mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
694b052401
Devices from the TI K3 family of SoCs like the AM654x contain a Device Management and Security Controller (SYSFW) that manages the low-level device control (like clocks, resets etc) for the various hardware modules present on the SoC. These device control operations are provided to the host processor OS through a communication protocol called the TI System Control Interface (TI SCI) protocol. This patch adds a system reset driver that communicates to the system controller over the TI SCI protocol for allowing to perform a system- wide SoC reset. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
29 lines
958 B
Text
29 lines
958 B
Text
Texas Instruments TI SCI System Reset Controller
|
|
================================================
|
|
|
|
Some TI SoCs contain a system controller (like the SYSFW, etc...) that is
|
|
responsible for controlling the state of the IPs that are present.
|
|
Communication between the host processor running an OS and the system
|
|
controller happens through a protocol known as TI SCI [1].
|
|
|
|
[1] http://processors.wiki.ti.com/index.php/TISCI
|
|
|
|
System Reset Controller Node
|
|
============================
|
|
The sysreset controller node represents the reset for the overall SoC
|
|
which is managed by the SYSFW. Because this relies on the TI SCI protocol
|
|
to communicate with the SYSFW it must be a child of the sysfw node.
|
|
|
|
Required Properties:
|
|
--------------------
|
|
- compatible: Must be "ti,sci-sysreset"
|
|
|
|
Example (AM65x):
|
|
----------------
|
|
sysfw: sysfw {
|
|
compatible = "ti,am654-system-controller";
|
|
...
|
|
k3_sysreset: sysreset-controller {
|
|
compatible = "ti,sci-sysreset";
|
|
};
|
|
};
|