On 23-06-27 19:21:25, Xu Yang wrote: > The fsl,picophy-rise-fall-time-adjust property can help to adjust the > rise/fall times of the high-speed transmitter waveform. The value can be > 0~3. It has no unit. According to the description of USBNC_n_PHY_CFG1 > register, the rise/fall time will be increased or decreased by a certain > percentage relative to design default time if a value is given to this > property. > > Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx> Acked-by: Peter Chen <peter.chen@xxxxxxxxxx> Peter > > --- > Changes in v2: > - rename property to fsl,picophy-rise-fall-time-adjust > - add default: 1 > - add some description in yaml and commit msg > --- > .../devicetree/bindings/usb/ci-hdrc-usb2.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml > index 782402800d4a..532d6464c8b3 100644 > --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml > +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml > @@ -292,6 +292,18 @@ properties: > minimum: 0x0 > maximum: 0xf > > + fsl,picophy-rise-fall-time-adjust: > + description: > + HS Transmitter Rise/Fall Time Adjustment. Adjust the rise/fall times > + of the high-speed transmitter waveform. It has no unit. The rise/fall > + time will be increased or decreased by a certain percentage relative > + to design default time. (0:-10%; 1:design default; 2:+15%; 3:+20%) > + Details can refer to TXRISETUNE0 bit of USBNC_n_PHY_CFG1. > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 3 > + default: 1 > + > usb-phy: > description: phandle for the PHY device. Use "phys" instead. > $ref: /schemas/types.yaml#/definitions/phandle > -- > 2.34.1 > -- Thanks, Peter Chen
