usb: dwc3: define ScaleDown macro helper

We must ensure that those bits aren't set as
they should only be used in simulation.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index e149f57..92673fd 100644 (file)
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -160,6 +160,7 @@
 #define DWC3_GCTL_PRTCAP_OTG   3
 
 #define DWC3_GCTL_CORESOFTRESET        (1 << 11)
+#define DWC3_GCTL_SCALEDOWN(n) (n << 4)
 #define DWC3_GCTL_DISSCRAMBLE  (1 << 3)
 
 /* Global USB2 PHY Configuration Register */