The system reboot on the cameo-rtl9302c (and presumably many other boards based on the realtek reference design) is connected via the switch reset register (RST_GLB_CTRL_0). Because the switch register block encompasses a number of functions that would normally be separate perhipherals I've represented it as a syscon node. Right now the only peripheral I've added is the reset (using syscon-reboot). The binding and syscon node will be expanded in the future to add some additional functions (e.g. I2C, GPIO, MDIO). Chris Packham (3): dt-bindings: mfd: Add Realtek switch mips: dts: realtek: Add syscon-reboot node dt-bindings: mfd: Add more RTL9300 variants .../bindings/mfd/realtek,rtl9302c-switch.yaml | 53 +++++++++++++++++++ arch/mips/boot/dts/realtek/rtl930x.dtsi | 11 ++++ 2 files changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/realtek,rtl9302c-switch.yaml -- 2.46.1