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:
> > From: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
> >
> > MT8173 intpol have 32 more irq pins, add support to it.
> >
> > Signed-off-by: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
> > Signed-off-by: Eddie Huang <eddie.huang@xxxxxxxxxxxx>
> >
>
> 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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