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dt-bindings: usb: ci-hdrc-usb2: add fsl,picophy-rise-fall-time-adjust property

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@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20230627112126.1882666-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

authored by

Xu Yang and committed by
Greg Kroah-Hartman 8d2c452c 36668515

+12
+12
Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
··· 292 292 minimum: 0x0 293 293 maximum: 0xf 294 294 295 + fsl,picophy-rise-fall-time-adjust: 296 + description: 297 + HS Transmitter Rise/Fall Time Adjustment. Adjust the rise/fall times 298 + of the high-speed transmitter waveform. It has no unit. The rise/fall 299 + time will be increased or decreased by a certain percentage relative 300 + to design default time. (0:-10%; 1:design default; 2:+15%; 3:+20%) 301 + Details can refer to TXRISETUNE0 bit of USBNC_n_PHY_CFG1. 302 + $ref: /schemas/types.yaml#/definitions/uint32 303 + minimum: 0 304 + maximum: 3 305 + default: 1 306 + 295 307 usb-phy: 296 308 description: phandle for the PHY device. Use "phys" instead. 297 309 $ref: /schemas/types.yaml#/definitions/phandle