firmware: Add basic support for TI System Control Interface (TI SCI) protocol
Texas Instrument's System Control Interface (TI SCI) message protocol is
used in Texas Instrument's System on Chip (SoC) such as those in the K3
family AM654 SoC to communicate between various compute processors with
a central system controller entity.
The TI SCI message protocol provides support for management of various
hardware entities within the SoC. Add support driver to allow
communication with system controller entity within the SoC using the
mailbox client.
This is mostly derived from the TI SCI driver in Linux located at
drivers/firmware/ti_sci.c.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 4c32426..cb73b70 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -4,3 +4,16 @@
config ARM_PSCI_FW
bool
select FIRMWARE
+
+config TI_SCI_PROTOCOL
+ tristate "TI System Control Interface (TISCI) Message Protocol"
+ depends on K3_SEC_PROXY
+ select FIRMWARE
+ help
+ TI System Control Interface (TISCI) Message Protocol is used to manage
+ compute systems such as ARM, DSP etc with the system controller in
+ complex System on Chip (SoC) such as those found on certain K3
+ generation SoC from TI.
+
+ This protocol library is used by client drivers to use the features
+ provided by the system controller.