Re: gpio: mvebu: switch to regmap for register access

[Chris Packham <Chris.Packham@xxxxxxxxxxxxxxxxxxx>]

On 09/06/17 15:36, Chris Packham wrote:
> Hi Thomas,
> 
> Doing some more testing against linux-next and I've found that this
> patch causes a flood of bad interrupts on my armada-xp-98dx3236 based
> board (kernel startup output below). If I revert this patch I can boot
> as normal.
> 
> This doesn't happen on the 98dx3236 DB or another Armada-385 based board
> I have so it's probably related something specific to this board
> (probably one of the i2c gpios based on the log messages).
> 
> Any thoughts on where I should start looking?

Sure enough I think the problem is related to a pca9555 connected to one 
of the CPU gpios.

	gpio@27 {
		#address-cells = <2>;
		#size-cells = <0>;
		compatible = "nxp,pca9555";
		reg = <0x27>;
		gpio-controller;
		#gpio-cells = <2>;
		interrupt-parent = <&gpio0>;
		interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
	};

If I remove the interrupt properties I don't see the problem.
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