dt-bindings: phy: bcm-ns-usb2-phy: convert to yaml

Driver for Broadcom Northstar USB 2.0 PHY

Required properties:

- compatible: brcm,ns-usb2-phy

- reg: iomem address range of DMU (Device Management Unit)

- reg-names: "dmu", the only needed & supported reg right now

- clocks: USB PHY reference clock

- clock-names: "phy-ref-clk", the only needed & supported clock right now

To initialize USB 2.0 PHY driver needs to setup PLL correctly. To do this it

requires passing phandle to the USB PHY reference clock.

Example:

	usb2-phy {

		compatible = "brcm,ns-usb2-phy";

		reg = <0x1800c000 0x1000>;

		reg-names = "dmu";

		#phy-cells = <0>;

		clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;

		clock-names = "phy-ref-clk";

	};

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/phy/bcm-ns-usb2-phy.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Broadcom Northstar USB 2.0 PHY

description: >

  To initialize USB 2.0 PHY driver needs to setup PLL correctly.

  To do this it requires passing phandle to the USB PHY reference clock.

maintainers:

  - Rafał Miłecki <rafal@milecki.pl>

properties:

  compatible:

    const: brcm,ns-usb2-phy

  reg:

    items:

      - description: iomem address range of DMU (Device Management Unit)

  reg-names:

    items:

      - const: dmu

  clocks:

    items:

      - description: USB PHY reference clock

  clock-names:

    items:

      - const: phy-ref-clk

  "#phy-cells":

    const: 0

required:

  - compatible

  - reg

  - reg-names

  - clocks

  - clock-names

  - "#phy-cells"

additionalProperties: false

examples:

  - |

    #include <dt-bindings/clock/bcm-nsp.h>

    phy@1800c000 {

        compatible = "brcm,ns-usb2-phy";

        reg = <0x1800c000 0x1000>;

        reg-names = "dmu";

        clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;

        clock-names = "phy-ref-clk";

        #phy-cells = <0>;

    };