STMicroelectronics STi family Sysconfig Peripheral SoftReset 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 "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. Please refer to reset.txt in this directory for common reset controller binding usage. Required properties: - compatible: Should be "st,<chip>-softreset" example: "st,stih415-softreset" or "st,stih416-softreset"; - #reset-cells: 1, see below example: softreset: softreset-controller { #reset-cells = <1>; compatible = "st,stih415-softreset"; }; Specifying softreset control of devices ======================================= Device nodes should specify the reset channel required in their "resets" property, containing a phandle to the softreset device node and an index specifying which channel to use, as described in reset.txt example: ethernet0{ resets = <&softreset STIH415_ETH0_SOFTRESET>; }; Macro definitions for the supported reset channels can be found in: include/dt-bindings/reset/stih415-resets.h include/dt-bindings/reset/stih416-resets.h