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dt-bindings: usb: usb-nop-xceiv: Convert to DT schema
Convert the usb-nop-xceiv binding to DT schema. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210327202816.545282-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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USB NOP PHY
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Required properties:
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- compatible: should be usb-nop-xceiv
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- #phy-cells: Must be 0
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Optional properties:
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- clocks: phandle to the PHY clock. Use as per Documentation/devicetree
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/bindings/clock/clock-bindings.txt
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This property is required if clock-frequency is specified.
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- clock-names: Should be "main_clk"
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- clock-frequency: the clock frequency (in Hz) that the PHY clock must
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be configured to.
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- vcc-supply: phandle to the regulator that provides power to the PHY.
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- reset-gpios: Should specify the GPIO for reset.
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- vbus-detect-gpio: should specify the GPIO detecting a VBus insertion
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(see Documentation/devicetree/bindings/gpio/gpio.txt)
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- vbus-regulator : should specifiy the regulator supplying current drawn from
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the VBus line (see Documentation/devicetree/bindings/regulator/regulator.txt).
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Example:
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hsusb1_phy {
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compatible = "usb-nop-xceiv";
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clock-frequency = <19200000>;
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clocks = <&osc 0>;
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clock-names = "main_clk";
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vcc-supply = <&hsusb1_vcc_regulator>;
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reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
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vbus-detect-gpio = <&gpio2 13 GPIO_ACTIVE_HIGH>;
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vbus-regulator = <&vbus_regulator>;
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#phy-cells = <0>;
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};
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hsusb1_phy is a NOP USB PHY device that gets its clock from an oscillator
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and expects that clock to be configured to 19.2MHz by the NOP PHY driver.
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hsusb1_vcc_regulator provides power to the PHY and GPIO 7 controls RESET.
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GPIO 13 detects VBus insertion, and accordingly notifies the vbus-regulator.
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64
Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml
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64
Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/usb/usb-nop-xceiv.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: USB NOP PHY
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maintainers:
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- Rob Herring <robh@kernel.org>
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properties:
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compatible:
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const: usb-nop-xceiv
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clocks:
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maxItems: 1
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clock-names:
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const: main_clk
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clock-frequency: true
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'#phy-cells':
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const: 0
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vcc-supply:
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description: phandle to the regulator that provides power to the PHY.
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reset-gpios:
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maxItems: 1
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vbus-detect-gpio:
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description: Should specify the GPIO detecting a VBus insertion
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maxItems: 1
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vbus-regulator:
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description: Should specifiy the regulator supplying current drawn from
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the VBus line.
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$ref: /schemas/types.yaml#/definitions/phandle
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required:
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- compatible
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- '#phy-cells'
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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hsusb1_phy {
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compatible = "usb-nop-xceiv";
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clock-frequency = <19200000>;
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clocks = <&osc 0>;
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clock-names = "main_clk";
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vcc-supply = <&hsusb1_vcc_regulator>;
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reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
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vbus-detect-gpio = <&gpio2 13 GPIO_ACTIVE_HIGH>;
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vbus-regulator = <&vbus_regulator>;
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#phy-cells = <0>;
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};
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...
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