From: arnd@arndb•de (Arnd Bergmann)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 4/7] ARM: pxa: add devicetree code for irq handling
Date: Mon, 30 Jul 2012 08:31:32 +0000 [thread overview]
Message-ID: <201207300831.32988.arnd@arndb.de> (raw)
In-Reply-To: <50159FBC.2010409@gmail.com>
On Sunday 29 July 2012, Daniel Mack wrote:
> Hmm, PXA25x (which does not feature IRQ priorities) shares a fair amount
> of peripherals with other PXA series (which do have support for that). I
> would much like to reflect that fact by inherhiting device nodes from
> one dtsi to the other. Hence, if at all, we would need to have two cells
> always, and just ignore the second argument on PXA25x.
But that can only work if the interrupt numbers are identical between PXA25x
and the other SoCs. Are they?
> And I also wonder whether using the second spec value for a priority
> wouldn't be somehow abusive? Isn't that considered to denote the trigger
> flags in contexts of interrupt controllers? At least, that is what
> irq_domain_xlate_twocell() assumes.
You would not use irq_domain_xlate_twocell in that scenario but provide your
own, which is ok. Interpreting the second cell as the trigger flags is just
a convenient default because it's the most common use for that.
Arnd
next prev parent reply other threads:[~2012-07-30 8:31 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-26 19:16 [PATCH v2 0/7] Assorted PXA3xx DT patches Daniel Mack
2012-07-26 19:16 ` [PATCH v2 1/7] RTC: add DT bindings to pxa-rtc Daniel Mack
2012-07-26 19:16 ` [PATCH v2 2/7] MMC: pxa-mci: add DT bindings Daniel Mack
2012-07-26 19:16 ` [PATCH v2 3/7] MTD: pxa3xx-nand: add devicetree bindings Daniel Mack
2012-07-26 19:16 ` [PATCH v2 4/7] ARM: pxa: add devicetree code for irq handling Daniel Mack
2012-07-28 7:17 ` Haojian Zhuang
2012-07-28 9:56 ` Daniel Mack
2012-07-28 15:42 ` Haojian Zhuang
2012-07-29 14:09 ` Arnd Bergmann
2012-07-29 20:40 ` Daniel Mack
2012-07-30 8:31 ` Arnd Bergmann [this message]
2012-07-30 8:34 ` Daniel Mack
2012-07-30 8:55 ` Haojian Zhuang
2012-07-30 9:31 ` Daniel Mack
2012-07-31 12:18 ` Arnd Bergmann
2012-07-29 15:08 ` Daniel Mack
2012-07-29 15:54 ` Haojian Zhuang
2012-07-29 19:01 ` Daniel Mack
2012-07-30 1:20 ` Haojian Zhuang
2012-07-30 1:24 ` Haojian Zhuang
2012-07-30 7:11 ` Daniel Mack
2012-07-29 16:13 ` Haojian Zhuang
2012-07-26 19:16 ` [PATCH v2 5/7] ARM: pxa3xx: skip default device initialization when booting via DT Daniel Mack
2012-07-26 19:16 ` [PATCH v2 6/7] ARM: pxa3xx: add generic DT machine code Daniel Mack
2012-07-26 19:16 ` [PATCH v2 7/7] ARM: pxa: add .dtsi files Daniel Mack
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