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dt-bindings: usb: usb-nop-xceiv: Convert to DT schema

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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>
This commit is contained in:
Rob Herring 2021-03-27 15:28:16 -05:00 committed by Greg Kroah-Hartman
parent cc27bb4e7f
commit 487adc545b
2 changed files with 64 additions and 43 deletions
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43
Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
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USB NOP PHY
Required properties:
- compatible: should be usb-nop-xceiv
- #phy-cells: Must be 0
Optional properties:
- clocks: phandle to the PHY clock. Use as per Documentation/devicetree
/bindings/clock/clock-bindings.txt
This property is required if clock-frequency is specified.
- clock-names: Should be "main_clk"
- clock-frequency: the clock frequency (in Hz) that the PHY clock must
be configured to.
- vcc-supply: phandle to the regulator that provides power to the PHY.
- reset-gpios: Should specify the GPIO for reset.
- vbus-detect-gpio: should specify the GPIO detecting a VBus insertion
(see Documentation/devicetree/bindings/gpio/gpio.txt)
- vbus-regulator : should specifiy the regulator supplying current drawn from
the VBus line (see Documentation/devicetree/bindings/regulator/regulator.txt).
Example:
hsusb1_phy {
compatible = "usb-nop-xceiv";
clock-frequency = <19200000>;
clocks = <&osc 0>;
clock-names = "main_clk";
vcc-supply = <&hsusb1_vcc_regulator>;
reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
vbus-detect-gpio = <&gpio2 13 GPIO_ACTIVE_HIGH>;
vbus-regulator = <&vbus_regulator>;
#phy-cells = <0>;
};
hsusb1_phy is a NOP USB PHY device that gets its clock from an oscillator
and expects that clock to be configured to 19.2MHz by the NOP PHY driver.
hsusb1_vcc_regulator provides power to the PHY and GPIO 7 controls RESET.
GPIO 13 detects VBus insertion, and accordingly notifies the vbus-regulator.

64
Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml Normal file
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/usb-nop-xceiv.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: USB NOP PHY
maintainers:
- Rob Herring <robh@kernel.org>
properties:
compatible:
const: usb-nop-xceiv
clocks:
maxItems: 1
clock-names:
const: main_clk
clock-frequency: true
'#phy-cells':
const: 0
vcc-supply:
description: phandle to the regulator that provides power to the PHY.
reset-gpios:
maxItems: 1
vbus-detect-gpio:
description: Should specify the GPIO detecting a VBus insertion
maxItems: 1
vbus-regulator:
description: Should specifiy the regulator supplying current drawn from
the VBus line.
$ref: /schemas/types.yaml#/definitions/phandle
required:
- compatible
- '#phy-cells'
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
hsusb1_phy {
compatible = "usb-nop-xceiv";
clock-frequency = <19200000>;
clocks = <&osc 0>;
clock-names = "main_clk";
vcc-supply = <&hsusb1_vcc_regulator>;
reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
vbus-detect-gpio = <&gpio2 13 GPIO_ACTIVE_HIGH>;
vbus-regulator = <&vbus_regulator>;
#phy-cells = <0>;
};
...