| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/phy/fsl,imx8mq-usb-phy.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Freescale i.MX8MQ USB3 PHY |
| 8 | |
| 9 | maintainers: |
| 10 | - Li Jun <jun.li@nxp.com> |
| 11 | |
| 12 | properties: |
| 13 | compatible: |
| 14 | enum: |
| 15 | - fsl,imx8mq-usb-phy |
| 16 | - fsl,imx8mp-usb-phy |
| 17 | |
| 18 | reg: |
| 19 | maxItems: 1 |
| 20 | |
| 21 | "#phy-cells": |
| 22 | const: 0 |
| 23 | |
| 24 | clocks: |
| 25 | maxItems: 1 |
| 26 | |
| 27 | clock-names: |
| 28 | items: |
| 29 | - const: phy |
| 30 | |
| 31 | power-domains: |
| 32 | maxItems: 1 |
| 33 | |
| 34 | vbus-supply: |
| 35 | description: |
| 36 | A phandle to the regulator for USB VBUS. |
| 37 | |
| 38 | fsl,phy-tx-vref-tune-percent: |
| 39 | description: |
| 40 | Tunes the HS DC level relative to the nominal level |
| 41 | minimum: 94 |
| 42 | maximum: 124 |
| 43 | |
| 44 | fsl,phy-tx-rise-tune-percent: |
| 45 | description: |
| 46 | Adjusts the rise/fall time duration of the HS waveform relative to |
| 47 | its nominal value |
| 48 | minimum: 97 |
| 49 | maximum: 103 |
| 50 | |
| 51 | fsl,phy-tx-preemp-amp-tune-microamp: |
| 52 | description: |
| 53 | Adjust amount of current sourced to DPn and DMn after a J-to-K |
| 54 | or K-to-J transition. Default is 0 (disabled). |
| 55 | minimum: 0 |
| 56 | maximum: 1800 |
| 57 | |
| 58 | fsl,phy-tx-vboost-level-microvolt: |
| 59 | description: |
| 60 | Adjust the boosted transmit launch pk-pk differential amplitude |
| 61 | minimum: 880 |
| 62 | maximum: 1120 |
| 63 | |
| 64 | fsl,phy-comp-dis-tune-percent: |
| 65 | description: |
| 66 | Adjust the voltage level used to detect a disconnect event at the host |
| 67 | relative to the nominal value |
| 68 | minimum: 91 |
| 69 | maximum: 115 |
| 70 | |
| 71 | fsl,phy-pcs-tx-deemph-3p5db-attenuation-db: |
| 72 | description: |
| 73 | Adjust TX de-emphasis attenuation in dB at nominal |
| 74 | 3.5dB point as per USB specification |
| 75 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 76 | minimum: 0 |
| 77 | maximum: 36 |
| 78 | |
| 79 | fsl,phy-pcs-tx-swing-full-percent: |
| 80 | description: |
| 81 | Scaling of the voltage defined by fsl,phy-tx-vboost-level-microvolt |
| 82 | minimum: 0 |
| 83 | maximum: 100 |
| 84 | |
| 85 | required: |
| 86 | - compatible |
| 87 | - reg |
| 88 | - "#phy-cells" |
| 89 | - clocks |
| 90 | - clock-names |
| 91 | |
| 92 | additionalProperties: false |
| 93 | |
| 94 | examples: |
| 95 | - | |
| 96 | #include <dt-bindings/clock/imx8mq-clock.h> |
| 97 | usb3_phy0: phy@381f0040 { |
| 98 | compatible = "fsl,imx8mq-usb-phy"; |
| 99 | reg = <0x381f0040 0x40>; |
| 100 | clocks = <&clk IMX8MQ_CLK_USB1_PHY_ROOT>; |
| 101 | clock-names = "phy"; |
| 102 | #phy-cells = <0>; |
| 103 | }; |