The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/reset/st,stih407-picophyreset.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/reset/st,stih407-picophyreset.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: STMicroelectronics STi family Sysconfig Picophy SoftReset Controller
    8 
    9 maintainers:
   10   - Peter Griffin <peter.griffin@linaro.org>
   11 
   12 description: |
   13   This binding describes a reset controller device that is used to enable and
   14   disable on-chip PicoPHY USB2 phy(s) using "softreset" control bits found in
   15   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's
   19   registers and after an assert/deassert sequence the hardware's previous state
   20   may no longer be valid.
   21 
   22 properties:
   23   compatible:
   24     const: st,stih407-picophyreset
   25 
   26   '#reset-cells':
   27     const: 1
   28 
   29 required:
   30   - compatible
   31   - '#reset-cells'
   32 
   33 additionalProperties: false
   34 
   35 examples:
   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 devices
   45     usb2_picophy0: usbpicophy {
   46         resets = <&picophyreset STIH407_PICOPHY0_RESET>;
   47     };

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