[PATCH v2 3/4] arm: mediatek: Add intpol in mt6589.dtsi

[PATCH v2 3/4] arm: mediatek: Add intpol in mt6589.dtsi

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

Add intpol settings for mt6589.
This also correct timer interrupt flag setting. The old setting
works because 6589 boot loader already set polarity for time
interrupt. Without intpol support, the setting was not changed
so gic can get the irq correctly.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/boot/dts/mt6589.dtsi | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/mt6589.dtsi b/arch/arm/boot/dts/mt6589.dtsi
index d0297a0..18df47f 100644
--- a/arch/arm/boot/dts/mt6589.dtsi
+++ b/arch/arm/boot/dts/mt6589.dtsi
@@ -76,11 +76,16 @@
 		timer: timer@10008000 {
 			compatible = "mediatek,mt6577-timer";
 			reg = <0x10008000 0x80>;
-			interrupts = <GIC_SPI 113 IRQ_TYPE_EDGE_RISING>;
+			interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>;
 			clocks = <&system_clk>, <&rtc_clk>;
 			clock-names = "system-clk", "rtc-clk";
 		};
 
+		intpol: intpol@10200100 {
+			compatible = "mediatek,mt6577-intpol";
+			reg = <0x10200100 0x1c>;
+		};
+
 		gic: interrupt-controller@10212000 {
 			compatible = "arm,cortex-a15-gic";
 			interrupt-controller;
-- 
1.8.1.1.dirty

[PATCH v2 4/4] dt-bindings: add bindings for mediatek intpol

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

Add binding documentation for Mediatek SoC GIC interrupt polarity extension.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 .../bindings/interrupt-controller/mediatek,intpol.txt    | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/mediatek,intpol.txt

diff --git a/Documentation/devicetree/bindings/interrupt-controller/mediatek,intpol.txt b/Documentation/devicetree/bindings/interrupt-controller/mediatek,intpol.txt
new file mode 100644
index 0000000..16ea372
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,intpol.txt
@@ -0,0 +1,16 @@
+Mediatek 65xx/81xx GIC interrupt polarity extension
+
+Mediatek SOCs contain controllable inverter for each GIC SPI interrupt,
+these can be used as GIC interrupt polarity extension.
+
+Required properties:
+- compatible: Compatible property value should be "mediatek,mt6577-intpol"
+
+- reg: Physical base address of the int pol registers and length of memory
+  mapped region.
+
+Example:
+       intpol: intpol@10200100 {
+               compatible = "mediatek,mt6577-intpol";
+               reg = <0x10200100 0x1c>;
+       };
-- 
1.8.1.1.dirty