On Fri, Apr 11, 2014 at 11:36:18PM +0530, Pratyush Anand wrote:
> On Fri, Apr 11, 2014 at 11:24 PM, Felipe Balbi <balbi@xxxxxx> wrote:
> > On Fri, Apr 11, 2014 at 03:50:03PM +0530, Pratyush Anand wrote:
> >> If a dwc3 host implementation is lpm capable then enable lpm_capable in
> >> device tree.
> >>
> >> Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
> >> ---
> >> Documentation/devicetree/bindings/usb/dwc3.txt | 2 ++
> >> 1 file changed, 2 insertions(+)
> >>
> >> diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
> >> index 7a95c65..a7a48f1 100644
> >> --- a/Documentation/devicetree/bindings/usb/dwc3.txt
> >> +++ b/Documentation/devicetree/bindings/usb/dwc3.txt
> >> @@ -10,6 +10,7 @@ Required properties:
> >>
> >> Optional properties:
> >> - tx-fifo-resize: determines if the FIFO *has* to be reallocated.
> >> + - lpm-capable: determines if xhci host is lpm capable
> >>
> >> This is usually a subnode to DWC3 glue to which it is connected.
> >>
> >> @@ -19,4 +20,5 @@ dwc3@4a030000 {
> >> interrupts = <0 92 4>
> >> usb-phy = <&usb2_phy>, <&usb3,phy>;
> >> tx-fifo-resize;
> >> + lpm-capable;
> >
> > I think there's a way to detect this in runtime but I can't seem to find
> > it on databook. Perhaps check with your IP designer/integrator which
> > HWPARAMS register we can poke to verify core was configured with LPM ?
>
> I too tried to look into databook first, But could not find. Lets see,
> what Paul says.
I found a few mentions of "if HW LPM is enabled" which hints that there
is a way to enable/disable LPM in coreConsultant and I find it weird
that Synopsys didn't add such flag to HWPARAMS*.
Anyway, Paul to the rescue :-)
--
balbi
Attachment:
signature.asc
Description: Digital signature
