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.an...@st.com>
> ---
> 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 ? Another is to ask Paul :-) Hey Paul, do you know if there's a way to detect in runtime if $this dwc3 implementation was configured with LPM enabled ? -- balbi
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