Re: [PATCH v2 4/8] dt-bindings: usb: dwc3: Add Amlogic G12A DWC3 Glue Bindings
From: Rob Herring
Date: Tue Mar 12 2019 - 14:29:21 EST
On Mon, 4 Mar 2019 11:38:42 +0100, Neil Armstrong wrote:
> Adds the bindings for the Amlogic G12A USB Glue HW.
>
> The Amlogic G12A SoC Family embeds 2 USB Controllers :
> - a DWC3 IP configured as Host for USB2 and USB3
> - a DWC2 IP configured as Peripheral USB2 Only
>
> A glue connects these both controllers to 2 USB2 PHYs,
> and optionnally to an USB3+PCIE Combo PHY shared with the PCIE controller.
>
> 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.
>
> The PHYs phandles are passed to the Glue node since the Glue controls the
> interface with the PHY, not the DWC3 controller.
>
> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> ---
> .../devicetree/bindings/usb/amlogic,dwc3.txt | 88 +++++++++++++++++++
> 1 file changed, 88 insertions(+)
>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>