pmu.txt (1728B)
1Device Tree bindings for Marvell PMU 2 3Required properties: 4 - compatible: value should be "marvell,dove-pmu". 5 May also include "simple-bus" if there are child devices, in which 6 case the ranges node is required. 7 - reg: two base addresses and sizes of the PM controller and PMU. 8 - interrupts: single interrupt number for the PMU interrupt 9 - interrupt-controller: must be specified as the PMU itself is an 10 interrupt controller. 11 - #interrupt-cells: must be 1. 12 - #reset-cells: must be 1. 13 - domains: sub-node containing domain descriptions 14 15Optional properties: 16 - ranges: defines the address mapping for child devices, as per the 17 standard property of this name. Required when compatible includes 18 "simple-bus". 19 20Power domain descriptions are listed as child nodes of the "domains" 21sub-node. Each domain has the following properties: 22 23Required properties: 24 - #power-domain-cells: must be 0. 25 26Optional properties: 27 - marvell,pmu_pwr_mask: specifies the mask value for PMU power register 28 - marvell,pmu_iso_mask: specifies the mask value for PMU isolation register 29 - resets: points to the reset manager (PMU node) and reset index. 30 31Example: 32 33 pmu: power-management@d0000 { 34 compatible = "marvell,dove-pmu"; 35 reg = <0xd0000 0x8000>, <0xd8000 0x8000>; 36 interrupts = <33>; 37 interrupt-controller; 38 #interrupt-cells = <1>; 39 #reset-cells = <1>; 40 41 domains { 42 vpu_domain: vpu-domain { 43 #power-domain-cells = <0>; 44 marvell,pmu_pwr_mask = <0x00000008>; 45 marvell,pmu_iso_mask = <0x00000001>; 46 resets = <&pmu 16>; 47 }; 48 49 gpu_domain: gpu-domain { 50 #power-domain-cells = <0>; 51 marvell,pmu_pwr_mask = <0x00000004>; 52 marvell,pmu_iso_mask = <0x00000002>; 53 resets = <&pmu 18>; 54 }; 55 }; 56 };