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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/reset/st,stih407-powerdown.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: STMicroelectronics STi family Sysconfig Peripheral Powerdown Reset Controller8 9maintainers:10 - Srinivas Kandagatla <srinivas.kandagatla@st.com>11 12description: |13 This binding describes a reset controller device that is used to enable and14 disable on-chip peripheral controllers such as USB and SATA, using15 "powerdown" control bits found in the STi family SoC system configuration16 registers. These have been grouped together into a single reset controller17 device for convenience.18 19 The actual action taken when powerdown is asserted is hardware dependent.20 However, when asserted it may not be possible to access the hardware's21 registers and after an assert/deassert sequence the hardware's previous state22 may no longer be valid.23 24properties:25 compatible:26 const: st,stih407-powerdown27 28 '#reset-cells':29 const: 130 31required:32 - compatible33 - '#reset-cells'34 35additionalProperties: false36 37examples:38 - |39 #include <dt-bindings/reset/stih407-resets.h>40 41 powerdown: powerdown-controller {42 compatible = "st,stih407-powerdown";43 #reset-cells = <1>;44 };45 46 // Specifying powerdown control of devices:47 st_dwc3: dwc3 {48 resets = <&powerdown STIH407_USB3_POWERDOWN>;49 };50