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From: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
To: Geert Uytterhoeven <geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
Cc: "Sascha Hauer" <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
	"Shawn Guo" <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	kernelnewbies
	<kernelnewbies-7JyXY6prKcjpASu1u0TL5ti2O/JbrIOy@public.gmane.org>,
	"Maxime Ripard"
	<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
	"Mark Rutland" <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	"Fabio Estevam"
	<fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
	devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"\"Marek Vašut\"" <marex-ynQEQJNshbs@public.gmane.org>
Subject: Re: Question about shared interrupts in devicetree
Date: Thu, 9 Apr 2015 19:02:44 +0200 (CEST)	[thread overview]
Message-ID: <619385522.136300.1428598965058.JavaMail.open-xchange@oxbaltgw02.schlund.de> (raw)
In-Reply-To: <CAMuHMdXpByUO4S_Qdhvbm8PF8hfGTtqr7aA9mmRE5Dk6LrZkJw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Hi Geert,

> Geert Uytterhoeven <geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org> hat am 9. April 2015 um 09:37
> geschrieben:
>
> [...]
> 
> >
> > Could you please explain the benefit / reason of this approach?
>
> Since you have different logical modules in the subsystem, this allows to
> model
> the subsystem as separate modules and a separate interrupt controller, and
> have separate drivers for all modules.
>
> Look at da9063 for an example (there are more according to "git grep irq_chip
> -- drivers/mfd", but not all of them may have DT bindings).
>

thanks for the hint, but this makes my patch series not really smaller. I
invested a lot of time (started in September 2014) and i want to submit at least
1 of the 3 drivers soon as possible.

I think the best approch would be to submit my series with option B as a
proposal. In the discussion about the patch it would be easier to decide if a
interrupt controller is really necessary.

> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
> geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like
> that.
> -- Linus Torvalds

Stefan
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WARNING: multiple messages have this Message-ID (diff)
From: stefan.wahren@i2se.com (Stefan Wahren)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Question about shared interrupts in devicetree
Date: Thu, 9 Apr 2015 19:02:44 +0200 (CEST)	[thread overview]
Message-ID: <619385522.136300.1428598965058.JavaMail.open-xchange@oxbaltgw02.schlund.de> (raw)
In-Reply-To: <CAMuHMdXpByUO4S_Qdhvbm8PF8hfGTtqr7aA9mmRE5Dk6LrZkJw@mail.gmail.com>

Hi Geert,

> Geert Uytterhoeven <geert@linux-m68k.org> hat am 9. April 2015 um 09:37
> geschrieben:
>
> [...]
> 
> >
> > Could you please explain the benefit / reason of this approach?
>
> Since you have different logical modules in the subsystem, this allows to
> model
> the subsystem as separate modules and a separate interrupt controller, and
> have separate drivers for all modules.
>
> Look at da9063 for an example (there are more according to "git grep irq_chip
> -- drivers/mfd", but not all of them may have DT bindings).
>

thanks for the hint, but this makes my patch series not really smaller. I
invested a lot of time (started in September 2014) and i want to submit at least
1 of the 3 drivers soon as possible.

I think the best approch would be to submit my series with option B as a
proposal. In the discussion about the patch it would be easier to decide if a
interrupt controller is really necessary.

> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
> geert at linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like
> that.
> -- Linus Torvalds

Stefan

  parent reply	other threads:[~2015-04-09 17:02 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-04 21:40 Question about shared interrupts in devicetree Stefan Wahren
2015-04-04 21:40 ` Stefan Wahren
     [not found] ` <2039290448.1160624.1428183613109.JavaMail.open-xchange-h4m1HHXQYNGvCDav5jC2oMgmgJlYmuWJ@public.gmane.org>
2015-04-07 11:29   ` Mark Rutland
2015-04-07 11:29     ` Mark Rutland
2015-04-07 17:06     ` Stefan Wahren
2015-04-07 17:06       ` Stefan Wahren
     [not found]       ` <2146749411.2111.1428426398346.JavaMail.open-xchange-h4m1HHXQYNGvCDav5jC2oMgmgJlYmuWJ@public.gmane.org>
2015-04-08 19:20         ` Geert Uytterhoeven
2015-04-08 19:20           ` Geert Uytterhoeven
     [not found]           ` <CAMuHMdUaQTotvzRiGczyVxfeu34UNLMmwU=aVGTP6rDSHUK45Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-09  7:24             ` Stefan Wahren
2015-04-09  7:24               ` Stefan Wahren
     [not found]               ` <55262935.9080005-eS4NqCHxEME@public.gmane.org>
2015-04-09  7:37                 ` Geert Uytterhoeven
2015-04-09  7:37                   ` Geert Uytterhoeven
     [not found]                   ` <CAMuHMdXpByUO4S_Qdhvbm8PF8hfGTtqr7aA9mmRE5Dk6LrZkJw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-09 17:02                     ` Stefan Wahren [this message]
2015-04-09 17:02                       ` Stefan Wahren
2015-04-22 18:18     ` Stefan Wahren
2015-04-22 18:18       ` Stefan Wahren

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