From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/reset/st,sti-softreset.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/st,sti-softreset.txt (limited to 'Documentation/devicetree/bindings/reset/st,sti-softreset.txt') diff --git a/Documentation/devicetree/bindings/reset/st,sti-softreset.txt b/Documentation/devicetree/bindings/reset/st,sti-softreset.txt new file mode 100644 index 000000000..3661e6153 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/st,sti-softreset.txt @@ -0,0 +1,44 @@ +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,stih407-softreset"; +- #reset-cells: 1, see below + +example: + + softreset: softreset-controller { + #reset-cells = <1>; + compatible = "st,stih407-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/stih407-resets.h -- cgit v1.2.3