tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/media/i2c/dongwoon,dw9719.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Dongwoon Anatech DW9719 Voice Coil Motor (VCM) Controller
8
9maintainers:
10 - André Apitzsch <git@apitzsch.eu>
11
12description:
13 The Dongwoon DW9718S/9719/9761 is a single 10-bit digital-to-analog converter
14 with 100 mA output current sink capability, designed for linear control of
15 voice coil motors (VCM) in camera lenses. This chip provides a Smart Actuator
16 Control (SAC) mode intended for driving voice coil lenses in camera modules.
17
18properties:
19 compatible:
20 enum:
21 - dongwoon,dw9718s
22 - dongwoon,dw9719
23 - dongwoon,dw9761
24 - dongwoon,dw9800k
25
26 reg:
27 maxItems: 1
28
29 vdd-supply:
30 description: VDD power supply
31
32 dongwoon,sac-mode:
33 description: |
34 Slew Rate Control mode to use: direct, LSC (Linear Slope Control) or
35 SAC1-SAC6 (Smart Actuator Control).
36 $ref: /schemas/types.yaml#/definitions/uint32
37 enum:
38 - 0 # Direct mode
39 - 1 # LSC mode
40 - 2 # SAC1 mode (operation time# 0.32 x Tvib)
41 - 3 # SAC2 mode (operation time# 0.48 x Tvib)
42 - 4 # SAC3 mode (operation time# 0.72 x Tvib)
43 - 5 # SAC4 mode (operation time# 1.20 x Tvib)
44 - 6 # SAC5 mode (operation time# 1.64 x Tvib)
45 - 7 # SAC6 mode (operation time# 1.88 x Tvib)
46 default: 4
47
48 dongwoon,vcm-prescale:
49 description:
50 Indication of VCM switching frequency dividing rate select.
51 $ref: /schemas/types.yaml#/definitions/uint32
52
53required:
54 - compatible
55 - reg
56 - vdd-supply
57
58allOf:
59 - if:
60 properties:
61 compatible:
62 contains:
63 const: dongwoon,dw9718s
64 then:
65 properties:
66 dongwoon,vcm-prescale:
67 description:
68 The final frequency is 10 MHz divided by (value + 2).
69 maximum: 15
70 default: 0
71
72additionalProperties: false
73
74examples:
75 - |
76 i2c {
77 #address-cells = <1>;
78 #size-cells = <0>;
79
80 actuator@c {
81 compatible = "dongwoon,dw9718s";
82 reg = <0x0c>;
83
84 vdd-supply = <&pm8937_l17>;
85
86 dongwoon,sac-mode = <4>;
87 dongwoon,vcm-prescale = <0>;
88 };
89 };