Linux device tree interrupt IDs

jasonhendrix — Fri, 19 Feb 2016 22:35:58 GMT

I'm trying to enable the SECMON_LP RTC on the LS1021ATWR dev board using the svns_rtc driver. I am trying to create an entry in the device tree file ls1021a.dtsi. The bindings documentation states that the interrupts must be specified. From table 5-1 of the ls1021a ARM, I see that the SECMON module is tied to PPI interrupts 142 and 143. But looking at the .dtsi, I can't map any of the interrupt IDs in the device tree to table 5-1. Where can I find the proper device tree interrupt IDS for the SECMON_LP RTC? Thanks.

-Jason

Re: Linux device tree interrupt IDs

bpe — Sat, 20 Feb 2016 03:22:18 GMT

Basic information regarding interrupts property encoding can be found here:

Linux/Documentation/devicetree/bindings/arm/gic.txt - Linux Cross Reference - Free Electrons

The second cell, which is the interrupt number, is the chip Manual Table 5-1 value minus 32. See how

mapping is done in gic_irq_domain_xlate(), file irq-gic.c

Have a great day,
Platon

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LayerscapeのトピックLinux device tree interrupt IDs

Linux device tree interrupt IDs

Re: Linux device tree interrupt IDs