xref: /linux/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml (revision be239684b18e1cdcafcf8c7face4a2f562c745ad) 
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
15allOf:
16  - $ref: ufs-common.yaml
17
18properties:
19  compatible:
20    enum:
21      - samsung,exynos7-ufs
22      - samsung,exynosautov9-ufs
23      - samsung,exynosautov9-ufs-vh
24      - tesla,fsd-ufs
25
26  reg:
27    items:
28      - description: HCI register
29      - description: vendor specific register
30      - description: unipro register
31      - description: UFS protector register
32
33  reg-names:
34    items:
35      - const: hci
36      - const: vs_hci
37      - const: unipro
38      - const: ufsp
39
40  clocks:
41    items:
42      - description: ufs link core clock
43      - description: unipro main clock
44
45  clock-names:
46    items:
47      - const: core_clk
48      - const: sclk_unipro_main
49
50  phys:
51    maxItems: 1
52
53  phy-names:
54    const: ufs-phy
55
56  samsung,sysreg:
57    $ref: /schemas/types.yaml#/definitions/phandle-array
58    items:
59      - items:
60          - description: phandle to FSYSx sysreg node
61          - description: offset of the control register for UFS io coherency setting
62    description:
63      Phandle and offset to the FSYSx sysreg for UFS io coherency setting.
64
65  dma-coherent: true
66
67required:
68  - compatible
69  - reg
70  - phys
71  - phy-names
72  - clocks
73  - clock-names
74
75unevaluatedProperties: false
76
77examples:
78  - |
79    #include <dt-bindings/interrupt-controller/arm-gic.h>
80    #include <dt-bindings/clock/exynos7-clk.h>
81
82    ufs: ufs@15570000 {
83       compatible = "samsung,exynos7-ufs";
84       reg = <0x15570000 0x100>,
85             <0x15570100 0x100>,
86             <0x15571000 0x200>,
87             <0x15572000 0x300>;
88       reg-names = "hci", "vs_hci", "unipro", "ufsp";
89       interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>;
90       clocks = <&clock_fsys1 ACLK_UFS20_LINK>,
91                <&clock_fsys1 SCLK_UFSUNIPRO20_USER>;
92       clock-names = "core_clk", "sclk_unipro_main";
93       pinctrl-names = "default";
94       pinctrl-0 = <&ufs_rst_n &ufs_refclk_out>;
95       phys = <&ufs_phy>;
96       phy-names = "ufs-phy";
97    };
98...
99