FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/reset/st,sti-powerdown.txt

     STMicroelectronics STi family Sysconfig Peripheral Powerdown Reset Controller
     =============================================================================
     
     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.
    
    Please refer to reset.txt in this directory for common reset
    controller binding usage.
    
    Required properties:
    - compatible: Should be "st,stih407-powerdown"
    - #reset-cells: 1, see below
    
    example:
    
            powerdown: powerdown-controller {
                    compatible = "st,stih407-powerdown";
                    #reset-cells = <1>;
            };
    
    
    Specifying powerdown control of devices
    =======================================
    
    Device nodes should specify the reset channel required in their "resets"
    property, containing a phandle to the powerdown device node and an
    index specifying which channel to use, as described in reset.txt
    
    example:
    
            st_dwc3: dwc3@8f94000 {
                    resets          = <&powerdown STIH407_USB3_POWERDOWN>,
            };
    
    Macro definitions for the supported reset channels can be found in:
    
    include/dt-bindings/reset/stih407-resets.h

Cache object: 1775feec5e8567356448b6a901504ecd