[PATCH 06/11] usb: devicetree: dwc3: Introduce num-lanes and lsm

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Introduce num-lanes and lane-speed-mantissa-gbps for devices operating
in super-speed-plus. DWC_usb32 IP supports multiple lanes and can
operate in different sublink speeds. Currently the device controller
does not have the information of the phy's number of lanes supported. As
a result, the user can specify them through these properties if they are
different than the default setting.

Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/usb/dwc3.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index d03edf9d3935..4eba0615562f 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -86,6 +86,15 @@ Optional properties:
  - snps,quirk-frame-length-adjustment: Value for GFLADJ_30MHZ field of GFLADJ
 	register for post-silicon frame length adjustment when the
 	fladj_30mhz_sdbnd signal is invalid or incorrect.
+ - snps,num-lanes: set to specify the number of lanes to use. Valid inputs are
+			1 or 2. Apply if the maximum-speed is super-speed-plus
+			only. Default value is 2 for DWC_usb32. For DWC_usb31,
+			it is always 1 at super-speed-plus.
+ - snps,lane-speed-mantissa-gbps: set to specify the symmetric lane speed
+			mantissa in Gbps. Valid inputs are 5 or 10. Apply if
+			the maximum-speed is super-speed-plus only. Default
+			value is 10. For DWC_usb31, it's always 10 at
+			super-speed-plus.
  - snps,rx-thr-num-pkt-prd: periodic ESS RX packet threshold count - host mode
 			only. Set this and rx-max-burst-prd to a valid,
 			non-zero value 1-16 (DWC_usb31 programming guide
-- 
2.11.0




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