[tip: irq/core] irqchip/irq-pruss-intc: Add support for ICSSG INTC on K3 SoCs

[tip-bot2 for Suman Anna]

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     7e92dee60cba51f8a5c7637bac815e70c85935f7
Gitweb:        https://git.kernel.org/tip/7e92dee60cba51f8a5c7637bac815e70c85935f7
Author:        Suman Anna <s-anna@xxxxxx>
AuthorDate:    Wed, 16 Sep 2020 18:36:38 +02:00
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Thu, 17 Sep 2020 12:20:32 +01:00

irqchip/irq-pruss-intc: Add support for ICSSG INTC on K3 SoCs

The K3 AM65x and J721E SoCs have the next generation of the PRU-ICSS IP,
commonly called ICSSG. The PRUSS INTC present within the ICSSG supports
more System Events (160 vs 64), more Interrupt Channels and Host Interrupts
(20 vs 10) compared to the previous generation PRUSS INTC instances. The
first 2 and the last 10 of these host interrupt lines are used by the
PRU and other auxiliary cores and sub-modules within the ICSSG, with 8
host interrupts connected to MPU. The host interrupts 5, 6, 7 are also
connected to the other ICSSG instances within the SoC and can be
partitioned as per system integration through the board dts files.

Enhance the PRUSS INTC driver to add support for this ICSSG INTC
instance.

Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@xxxxxxxxxx>
Signed-off-by: Suman Anna <s-anna@xxxxxx>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
 drivers/irqchip/Kconfig          |  2 +-
 drivers/irqchip/irq-pruss-intc.c |  9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 733e59f..25c8944 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -495,7 +495,7 @@ config TI_SCI_INTA_IRQCHIP
 
 config TI_PRUSS_INTC
 	tristate "TI PRU-ICSS Interrupt Controller"
-	depends on ARCH_DAVINCI || SOC_AM33XX || SOC_AM43XX || SOC_DRA7XX || ARCH_KEYSTONE
+	depends on ARCH_DAVINCI || SOC_AM33XX || SOC_AM43XX || SOC_DRA7XX || ARCH_KEYSTONE || ARCH_K3
 	select IRQ_DOMAIN
 	help
 	  This enables support for the PRU-ICSS Local Interrupt Controller
diff --git a/drivers/irqchip/irq-pruss-intc.c b/drivers/irqchip/irq-pruss-intc.c
index bfe529a..92fb578 100644
--- a/drivers/irqchip/irq-pruss-intc.c
+++ b/drivers/irqchip/irq-pruss-intc.c
@@ -628,11 +628,20 @@ static const struct pruss_intc_match_data pruss_intc_data = {
 	.num_host_events = 10,
 };
 
+static const struct pruss_intc_match_data icssg_intc_data = {
+	.num_system_events = 160,
+	.num_host_events = 20,
+};
+
 static const struct of_device_id pruss_intc_of_match[] = {
 	{
 		.compatible = "ti,pruss-intc",
 		.data = &pruss_intc_data,
 	},
+	{
+		.compatible = "ti,icssg-intc",
+		.data = &icssg_intc_data,
+	},
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, pruss_intc_of_match);