dt-bindings: mtk-sysirq: Add multiple bases support for Mediatek sysirq

This describes how to specify multiple base addresses for sysirq
in mediatek platforms.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt b/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt
index 9d1d72c..a89c03b 100644 (file)
--- a/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt
@@ -21,13 +21,16 @@ Required properties:
 - interrupt-parent: phandle of irq parent for sysirq. The parent must
   use the same interrupt-cells format as GIC.
 - reg: Physical base address of the intpol registers and length of memory
-  mapped region.
+  mapped region. Could be multiple bases here. Ex: mt6797 needs 2 reg, others
+  need 1.
 
 Example:
-       sysirq: interrupt-controller@10200100 {
-               compatible = "mediatek,mt6589-sysirq", "mediatek,mt6577-sysirq";
+       sysirq: intpol-controller@10200620 {
+               compatible = "mediatek,mt6797-sysirq",
+                            "mediatek,mt6577-sysirq";
                interrupt-controller;
                #interrupt-cells = <3>;
                interrupt-parent = <&gic>;
-               reg = <0 0x10200100 0 0x1c>;
+               reg = <0 0x10220620 0 0x20>,
+                     <0 0x10220690 0 0x10>;
        };