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Diffstat (limited to 'Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml')
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diff --git a/Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml b/Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml new file mode 100644 index 0000000000..d3790e6026 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml @@ -0,0 +1,49 @@ +# 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>; + }; |