mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-11-01 09:13:37 +00:00
cbac8a0838
STiH415/6 SoC support is being removed from the kernel. This patch updates the sti dt powerdown bindings and removes references to these obsolete platforms. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Cc: <p.zabel@pengutronix.de> Cc: <robh+dt@kernel.org> Acked-by: Rob Herring <robh@kernel.org>
45 lines
1.5 KiB
Text
45 lines
1.5 KiB
Text
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
|