1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/clock/mediatek,mt8186-fhctl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MediaTek frequency hopping and spread spectrum clocking control
10 - Edward-JW Yang <edward-jw.yang@mediatek.com>
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.
20 - mediatek,mt6795-fhctl
21 - mediatek,mt8173-fhctl
22 - mediatek,mt8186-fhctl
23 - mediatek,mt8192-fhctl
24 - mediatek,mt8195-fhctl
30 description: Phandles of the PLL with FHCTL hardware capability.
34 mediatek,hopping-ssc-percent:
35 description: The percentage of spread spectrum clocking for one PLL.
48 additionalProperties: false
52 #include <dt-bindings/clock/mt8186-clk.h>
53 fhctl: fhctl@1000ce00 {
54 compatible = "mediatek,mt8186-fhctl";
55 reg = <0x1000ce00 0x200>;
56 clocks = <&apmixedsys CLK_APMIXED_MSDCPLL>;
57 mediatek,hopping-ssc-percent = <3>;