diff options
| author | Peter Chen <peter.chen@nxp.com> | 2018-08-21 17:15:36 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@nxp.com> | 2020-02-16 20:42:14 +0800 |
| commit | 91cd1c34b4d845483b1dc4e6fe3ab86c6b25c763 (patch) | |
| tree | 081291134aeabb44bb1039b3f047ab9113b3e593 /Documentation/devicetree/bindings/usb | |
| parent | 613c2577504a199bb43ca3cc73db8535dc44c3b4 (diff) | |
MLK-23319-2 doc: dts: ci-hdrc-usb2: add property for imx picophy
Add two parameters which are used to tune USB signal for imx picophy,
picophy is used at imx7d and imx8mm.
Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'Documentation/devicetree/bindings/usb')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt index c2d72c8fe6a0..5dc237f59940 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt @@ -97,6 +97,13 @@ i.mx specific properties It's recommended to specify the over current polarity. - power-active-high: power signal polarity is active high - external-vbus-divider: enables off-chip resistor divider for Vbus +- picophy,pre-emp-curr-control: HS Transmitter Pre-Emphasis Current + Control. This signal controls the amount of current sourced to the + USB_OTG*_DP and USB_OTG*_DN pins after a J-to-K or K-to-J transition. + Details can refer to TXPREEMPAMPTUNE0 bits of USBNC_n_PHY_CFG1. +- picophy,dc-vol-level-adjust: HS DC Voltage Level Adjustment. + Adjust the high-speed transmitter DC level voltage, details can refer + to TXVREFTUNE0 bits of USBNC_n_PHY_CFG1. Example: |