50 lines
1.4 KiB
YAML
50 lines
1.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/reset/st,stih407-powerdown.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: STMicroelectronics STi family Sysconfig Peripheral Powerdown Reset Controller
|
|
|
|
maintainers:
|
|
- Srinivas Kandagatla <srinivas.kandagatla@st.com>
|
|
|
|
description: |
|
|
This binding describes a reset controller device that is used to enable and
|
|
disable on-chip peripheral controllers such as USB and SATA, using
|
|
"powerdown" control bits found in the STi family SoC system configuration
|
|
registers. These have been grouped together into a single reset controller
|
|
device for convenience.
|
|
|
|
The actual action taken when powerdown is asserted is hardware dependent.
|
|
However, when asserted it may not be possible to access the hardware's
|
|
registers and after an assert/deassert sequence the hardware's previous state
|
|
may no longer be valid.
|
|
|
|
properties:
|
|
compatible:
|
|
const: st,stih407-powerdown
|
|
|
|
'#reset-cells':
|
|
const: 1
|
|
|
|
required:
|
|
- compatible
|
|
- '#reset-cells'
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/reset/stih407-resets.h>
|
|
|
|
powerdown: powerdown-controller {
|
|
compatible = "st,stih407-powerdown";
|
|
#reset-cells = <1>;
|
|
};
|
|
|
|
// Specifying powerdown control of devices:
|
|
st_dwc3: dwc3 {
|
|
resets = <&powerdown STIH407_USB3_POWERDOWN>;
|
|
};
|