Re: [PATCH v7 10/14] usb: otg: add hcd companion support
From: Rob Herring <hidden>
Date: 2016-05-04 13:17:09
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On Mon, May 02, 2016 at 03:18:53PM +0300, Roger Quadros wrote:
quoted hunk ↗ jump to hunk
From: Yoshihiro Shimoda <redacted> Since some host controller (e.g. EHCI) needs a companion host controller (e.g. OHCI), this patch adds such a configuration to use it in the OTG core. Signed-off-by: Yoshihiro Shimoda <redacted> Signed-off-by: Roger Quadros <redacted> --- Documentation/devicetree/bindings/usb/generic.txt | 3 +++ drivers/usb/common/usb-otg.c | 32 ++++++++++++++++------- include/linux/usb/otg.h | 7 ++++- 3 files changed, 32 insertions(+), 10 deletions(-)diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt index f6866c1..1db1c33 100644 --- a/Documentation/devicetree/bindings/usb/generic.txt +++ b/Documentation/devicetree/bindings/usb/generic.txt@@ -27,6 +27,9 @@ Optional properties: - otg-controller: phandle to otg controller. Host or gadget controllers can contain this property to link it to a particular OTG controller. + - hcd-needs-companion: must be present if otg controller is dealing with + EHCI host controller that needs a companion OHCI host + controller.
Don't you need to have a link to the companion controller node?
This is an attribute to a USB controller such as:
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