tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/clock/mediatek,mt8186-fhctl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek frequency hopping and spread spectrum clocking control
8
9maintainers:
10 - Edward-JW Yang <edward-jw.yang@mediatek.com>
11
12description: |
13 Frequency hopping control (FHCTL) is a piece of hardware that control
14 some PLLs to adopt "hopping" mechanism to adjust their frequency.
15 Spread spectrum clocking (SSC) is another function provided by this hardware.
16
17properties:
18 compatible:
19 const: mediatek,mt8186-fhctl
20
21 reg:
22 maxItems: 1
23
24 clocks:
25 description: Phandles of the PLL with FHCTL hardware capability.
26 minItems: 1
27 maxItems: 30
28
29 mediatek,hopping-ssc-percent:
30 description: The percentage of spread spectrum clocking for one PLL.
31 minItems: 1
32 maxItems: 30
33 items:
34 default: 0
35 minimum: 0
36 maximum: 8
37
38required:
39 - compatible
40 - reg
41 - clocks
42
43additionalProperties: false
44
45examples:
46 - |
47 #include <dt-bindings/clock/mt8186-clk.h>
48 fhctl: fhctl@1000ce00 {
49 compatible = "mediatek,mt8186-fhctl";
50 reg = <0x1000ce00 0x200>;
51 clocks = <&apmixedsys CLK_APMIXED_MSDCPLL>;
52 mediatek,hopping-ssc-percent = <3>;
53 };