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Diffstat (limited to 'Documentation/devicetree/bindings/reset/st,stih407-picophyreset.yaml')
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1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reset/st,stih407-picophyreset.yaml b/Documentation/devicetree/bindings/reset/st,stih407-picophyreset.yaml new file mode 100644 index 000000000..329ae4ae1 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/st,stih407-picophyreset.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reset/st,stih407-picophyreset.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics STi family Sysconfig Picophy SoftReset Controller + +maintainers: + - Peter Griffin <peter.griffin@linaro.org> + +description: | + This binding describes a reset controller device that is used to enable and + disable on-chip PicoPHY USB2 phy(s) using "softreset" control bits found in + the STi family SoC system configuration registers. + + The actual action taken when softreset 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-picophyreset + + '#reset-cells': + const: 1 + +required: + - compatible + - '#reset-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/reset/stih407-resets.h> + + picophyreset: picophyreset-controller { + compatible = "st,stih407-picophyreset"; + #reset-cells = <1>; + }; + + // Specifying picophyreset control of devices + usb2_picophy0: usbpicophy { + resets = <&picophyreset STIH407_PICOPHY0_RESET>; + }; |