From 6c0f34fb0f83741f7f03f6bfd3fcbc89cb2c7cde Mon Sep 17 00:00:00 2001 From: Jonathan Bell Date: Wed, 6 Nov 2024 10:26:55 +0000 Subject: [PATCH] dt-bindings: usb: snps,dwc3: add FS/HS periodic NAK polling quirk Add two quirk properties that control whether or not the controller issues many more handshakes to FS/HS Async endpoints in a single (micro)frame. Enabling these can significantly increase throughput for endpoints that frequently respond with NAKs. Signed-off-by: Jonathan Bell --- Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -231,6 +231,16 @@ properties: description: When set, disable u2mac linestate check during HS transmit type: boolean + snps,enhanced-nak-fs-quirk: + description: + When set, the controller schedules many more handshakes to Async FS + endpoints, improving throughput when they frequently respond with NAKs. + + snps,enhanced-nak-hs-quirk: + description: + When set, the controller schedules many more handshakes to Async HS + endpoints, improving throughput when they frequently respond with NAKs. + snps,parkmode-disable-ss-quirk: description: When set, disable park mode for all Superspeed bus instances.