[v4,12/15] usb: dwc3: Add disabling of start_transfer failure quirk

Message ID 5b030826f0805ff3595eddba149e1e439a3a3de5.1517428812.git.thinhn@synopsys.com
State Not Applicable, archived
Headers show
  • usb: dwc3: Add new updates for DWC_usb31
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Commit Message

Thinh Nguyen Jan. 31, 2018, 9:18 p.m.
In DWC_usb31 version 1.70a-ea06 and prior needs a SW workaround for isoc
START TRANSFER command failure. However, some affected versions may have
RTL patches to fix this without a SW workaround. Add this quirk to
disable the SW workaround when it is not needed.

Synopsys STAR 9001202023: Wrong microframe number for isochronous IN

Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
 Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++
 1 file changed, 3 insertions(+)


diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index e2c1edcd83dd..98b4da23c595 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -15,6 +15,9 @@  Optional properties:
  - phys: from the *Generic PHY* bindings
  - phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy"
 	or "usb3-phy".
+ - snps,dis-start-transfer-quirk: when set, disable isoc START TRANSFER command
+			failure SW work-around for DWC_usb31 version 1.70a-ea06
+			and prior.
  - snps,usb3_lpm_capable: determines if platform is USB3 LPM capable
  - snps,disable_scramble_quirk: true when SW should disable data scrambling.
 	Only really useful for FPGA builds.