Thread (9 messages) 9 messages, 2 authors, 2014-11-24

[PATCH v7 4/4] dt-bindings: add bindings for mediatek sysirq

From: mark.rutland@arm.com (Mark Rutland)
Date: 2014-11-19 18:07:46
Also in: linux-devicetree, lkml

On Wed, Nov 19, 2014 at 02:14:11PM +0000, Yingjoe Chen wrote:
quoted hunk ↗ jump to hunk
Add binding documentation for Mediatek SoC SYSIRQ.

Signed-off-by: Yingjoe Chen <redacted>
---
 .../bindings/arm/mediatek/mediatek,sysirq.txt      | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,sysirq.txt
diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,sysirq.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,sysirq.txt
new file mode 100644
index 0000000..8669536
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,sysirq.txt
@@ -0,0 +1,26 @@
+Mediatek 65xx/81xx sysirq
+
+Mediatek SOCs sysirq support controllable irq inverter for each GIC SPI
+interrupt.
+
+Required properties:
+- compatible: should be one of:
+	"mediatek,mt8135-sysirq"
+	"mediatek,mt8127-sysirq"
+	"mediatek,mt6589-sysirq"
+	"mediatek,mt6582-sysirq"
+	"mediatek,mt6577-sysirq"
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Must use the same cells/format as parent controller.
+- interrupt-parent: phandle of irq domain parent for sysirq.
I'm concerned that this sounds very general while the binding assumes
the GICv2 interrupt-specifier format. Either the driver needs to become
more general, or this needs to be tightened up.

It's also odd to say "irq domain parent", as that's purely a Linux
construct and has nothing to do with the HW.

Thanks,
Mark.
+- reg: Physical base address of the intpol registers and length of memory
+  mapped region.
+
+Example:
+	sysirq: interrupt-controller at 10200100 {
+		compatible = "mediatek,mt6589-sysirq", "mediatek,mt6577-sysirq";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
+		reg = <0 0x10200100 0 0x1c>;
+	};
-- 
1.8.1.1.dirty
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