xref: /linux/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml (revision 621cde16e49b3ecf7d59a8106a20aaebfb4a59a9) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/ufs/samsung,exynos-ufs.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Samsung SoC series UFS host controller
8
9maintainers:
10  - Alim Akhtar <alim.akhtar@samsung.com>
11
12description: |
13  Each Samsung UFS host controller instance should have its own node.
14
15properties:
16  compatible:
17    enum:
18      - google,gs101-ufs
19      - samsung,exynos7-ufs
20      - samsung,exynosautov9-ufs
21      - samsung,exynosautov9-ufs-vh
22      - tesla,fsd-ufs
23
24  reg:
25    items:
26      - description: HCI register
27      - description: vendor specific register
28      - description: unipro register
29      - description: UFS protector register
30
31  reg-names:
32    items:
33      - const: hci
34      - const: vs_hci
35      - const: unipro
36      - const: ufsp
37
38  clocks:
39    minItems: 2
40    items:
41      - description: ufs link core clock
42      - description: unipro main clock
43      - description: fmp clock
44      - description: ufs aclk clock
45      - description: ufs pclk clock
46      - description: sysreg clock
47
48  clock-names:
49    minItems: 2
50    items:
51      - const: core_clk
52      - const: sclk_unipro_main
53      - const: fmp
54      - const: aclk
55      - const: pclk
56      - const: sysreg
57
58  phys:
59    maxItems: 1
60
61  phy-names:
62    const: ufs-phy
63
64  samsung,sysreg:
65    $ref: /schemas/types.yaml#/definitions/phandle-array
66    items:
67      - items:
68          - description: phandle to FSYSx sysreg node
69          - description: offset of the control register for UFS io coherency setting
70    description:
71      Phandle and offset to the FSYSx sysreg for UFS io coherency setting.
72
73  dma-coherent: true
74
75required:
76  - compatible
77  - reg
78  - phys
79  - phy-names
80  - clocks
81  - clock-names
82
83allOf:
84  - $ref: ufs-common.yaml
85  - if:
86      properties:
87        compatible:
88          contains:
89            const: google,gs101-ufs
90
91    then:
92      properties:
93        clocks:
94          minItems: 6
95
96        clock-names:
97          minItems: 6
98
99    else:
100      properties:
101        clocks:
102          maxItems: 2
103
104        clock-names:
105          maxItems: 2
106
107unevaluatedProperties: false
108
109examples:
110  - |
111    #include <dt-bindings/interrupt-controller/arm-gic.h>
112    #include <dt-bindings/clock/exynos7-clk.h>
113
114    ufs: ufs@15570000 {
115       compatible = "samsung,exynos7-ufs";
116       reg = <0x15570000 0x100>,
117             <0x15570100 0x100>,
118             <0x15571000 0x200>,
119             <0x15572000 0x300>;
120       reg-names = "hci", "vs_hci", "unipro", "ufsp";
121       interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>;
122       clocks = <&clock_fsys1 ACLK_UFS20_LINK>,
123                <&clock_fsys1 SCLK_UFSUNIPRO20_USER>;
124       clock-names = "core_clk", "sclk_unipro_main";
125       pinctrl-names = "default";
126       pinctrl-0 = <&ufs_rst_n &ufs_refclk_out>;
127       phys = <&ufs_phy>;
128       phy-names = "ufs-phy";
129    };
130...
131