1STMicroelectronics STi family Sysconfig Peripheral SoftReset Controller 2============================================================================= 3 4This binding describes a reset controller device that is used to enable and 5disable on-chip peripheral controllers such as USB and SATA, using 6"softreset" control bits found in the STi family SoC system configuration 7registers. 8 9The actual action taken when softreset is asserted is hardware dependent. 10However, when asserted it may not be possible to access the hardware's 11registers and after an assert/deassert sequence the hardware's previous state 12may no longer be valid. 13 14Please refer to reset.txt in this directory for common reset 15controller binding usage. 16 17Required properties: 18- compatible: Should be "st,stih407-softreset"; 19- #reset-cells: 1, see below 20 21example: 22 23 softreset: softreset-controller { 24 #reset-cells = <1>; 25 compatible = "st,stih407-softreset"; 26 }; 27 28 29Specifying softreset control of devices 30======================================= 31 32Device nodes should specify the reset channel required in their "resets" 33property, containing a phandle to the softreset device node and an 34index specifying which channel to use, as described in reset.txt 35 36example: 37 38 ethernet0{ 39 resets = <&softreset STIH415_ETH0_SOFTRESET>; 40 }; 41 42Macro definitions for the supported reset channels can be found in: 43 44include/dt-bindings/reset/stih407-resets.h 45