Commit 7e92dee6 authored Sep 16, 2020 by Suman Anna Committed by Marc Zyngier Sep 17, 2020

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@linaro.org>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>

parent b1026e8a

drivers/irqchip/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -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

drivers/irqchip/irq-pruss-intc.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -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);

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