irqchip: add a SiFive PLIC driver
Add a driver for the SiFive implementation of the RISC-V Platform Level
Interrupt Controller (PLIC). The PLIC connects global interrupt sources
to the local interrupt controller on each hart.
This driver is based on the driver in the RISC-V tree from Palmer Dabbelt,
but has been almost entirely rewritten since, and includes many fixes
from Atish Patra.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
[Binding update by Palmer]
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 15f268f..fbd1ec8 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -87,3 +87,4 @@
obj-$(CONFIG_GOLDFISH_PIC) += irq-goldfish-pic.o
obj-$(CONFIG_NDS32) += irq-ativic32.o
obj-$(CONFIG_QCOM_PDC) += qcom-pdc.o
+obj-$(CONFIG_SIFIVE_PLIC) += irq-sifive-plic.o