irqchip/ti-sci-inta: Add support for Interrupt Aggregator driver

Texas Instruments' K3 generation SoCs has an IP Interrupt Aggregator
which is an interrupt controller that does the following:
- Converts events to interrupts that can be understood by
  an interrupt router.
- Allows for multiplexing of events to interrupts.

Configuration of the interrupt aggregator registers can only be done by
a system co-processor and the driver needs to send a message to this
co processor over TISCI protocol. Add the required infrastructure to
allow the allocation and routing of these events.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 88bce736d1de..2c8d5daad57c 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -429,6 +429,16 @@ config TI_SCI_INTR_IRQCHIP
 	  If you wish to use interrupt router irq resources managed by the
 	  TI System Controller, say Y here. Otherwise, say N.
 
+config TI_SCI_INTA_IRQCHIP
+	bool
+	depends on TI_SCI_PROTOCOL
+	select IRQ_DOMAIN_HIERARCHY
+	help
+	  This enables the irqchip driver support for K3 Interrupt aggregator
+	  over TI System Control Interface available on some new TI's SoCs.
+	  If you wish to use interrupt aggregator irq resources managed by the
+	  TI System Controller, say Y here. Otherwise, say N.
+
 endmenu
 
 config SIFIVE_PLIC