Thread (1 message) 1 message, 1 author, 2017-08-17

Re: [RFCv3 usb-next 3/3] usb: host: xhci: plat: integrate the platform-roothub

From: Rob Herring <hidden>
Date: 2017-08-17 15:15:06
Also in: linux-amlogic

On Tue, Aug 15, 2017 at 12:45:42AM +0200, Martin Blumenstingl wrote:
This enables the platform-roothub for the xhci-plat driver. This allows
specifying a PHY for each port via devicetree. All PHYs will then be
enabled/disabled by the platform-roothub driver.

One example where this is required is the Amlogic GXL and GXM SoCs:
They are using a dwc3 USB controller with up to three ports enabled on
the internal roothub. Using only the top-level "phy" properties does not
work here since one can only specify one "usb2-phy" and one "usb3-phy",
while actually at least two "usb2-phy" have to be specified.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
---
 Documentation/devicetree/bindings/usb/usb-xhci.txt |  7 +++++
This can be part of the binding patch. Otherwise,

Acked-by: Rob Herring <redacted>
 drivers/usb/host/Kconfig                           |  1 +
 drivers/usb/host/xhci-plat.c                       | 35 ++++++++++++++++++++--
 drivers/usb/host/xhci.h                            |  2 ++
 4 files changed, 43 insertions(+), 2 deletions(-)
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