1 # SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/clock/rockchip,rv1108-cru.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Rockchip RV1108 Clock and Reset Unit (CRU)
8
9 maintainers:
10 - Elaine Zhang <zhangqing@rock-chips.com>
11 - Heiko Stuebner <heiko@sntech.de>
12
13 description: |
14 The RV1108 clock controller generates and supplies clocks to various
15 controllers within the SoC and also implements a reset controller for SoC
16 peripherals.
17 Each clock is assigned an identifier and client nodes can use this identifier
18 to specify the clock which they consume. All available clocks are defined as
19 preprocessor macros in the dt-bindings/clock/rv1108-cru.h headers and can be
20 used in device tree sources. Similar macros exist for the reset sources in
21 these files.
22 There are several clocks that are generated outside the SoC. It is expected
23 that they are defined using standard clock bindings with following
24 clock-output-names:
25 - "xin24m" - crystal input - required
26 - "ext_vip" - external VIP clock - optional
27 - "ext_i2s" - external I2S clock - optional
28 - "ext_gmac" - external GMAC clock - optional
29 - "hdmiphy" - external clock input derived from HDMI PHY - optional
30 - "usbphy" - external clock input derived from USB PHY - optional
31
32 properties:
33 compatible:
34 enum:
35 - rockchip,rv1108-cru
36
37 reg:
38 maxItems: 1
39
40 "#clock-cells":
41 const: 1
42
43 "#reset-cells":
44 const: 1
45
46 clocks:
47 maxItems: 1
48
49 clock-names:
50 const: xin24m
51
52 rockchip,grf:
53 $ref: /schemas/types.yaml#/definitions/phandle
54 description:
55 Phandle to the syscon managing the "general register files" (GRF),
56 if missing pll rates are not changeable, due to the missing pll
57 lock status.
58
59 required:
60 - compatible
61 - reg
62 - "#clock-cells"
63 - "#reset-cells"
64
65 additionalProperties: false
66
67 examples:
68 - |
69 cru: clock-controller@20200000 {
70 compatible = "rockchip,rv1108-cru";
71 reg = <0x20200000 0x1000>;
72 rockchip,grf = <&grf>;
73 #clock-cells = <1>;
74 #reset-cells = <1>;
75 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.