[PATCH v2 1/2] dt-bindings: phy: Add support for the USB3 PHY on Amlogic Meson GXL SoCs

Rob Herring robh at kernel.org
Mon Jan 29 08:08:29 PST 2018

On Sun, Jan 28, 2018 at 09:15:53PM +0100, Martin Blumenstingl wrote:
> Amlogic Meson GXL SoCs use a dwc3 controller with two (GXM - a variant
> for GXL, has three) USB2 ports. The first USB2 port supports host and
> peripheral (also called "device") mode.
> While the dwc3 controller has no USB3 port enabled we still need the
> USB3 PHY to be initialized. Otherwise high-speed USB transfers (for
> example with a USB flash drive) may time out (most often seen on boards
> with mainline u-boot, where the bootloader does not initialize the USB3
> PHY registers).
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com>
> ---
>  .../devicetree/bindings/phy/meson-gxl-usb3-phy.txt | 31 ++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt

Reviewed-by: Rob Herring <robh at kernel.org>

More information about the linux-amlogic mailing list