dt-bindings: usb: samsung,exynos-usb2: convert to dtschema
Convert the Samsung Exynos SoC USB 2.0 EHCI and OHCI Controller bindings to DT schema format. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20220302190938.6195-3-krzysztof.kozlowski@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Krzysztof Kozlowski
Greg Kroah-Hartman
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2 changed files with 117 additions and 66 deletions
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Samsung Exynos SoC USB controller
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The USB devices interface with USB controllers on Exynos SOCs.
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The device node has following properties.
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EHCI
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Required properties:
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- compatible: should be "samsung,exynos4210-ehci" for USB 2.0
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EHCI controller in host mode.
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- reg: physical base address of the controller and length of memory mapped
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region.
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- interrupts: interrupt number to the cpu.
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- clocks: from common clock binding: handle to usb clock.
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- clock-names: from common clock binding: Shall be "usbhost".
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- phys: from the *Generic PHY* bindings; array specifying phy(s) used
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by the root port.
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- phy-names: from the *Generic PHY* bindings; array of the names for
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each phy for the root ports, must be a subset of the following:
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"host", "hsic0", "hsic1".
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Optional properties:
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- samsung,vbus-gpio: if present, specifies the GPIO that
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needs to be pulled up for the bus to be powered.
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Example:
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usb@12110000 {
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compatible = "samsung,exynos4210-ehci";
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reg = <0x12110000 0x100>;
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interrupts = <0 71 0>;
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samsung,vbus-gpio = <&gpx2 6 1 3 3>;
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clocks = <&clock 285>;
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clock-names = "usbhost";
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phys = <&usb2phy 1>;
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phy-names = "host";
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};
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OHCI
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Required properties:
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- compatible: should be "samsung,exynos4210-ohci" for USB 2.0
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OHCI companion controller in host mode.
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- reg: physical base address of the controller and length of memory mapped
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region.
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- interrupts: interrupt number to the cpu.
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- clocks: from common clock binding: handle to usb clock.
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- clock-names: from common clock binding: Shall be "usbhost".
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- phys: from the *Generic PHY* bindings; array specifying phy(s) used
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by the root port.
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- phy-names: from the *Generic PHY* bindings; array of the names for
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each phy for the root ports, must be a subset of the following:
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"host", "hsic0", "hsic1".
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Example:
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usb@12120000 {
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compatible = "samsung,exynos4210-ohci";
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reg = <0x12120000 0x100>;
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interrupts = <0 71 0>;
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clocks = <&clock 285>;
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clock-names = "usbhost";
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phys = <&usb2phy 1>;
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phy-names = "host";
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};
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117
Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml
Normal file
117
Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml
Normal file
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# 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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$id: http://devicetree.org/schemas/usb/samsung,exynos-usb2.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung Exynos SoC USB 2.0 EHCI/OHCI Controller
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maintainers:
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- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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properties:
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compatible:
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enum:
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- samsung,exynos4210-ehci
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- samsung,exynos4210-ohci
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'#address-cells':
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const: 1
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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: usbhost
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interrupts:
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maxItems: 1
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phys:
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minItems: 1
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maxItems: 3
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phy-names:
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items:
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enum: [host, hsic0, hsic1]
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minItems: 1
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maxItems: 3
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reg:
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maxItems: 1
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samsung,vbus-gpio:
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description:
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Only for controller in EHCI mode, if present, specifies the GPIO that
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needs to be pulled up for the bus to be powered.
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'#size-cells':
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const: 0
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patternProperties:
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"^.*@[0-9a-f]{1,2}$":
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description: The hard wired USB devices
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type: object
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$ref: /usb/usb-device.yaml
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required:
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- compatible
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- clocks
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- clock-names
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- interrupts
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- phys
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- phy-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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const: samsung,exynos4210-ohci
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then:
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properties:
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samsung,vbus-gpio: false
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/exynos5420.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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usb@12110000 {
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compatible = "samsung,exynos4210-ehci";
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reg = <0x12110000 0x100>;
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interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&clock CLK_USBH20>;
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clock-names = "usbhost";
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phys = <&usb2_phy 0>;
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phy-names = "host";
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#address-cells = <1>;
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#size-cells = <0>;
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hub@1 {
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compatible = "usb0424,9514";
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reg = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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usbether@1 {
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compatible = "usb0424,ec00";
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reg = <1>;
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local-mac-address = [00 00 00 00 00 00];
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};
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};
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};
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usb@12120000 {
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compatible = "samsung,exynos4210-ohci";
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reg = <0x12120000 0x100>;
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interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&clock CLK_USBH20>;
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clock-names = "usbhost";
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phys = <&usb2_phy 0>;
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phy-names = "host";
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};
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