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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/reset/st,stih407-picophyreset.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: STMicroelectronics STi family Sysconfig Picophy SoftReset Controller8 9maintainers:10 - Peter Griffin <peter.griffin@linaro.org>11 12description: |13 This binding describes a reset controller device that is used to enable and14 disable on-chip PicoPHY USB2 phy(s) using "softreset" control bits found in15 the STi family SoC system configuration registers.16 17 The actual action taken when softreset is asserted is hardware dependent.18 However, when asserted it may not be possible to access the hardware's19 registers and after an assert/deassert sequence the hardware's previous state20 may no longer be valid.21 22properties:23 compatible:24 const: st,stih407-picophyreset25 26 '#reset-cells':27 const: 128 29required:30 - compatible31 - '#reset-cells'32 33additionalProperties: false34 35examples:36 - |37 #include <dt-bindings/reset/stih407-resets.h>38 39 picophyreset: picophyreset-controller {40 compatible = "st,stih407-picophyreset";41 #reset-cells = <1>;42 };43 44 // Specifying picophyreset control of devices45 usb2_picophy0: usbpicophy {46 resets = <&picophyreset STIH407_PICOPHY0_RESET>;47 };48