1BCM2835 PM (Power domains, watchdog) 2 3The PM block controls power domains and some reset lines, and includes 4a watchdog timer. This binding supersedes the brcm,bcm2835-pm-wdt 5binding which covered some of PM's register range and functionality. 6 7Required properties: 8 9- compatible: Should be "brcm,bcm2835-pm" 10- reg: Specifies base physical address and size of the two 11 register ranges ("PM" and "ASYNC_BRIDGE" in that 12 order) 13- clocks: a) v3d: The V3D clock from CPRMAN 14 b) peri_image: The PERI_IMAGE clock from CPRMAN 15 c) h264: The H264 clock from CPRMAN 16 d) isp: The ISP clock from CPRMAN 17- #reset-cells: Should be 1. This property follows the reset controller 18 bindings[1]. 19- #power-domain-cells: Should be 1. This property follows the power domain 20 bindings[2]. 21 22Optional properties: 23 24- timeout-sec: Contains the watchdog timeout in seconds 25- system-power-controller: Whether the watchdog is controlling the 26 system power. This node follows the power controller bindings[3]. 27 28[1] Documentation/devicetree/bindings/reset/reset.txt 29[2] Documentation/devicetree/bindings/power/power-domain.yaml 30[3] Documentation/devicetree/bindings/power/power-controller.txt 31 32Example: 33 34pm { 35 compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt"; 36 #power-domain-cells = <1>; 37 #reset-cells = <1>; 38 reg = <0x7e100000 0x114>, 39 <0x7e00a000 0x24>; 40 clocks = <&clocks BCM2835_CLOCK_V3D>, 41 <&clocks BCM2835_CLOCK_PERI_IMAGE>, 42 <&clocks BCM2835_CLOCK_H264>, 43 <&clocks BCM2835_CLOCK_ISP>; 44 clock-names = "v3d", "peri_image", "h264", "isp"; 45 system-power-controller; 46}; 47