Messages in this thread | | | Subject | Re: [PATCH v8 10/14] usb: otg: add hcd companion support | From | Roger Quadros <> | Date | Mon, 16 May 2016 11:12:26 +0300 |
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On 13/05/16 21:13, Rob Herring wrote: > On Fri, May 13, 2016 at 5:03 AM, Roger Quadros <rogerq@ti.com> wrote: >> From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> >> >> 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 <yoshihiro.shimoda.uh@renesas.com> >> Signed-off-by: Roger Quadros <rogerq@ti.com> >> Acked-by: Peter Chen <peter.chen@nxp.com> >> --- >> 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. > > I thought the conclusion was this is not needed?
This is still needed to differentiate between primary+shared HCD case vs primary + primary-companion HCD case.
> > One thing that is not clear here is otg-controller is a host or device > property while hcd-needs-companion is an OTG controller property. > These lists should be separated.
Agreed. I'll fix that up.
cheers, -roger
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