PIPE4 spec defines an 18bit de-emphasis setting to be passed from
controller to the PHY.
TxDeemph[17:0] is split as [5:0] C-1, [11:6] C0, [17:12] C+1 for 3 tap
filter used for USB Gen2(10GT/s).
Signed-off-by: Joy Chakraborty <joychakr@xxxxxxxxxx>
---
Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index 1cd0ca90127d..a1f1bbcf1467 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -190,6 +190,18 @@ properties:
- 1 # -3.5dB de-emphasis
- 2 # No de-emphasis
+ snps,tx_gen2_de_emphasis_quirk:
+ description: When set core will set Tx de-emphasis for USB Gen2
+ type: boolean
+
+ snps,tx_gen2_de_emphasis:
+ description:
+ The 18bit value of Tx deemphasis defined in PIPE4 spec driven to PHY
+ for normal operation.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 0x3ffff
+
snps,dis_u3_susphy_quirk:
description: When set core will disable USB3 suspend phy
type: boolean
--
2.47.0.rc0.187.ge670bccf7e-goog
