[PATCH 08/15] usb: dwc3: Make RX/TX threshold configurable

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DWC_usb31 periodic transfer at 48K+ bytes per interval may need
modification to the TX/RX packet threshold to achieve optimal result.
Add properties to make it configurable.

Cc: John Youn <johnyoun@xxxxxxxxxxxx>
Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/usb/dwc3.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 52fb41046b34..02dde83d02fa 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -55,6 +55,12 @@ 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,rx_thr_sel_prd: set to enable periodic ESS RX packet threshold.
+ - snps,rx_thr_num_pkt_prd: periodic ESS RX packet threshold count.
+ - snps,rx_max_burst_prd: Max periodic ESS RX burst size.
+ - snps,tx_thr_sel_prd: set to enable periodic ESS TX packet threshold.
+ - snps,tx_thr_num_pkt_prd: periodic ESS TX packet threshold count.
+ - snps,tx_max_burst_prd: Max periodic ESS TX burst size.
 
  - <DEPRECATED> tx-fifo-resize: determines if the FIFO *has* to be reallocated.
 
-- 
2.11.0

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