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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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7325e0995f
The parameter value of below 3 properties are USB PHY specific. i.MX8MP and i.MX95 USB PHY has different meanings. This will enlarge parameters value and add constraints for them. - fsl,phy-tx-vref-tune-percent - fsl,phy-tx-rise-tune-percent - fsl,phy-comp-dis-tune-percent Reviewed-by: Jun Li <jun.li@nxp.com> Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250430094502.2723983-2-xu.yang_2@nxp.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
160 lines
3.4 KiB
YAML
160 lines
3.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/phy/fsl,imx8mq-usb-phy.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Freescale i.MX8MQ USB3 PHY
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maintainers:
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- Li Jun <jun.li@nxp.com>
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properties:
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compatible:
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oneOf:
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- enum:
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- fsl,imx8mq-usb-phy
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- fsl,imx8mp-usb-phy
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- items:
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- const: fsl,imx95-usb-phy
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- const: fsl,imx8mp-usb-phy
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reg:
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minItems: 1
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maxItems: 2
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"#phy-cells":
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const: 0
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clocks:
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maxItems: 1
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clock-names:
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items:
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- const: phy
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power-domains:
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maxItems: 1
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vbus-supply:
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description:
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A phandle to the regulator for USB VBUS.
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fsl,phy-tx-vref-tune-percent:
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description:
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Tunes the HS DC level relative to the nominal level
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minimum: 90
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maximum: 124
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fsl,phy-tx-rise-tune-percent:
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description:
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Adjusts the rise/fall time duration of the HS waveform relative to
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its nominal value
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minimum: 90
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maximum: 120
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fsl,phy-tx-preemp-amp-tune-microamp:
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description:
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Adjust amount of current sourced to DPn and DMn after a J-to-K
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or K-to-J transition. Default is 0 (disabled).
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minimum: 0
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maximum: 1800
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fsl,phy-tx-vboost-level-microvolt:
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description:
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Adjust the boosted transmit launch pk-pk differential amplitude
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enum: [844, 1008, 1156]
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fsl,phy-comp-dis-tune-percent:
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description:
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Adjust the voltage level used to detect a disconnect event at the host
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relative to the nominal value
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minimum: 91
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maximum: 115
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fsl,phy-pcs-tx-deemph-3p5db-attenuation-db:
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description:
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Adjust TX de-emphasis attenuation in dB at nominal
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3.5dB point as per USB specification
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 36
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fsl,phy-pcs-tx-swing-full-percent:
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description:
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Scaling of the voltage defined by fsl,phy-tx-vboost-level-microvolt
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minimum: 0
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maximum: 100
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required:
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- compatible
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- reg
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- "#phy-cells"
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- clocks
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- clock-names
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allOf:
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- if:
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properties:
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compatible:
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contains:
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enum:
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- fsl,imx95-usb-phy
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then:
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properties:
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reg:
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items:
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- description: USB PHY Control range
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- description: USB PHY TCA Block range
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else:
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properties:
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reg:
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maxItems: 1
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- if:
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properties:
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compatible:
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enum:
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- fsl,imx8mq-usb-phy
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- fsl,imx8mp-usb-phy
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then:
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properties:
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fsl,phy-tx-vref-tune-percent:
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minimum: 94
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fsl,phy-tx-rise-tune-percent:
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minimum: 97
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maximum: 103
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- if:
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properties:
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compatible:
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contains:
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enum:
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- fsl,imx95-usb-phy
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then:
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properties:
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fsl,phy-tx-vref-tune-percent:
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maximum: 108
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fsl,phy-comp-dis-tune-percent:
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minimum: 94
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maximum: 104
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- if:
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required:
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- orientation-switch
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then:
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$ref: /schemas/usb/usb-switch.yaml#
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/clock/imx8mq-clock.h>
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usb3_phy0: phy@381f0040 {
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compatible = "fsl,imx8mq-usb-phy";
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reg = <0x381f0040 0x40>;
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clocks = <&clk IMX8MQ_CLK_USB1_PHY_ROOT>;
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clock-names = "phy";
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#phy-cells = <0>;
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};
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