Hi Arnd,

On Wed, 2014-12-10 at 12:00 +0100, Arnd Bergmann wrote:

On Wednesday 10 December 2014 18:50:00 Eddie Huang wrote:

quoted

From: Yingjoe Chen <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>

MT8173 intpol have 32 more irq pins, add support to it.

Signed-off-by: Yingjoe Chen <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Signed-off-by: Eddie Huang <eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>

How about adding a property for the number of irq pins and leave the
old compatible string in place? I don't think it would be good if
we have to update this driver for each new SoC that uses this
irqchip just to change one number.

	Arnd

OK, I'll change to something like this in next version:

--- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,sysirq.txt
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,sysirq.txt

@@ -17,12 +17,17 @@ Required properties:
   use the same interrupt-cells format as GIC.
 - reg: Physical base address of the intpol registers and length of memory
   mapped region.

+Optional properties:
+- mediatek,intpol-number: The number of interrupts supported by intpol,
+  default 224 if omitted.
+
 Example:
        sysirq: interrupt-controller@10200100 {
                compatible = "mediatek,mt6589-sysirq", "mediatek,mt6577-sysirq";
                interrupt-controller;
                #interrupt-cells = <3>;
                interrupt-parent = <&gic>;
                reg = <0 0x10200100 0 0x1c>;
+               mediatek,intpol-number = <224>;
        };

Joe.C


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