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