xref: /linux/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml (revision 55ec81f7517fad09135f65552cea0a3ee84fff30) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/phy/samsung,usb3-drd-phy.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Samsung Exynos SoC USB 3.0 DRD PHY 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  For samsung,exynos5250-usbdrd-phy and samsung,exynos5420-usbdrd-phy
16  compatible PHYs, the second cell in the PHY specifier identifies the
17  PHY id, which is interpreted as follows::
18    0 - UTMI+ type phy,
19    1 - PIPE3 type phy.
20
21  For SoCs like Exynos5420 having multiple USB 3.0 DRD PHY controllers,
22  'usbdrd_phy' nodes should have numbered alias in the aliases node, in the
23  form of usbdrdphyN, N = 0, 1... (depending on number of controllers).
24
25properties:
26  compatible:
27    enum:
28      - samsung,exynos5250-usbdrd-phy
29      - samsung,exynos5420-usbdrd-phy
30      - samsung,exynos5433-usbdrd-phy
31      - samsung,exynos7-usbdrd-phy
32      - samsung,exynos850-usbdrd-phy
33
34  clocks:
35    minItems: 2
36    maxItems: 5
37
38  clock-names:
39    minItems: 2
40    maxItems: 5
41    description: |
42      At least two clocks::
43        - Main PHY clock (same as USB DRD controller i.e. DWC3 IP clock), used
44          for register access.
45        - PHY reference clock (usually crystal clock), used for PHY operations,
46          associated by phy name. It is used to determine bit values for clock
47          settings register.  For Exynos5420 this is given as 'sclk_usbphy30'
48          in the CMU.
49
50  "#phy-cells":
51    const: 1
52
53  port:
54    $ref: /schemas/graph.yaml#/properties/port
55    description:
56      Any connector to the data bus of this controller should be modelled using
57      the OF graph bindings specified.
58
59  reg:
60    maxItems: 1
61
62  samsung,pmu-syscon:
63    $ref: /schemas/types.yaml#/definitions/phandle
64    description:
65      Phandle to PMU system controller interface.
66
67  vbus-supply:
68    description:
69      VBUS power source.
70
71  vbus-boost-supply:
72    description:
73      VBUS Boost 5V power source.
74
75required:
76  - compatible
77  - clocks
78  - clock-names
79  - "#phy-cells"
80  - reg
81  - samsung,pmu-syscon
82
83allOf:
84  - if:
85      properties:
86        compatible:
87          contains:
88            enum:
89              - samsung,exynos5433-usbdrd-phy
90              - samsung,exynos7-usbdrd-phy
91    then:
92      properties:
93        clocks:
94          minItems: 5
95          maxItems: 5
96        clock-names:
97          items:
98            - const: phy
99            - const: ref
100            - const: phy_utmi
101            - const: phy_pipe
102            - const: itp
103    else:
104      properties:
105        clocks:
106          minItems: 2
107          maxItems: 2
108        clock-names:
109          items:
110            - const: phy
111            - const: ref
112
113additionalProperties: false
114
115examples:
116  - |
117    #include <dt-bindings/clock/exynos5420.h>
118
119    phy@12100000 {
120        compatible = "samsung,exynos5420-usbdrd-phy";
121        reg = <0x12100000 0x100>;
122        #phy-cells = <1>;
123        clocks = <&clock CLK_USBD300>, <&clock CLK_SCLK_USBPHY300>;
124        clock-names = "phy", "ref";
125        samsung,pmu-syscon = <&pmu_system_controller>;
126        vbus-supply = <&usb300_vbus_reg>;
127    };
128