On 9/19/07, S. Fricke <[EMAIL PROTECTED]> wrote:
> Hi,
>
> how can i configure an "ext interrupt" to high-level? I want a interruption on
> IRQ2, but I checked with an oscilloscope that the pin has a low state and I
> needs a high state.
>
> I have tried, after I got the irq (with irq_of_parse_and_map), set it with
>
> set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH);
>
> But I think it is a system-configuration (irq_desc) and no
> device-configuration.
You shouldn't need to do this. You set your sense level in the device tree.
>From your previous email, your device node looks like this:
> [EMAIL PROTECTED] {
> interrupt-parent = <500>;
> interrupts = <1 2 2>;
> };
Which is IRQ2, EDGE_FALLING.
If you change your interrupts property to <1 2 0>, then your sense is
set to LEVEL_HIGH. (Seriously, you need to read the interrupts
section of Documentation/powerpc/mpc52xx-device-tree-bindings.txt.)
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
[EMAIL PROTECTED]
(403) 399-0195
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