xref: /linux/Documentation/devicetree/bindings/phy/samsung,usb2-phy.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/phy/samsung,usb2-phy.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Samsung S5P/Exynos SoC USB 2.0 PHY
8
9maintainers:
10  - Krzysztof Kozlowski <krzk@kernel.org>
11  - Marek Szyprowski <m.szyprowski@samsung.com>
12  - Sylwester Nawrocki <s.nawrocki@samsung.com>
13
14description: |
15  The first phandle argument in the PHY specifier identifies the PHY, its
16  meaning is compatible dependent. For the currently supported SoCs (Exynos4210
17  and Exynos4212) it is as follows::
18    0 - USB device ("device"),
19    1 - USB host ("host"),
20    2 - HSIC0 ("hsic0"),
21    3 - HSIC1 ("hsic1"),
22  Exynos3250 has only USB device phy available as phy 0.
23
24  Exynos4210 and Exynos4212 use mode switching and require that mode switch
25  register is supplied.
26
27properties:
28  compatible:
29    enum:
30      - samsung,exynos3250-usb2-phy
31      - samsung,exynos4210-usb2-phy
32      - samsung,exynos4x12-usb2-phy
33      - samsung,exynos5250-usb2-phy
34      - samsung,exynos5420-usb2-phy
35      - samsung,s5pv210-usb2-phy
36
37  clocks:
38    items:
39      - description: PHY module gate clock.
40      - description: Reference rate clock of PHY module.
41
42  clock-names:
43    items:
44      - const: phy
45      - const: ref
46
47  "#phy-cells":
48    const: 1
49
50  reg:
51    maxItems: 1
52
53  samsung,pmureg-phandle:
54    $ref: /schemas/types.yaml#/definitions/phandle
55    description:
56      Phandle to PMU system controller interface.
57
58  samsung,sysreg-phandle:
59    $ref: /schemas/types.yaml#/definitions/phandle
60    description:
61      Phandle to system registers interface.
62
63  vbus-supply:
64    description:
65      VBUS power source.
66
67required:
68  - compatible
69  - clocks
70  - clock-names
71  - "#phy-cells"
72  - reg
73  - samsung,pmureg-phandle
74
75allOf:
76  - if:
77      properties:
78        compatible:
79          contains:
80            enum:
81              - samsung,exynos4x12-usb2-phy
82              - samsung,exynos5250-usb2-phy
83              - samsung,exynos5420-usb2-phy
84    then:
85      required:
86        - samsung,sysreg-phandle
87
88additionalProperties: false
89
90examples:
91  - |
92    #include <dt-bindings/clock/exynos5420.h>
93
94    phy@12130000 {
95        compatible = "samsung,exynos5420-usb2-phy";
96        reg = <0x12130000 0x100>;
97        #phy-cells = <1>;
98        clocks = <&clock CLK_USBH20>, <&clock CLK_SCLK_USBPHY300>;
99        clock-names = "phy", "ref";
100        samsung,sysreg-phandle = <&sysreg_system_controller>;
101        samsung,pmureg-phandle = <&pmu_system_controller>;
102    };
103