xref: /openbmc/linux/Documentation/devicetree/bindings/power/reset/qnap-poweroff.txt (revision ba61bb17496d1664bf7c5c2fd650d5fd78bd0a92)
1* QNAP Power Off
2
3QNAP NAS devices have a microcontroller controlling the main power
4supply. This microcontroller is connected to UART1 of the Kirkwood and
5Orion5x SoCs. Sending the character 'A', at 19200 baud, tells the
6microcontroller to turn the power off.
7
8Synology NAS devices use a similar scheme, but a different baud rate,
99600, and a different character, '1'.
10
11Required Properties:
12- compatible: Should be "qnap,power-off" or "synology,power-off"
13
14- reg: Address and length of the register set for UART1
15- clocks: tclk clock
16