[PATCH 03/10] dt-bindings: interrupt-controllers: add description of SIC1 and SIC2

Vladimir Zapolskiy vz at mleia.com
Fri Nov 20 09:52:56 PST 2015

Hi Rob,

On 20.11.2015 18:58, Rob Herring wrote:
> On Fri, Nov 20, 2015 at 03:28:38AM +0200, Vladimir Zapolskiy wrote:
>> NXP LPC32xx has three interrupt controllers, namely root Main
>> Interrupt Controller (MIC) and two supplementary Sub Interrupt
>> Controllers (SIC1 and SIC2), four interrupt outputs from SIC1 and SIC2
>> are connected to MIC.
>> Also the change describes two additional optional properties:
>> * interrupt-controller-name - human readable name of an interrupt
>>   controller,
> Why? compatible is human readable. If you don't like that, then put the 
> string in the driver.

in runtime I'd like to differentiate various IRQ chips by name. Here for
example I have one compatible "*-sic" and two actual IRQ chips SIC1 and
SIC2. If I read /proc/interrupts or /sys/kernel/debug/irq_domain_mapping
I would prefer to visualize interrupts from SIC1 and SIC2.

I understand that this property is not hardware specific, but there are
plenty of similar properties like "label" etc. Probably renaming of the
property may help?

>> * wakeup-sources - list of mappings between a hardware interrupt and
>>   its correspondent wakeup source to exit CPU STOP mode.
> This needs further discussion as I mentioned.


> The rest looks fine.

Thanks for review.

Best wishes,

More information about the linux-arm-kernel mailing list