1]:
> - Collected review tags
> - Removed syscon.h in usb2 phy driver
> - Added comment on the USB3/PCIe switch
> - Renamed dwc3_meson_g12a_usb_init_mode in glue driver
> - Changed indentation in dwc3_meson_g12a_role_set
> - Switched to of_get_compatible_child in glue code
> - Added devm_add_action_or_reset() to disable clock in case of probe failure
> - Checks priv->vbus before enabling regulator
> - Switched phy_init/phy_power_on
> - Removed priv->phys[i] NULL checks in suspend code
> - Removed clk_disable_unprepare/clk_put in remove code
> 
> Changes since v1 at [0]:
>  - USB2 PHY Bindings: collected tags and updated commit log
>  - USB3/PCIE PHY Bindings: collected tag and updated reset list
>  - DWC2 Compatible: collected tags
>  - DWC3 Glue Bindings:
>    - removed clock-names and reset-names for single entries
>    - removed ports graph for PHYs and replaced by phys list with phy-names
>    - added dr_mode and optional vbus-supply
>    - fixed example
>  - USB2 PHY Driver: removed USB_SUPPORT and otg.h include
>  - USB3/PCIE PHY Driver: removed USB_SUPPORT, fixed comment and unused reg variable
>  - USB Glue Driver:
>    - Moved debugfs I/F to USB_ROLE_SWITCH framework
>    - Integrated USB Glue Control Registers offset
>    - Removed of graph parsing to use devm_phy_optional_get()
>    - Fixed PHY mode handling and OTG switching
>    - Simplified PHY calls by removing the NULL test
>    - Added optional vbus regulator handling
> 
> [1] https://lkml.kernel.org/r/20190212151413.24632-1-narmstrong@baylibre.com
> [2] https://lkml.kernel.org/r/20190304103846.2060-1-narmstrong@baylibre.com
> [3] https://lkml.kernel.org/r/20190318101153.7531-1-narmstrong@baylibre.com
> [4] https://lkml.kernel.org/r/20190318132655.30040-1-narmstrong@baylibre.com
> 
> Neil Armstrong (8):
>   dt-bindings: phy: Add Amlogic G12A USB2 PHY Bindings
>   dt-bindings: phy: Add Amlogic G12A USB3+PCIE Combo PHY Bindings
>   dt-bindings: usb: dwc2: Add Amlogic G12A DWC2 Compatible
>   dt-bindings: usb: dwc3: Add Amlogic G12A DWC3 Glue Bindings
>   phy: amlogic: add Amlogic G12A USB2 PHY Driver
>   phy: amlogic: Add Amlogic G12A USB3 + PCIE Combo PHY Driver
>   usb: dwc2: Add Amlogic G12A DWC2 Params
>   usb: dwc3: Add Amlogic G12A DWC3 glue
> 
>  .../bindings/phy/meson-g12a-usb2-phy.txt      |  22 +
>  .../bindings/phy/meson-g12a-usb3-pcie-phy.txt |  22 +
>  .../devicetree/bindings/usb/amlogic,dwc3.txt  |  88 +++
>  .../devicetree/bindings/usb/dwc2.txt          |   1 +
>  drivers/phy/amlogic/Kconfig                   |  22 +
>  drivers/phy/amlogic/Makefile                  |   2 +
>  drivers/phy/amlogic/phy-meson-g12a-usb2.c     | 341 ++++++++++
>  .../phy/amlogic/phy-meson-g12a-usb3-pcie.c    | 413 ++++++++++++
>  drivers/usb/dwc2/params.c                     |  12 +
>  drivers/usb/dwc3/Kconfig                      |  10 +
>  drivers/usb/dwc3/Makefile                     |   1 +
>  drivers/usb/dwc3/dwc3-meson-g12a.c            | 604 ++++++++++++++++++
>  12 files changed, 1538 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/meson-g12a-usb2-phy.txt
>  create mode 100644 Documentation/devicetree/bindings/phy/meson-g12a-usb3-pcie-phy.txt
>  create mode 100644 drivers/phy/amlogic/phy-meson-g12a-usb2.c
>  create mode 100644 drivers/phy/amlogic/phy-meson-g12a-usb3-pcie.c
>  create mode 100644 drivers/usb/dwc3/dwc3-meson-g12a.c
>