Commit-ID: 815e7a31c3f7929f371da9c7e9ee91cfd52ef453
Gitweb: http://git.kernel.org/tip/815e7a31c3f7929f371da9c7e9ee91cfd52ef453
Author: Eric Anholt <eric@xxxxxxxxxx>
AuthorDate: Thu, 6 Aug 2015 16:00:32 -0700
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 20 Aug 2015 22:38:42 +0200
irqchip: Add documentation for the bcm2836 interrupt controller
This is a new per-cpu root interrupt controller on the Raspberry Pi 2,
which will chain to the bcm2835 interrupt controller for peripheral
interrupts.
Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
Acked-by: Stephen Warren <swarren@xxxxxxxxxxxxx>
Cc: linux-rpi-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Lee Jones <lee@xxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1438902033-31477-4-git-send-email-eric@xxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
.../interrupt-controller/brcm,bcm2836-l1-intc.txt | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2836-l1-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2836-l1-intc.txt
new file mode 100644
index 0000000..f320dcd
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2836-l1-intc.txt
@@ -0,0 +1,37 @@
+BCM2836 per-CPU interrupt controller
+
+The BCM2836 has a per-cpu interrupt controller for the timer, PMU
+events, and SMP IPIs. One of the CPUs may receive interrupts for the
+peripheral (GPU) events, which chain to the BCM2835-style interrupt
+controller.
+
+Required properties:
+
+- compatible: Should be "brcm,bcm2836-l1-intc"
+- reg: Specifies base physical address and size of the
+ registers
+- interrupt-controller: Identifies the node as an interrupt controller
+- #interrupt-cells: Specifies the number of cells needed to encode an
+ interrupt source. The value shall be 1
+
+Please refer to interrupts.txt in this directory for details of the common
+Interrupt Controllers bindings used by client devices.
+
+The interrupt sources are as follows:
+
+0: CNTPSIRQ
+1: CNTPNSIRQ
+2: CNTHPIRQ
+3: CNTVIRQ
+8: GPU_FAST
+9: PMU_FAST
+
+Example:
+
+local_intc: local_intc {
+ compatible = "brcm,bcm2836-l1-intc";
+ reg = <0x40000000 0x100>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ interrupt-parent = <&local_intc>;
+};
--
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