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1# SPDX-License-Identifier: GPL-2.02%YAML 1.23---4$id: http://devicetree.org/schemas/power/reset/syscon-poweroff.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Generic SYSCON mapped register poweroff driver8 9maintainers:10 - Sebastian Reichel <sre@kernel.org>11 12description: |+13 This is a generic poweroff driver using syscon to map the poweroff register.14 The poweroff is generally performed with a write to the poweroff register15 defined by the register map pointed by syscon reference plus the offset16 with the value and mask defined in the poweroff node.17 Default will be little endian mode, 32 bit access only.18 The SYSCON register map is normally retrieved from the parental dt-node. So19 the SYSCON poweroff node should be represented as a sub-node of a "syscon",20 "simple-mfd" node.21 22properties:23 compatible:24 const: syscon-poweroff25 26 mask:27 $ref: /schemas/types.yaml#/definitions/uint3228 description: Update only the register bits defined by the mask (32 bit).29 30 offset:31 $ref: /schemas/types.yaml#/definitions/uint3232 description: Offset in the register map for the poweroff register (in bytes).33 34 regmap:35 $ref: /schemas/types.yaml#/definitions/phandle36 deprecated: true37 description:38 Phandle to the register map node. This property is deprecated in favor of39 the syscon-poweroff node being a child of a system controller node.40 41 value:42 $ref: /schemas/types.yaml#/definitions/uint3243 description: The poweroff value written to the poweroff register (32 bit access).44 45required:46 - compatible47 - offset48 49additionalProperties: false50 51allOf:52 - if:53 not:54 required:55 - mask56 then:57 required:58 - value59 60examples:61 - |62 poweroff {63 compatible = "syscon-poweroff";64 offset = <0x0>;65 mask = <0x7a>;66 };67