68 lines
1.9 KiB
YAML
68 lines
1.9 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/power/reset/syscon-reboot.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Generic SYSCON mapped register reset driver
|
|
|
|
maintainers:
|
|
- Sebastian Reichel <sre@kernel.org>
|
|
|
|
description: |+
|
|
This is a generic reset driver using syscon to map the reset register.
|
|
The reset is generally performed with a write to the reset register
|
|
defined by the SYSCON register map base plus the offset with the value and
|
|
mask defined in the reboot node. Default will be little endian mode, 32 bit
|
|
access only. The SYSCON registers map is normally retrieved from the
|
|
parental dt-node. So the SYSCON reboot node should be represented as a
|
|
sub-node of a "syscon", "simple-mfd" node. Though the regmap property
|
|
pointing to the system controller node is also supported.
|
|
|
|
properties:
|
|
compatible:
|
|
const: syscon-reboot
|
|
|
|
mask:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: Update only the register bits defined by the mask (32 bit).
|
|
|
|
offset:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: Offset in the register map for the reboot register (in bytes).
|
|
|
|
regmap:
|
|
$ref: /schemas/types.yaml#/definitions/phandle
|
|
deprecated: true
|
|
description: |
|
|
Phandle to the register map node. This property is deprecated in favor of
|
|
the syscon-reboot node been a child of a system controller node.
|
|
|
|
value:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: The reset value written to the reboot register (32 bit access).
|
|
|
|
required:
|
|
- compatible
|
|
- offset
|
|
|
|
additionalProperties: false
|
|
|
|
allOf:
|
|
- if:
|
|
not:
|
|
required:
|
|
- mask
|
|
then:
|
|
required:
|
|
- value
|
|
|
|
examples:
|
|
- |
|
|
reboot {
|
|
compatible = "syscon-reboot";
|
|
regmap = <®mapnode>;
|
|
offset = <0x0>;
|
|
mask = <0x1>;
|
|
};
|