reset: Add Raspberry Pi 4 firmware reset controller
Raspberry Pi 4's co-processor controls some of the board's HW
initialization process, but it's up to Linux to trigger it when
relevant. Introduce a reset controller capable of interfacing with
RPi4's co-processor that models these firmware initialization routines as
reset lines.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 58ba0c6..6d53561 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -153,4 +153,15 @@
depends on DM_RESET
help
Support generic syscon mapped register reset devices.
+
+config RESET_RASPBERRYPI
+ bool "Raspberry Pi 4 Firmware Reset Controller Driver"
+ depends on DM_RESET && ARCH_BCM283X
+ default USB_XHCI_PCI
+ help
+ Raspberry Pi 4's co-processor controls some of the board's HW
+ initialization process, but it's up to Linux to trigger it when
+ relevant. This driver provides a reset controller capable of
+ interfacing with RPi4's co-processor and model these firmware
+ initialization routines as reset lines.
endmenu