lkml.org 
[lkml]   [2016]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 1/3] binding: irqchip: mtk-cirq: Add binding document
Date
This commit adds the device tree binding document for
the mediatek cirq.

Signed-off-by: Youlin Pei <youlin.pei@mediatek.com>
---
.../interrupt-controller/mediatek,cirq.txt | 30 ++++++++++++++++++++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/mediatek,cirq.txt

diff --git a/Documentation/devicetree/bindings/interrupt-controller/mediatek,cirq.txt b/Documentation/devicetree/bindings/interrupt-controller/mediatek,cirq.txt
new file mode 100644
index 0000000..84e8123
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,cirq.txt
@@ -0,0 +1,30 @@
+* Mediatek 27xx cirq
+
+In Mediatek SOCs, the CIRQ is a low power interrupt controller designed to
+works outside MCUSYS which comprises with Cortex-Ax cores,CCI and GIC.
+The external interrupts (outside MCUSYS) will feed through CIRQ and connect
+to GIC in MCUSYS. When CIRQ is enabled, it will record the edge-sensitive
+interrupts and generated a pulse signal to parent interrupt controller when
+flush command is executed. With CIRQ, MCUSYS can be completely turned off
+to improve the system power consumption without losing interrupts.
+
+Required properties:
+- compatible: should be: "mediatek,mtk-cirq".
+- interrupt-controller : Identifies the node as an interrupt controller.
+- #interrupt-cells : Use the same format as specified by GIC in arm,gic.txt.
+- interrupt-parent: phandle of irq parent for cirq. The parent must
+ use the same interrupt-cells format as GIC.
+- reg: Physical base address of the cirq registers and length of memory
+ mapped region.
+- mediatek,ext-irq-start: Identifies external irq start number in different
+ SOCs.
+
+Example:
+ cirq: interrupt-controller@10204000 {
+ compatible = "mediatek,mtk-cirq";
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&sysirq>;
+ reg = <0 0x10204000 0 0x4000>;
+ mediatek,ext-irq-start = <32>;
+ };
--
1.7.9.5
\
 
 \ /
  Last update: 2016-11-01 12:53    [W:0.139 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site