From: Linus Walleij <linus.walleij@linaro.org>
To: Sricharan R <r.sricharan@ti.com>
Cc: Tony Lindgren <tony@atomide.com>,
Santosh Shilimkar <santosh.shilimkar@ti.com>,
Nishanth Menon <nm@ti.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Linux-OMAP <linux-omap@vger.kernel.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Rajendra Nayak <rnayak@ti.com>, Felipe Balbi <balbi@ti.com>,
Thomas Gleixner <tglx@linutronix.de>,
Grant Likely <grant.likely@secretlab.ca>
Subject: Re: [PATCH 1/3] misc: Add crossbar driver
Date: Thu, 15 Aug 2013 22:01:20 +0200 [thread overview]
Message-ID: <CACRpkda+m82PYJsExLM6JLsLa8-bVhdvy_r_+-uKfVT2NG7Cbg@mail.gmail.com> (raw)
In-Reply-To: <520A02BA.4090805@ti.com>
On Tue, Aug 13, 2013 at 11:56 AM, Sricharan R <r.sricharan@ti.com> wrote:
> Initially irqchip was discussed, but we also have a DMA crossbar
> to map the dma-requests. Since both irq/dma crossbars should be handled,
> pinctrl was suggested as the appropriate place to handle this.
I think it is better to use irqchip.
For DMA there is already an arbiter mechanism for arbitration of
virtual channels over physical channels, this is not much different,
the DMA might need some different tweaking but should be solved
in that subsystem I think.
I don't see any way to really abstract this pretty simple crossbar
for reuse across subsystems.
Yours,
Linus Walleij
next prev parent reply other threads:[~2013-08-15 20:01 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-18 16:43 [PATCH 0/3] Add crossbar driver Sricharan R
2013-07-18 16:43 ` [PATCH 1/3] misc: " Sricharan R
2013-07-18 16:55 ` Joe Perches
2013-07-18 18:25 ` Felipe Balbi
2013-07-21 16:33 ` Linus Walleij
2013-07-18 18:56 ` Nishanth Menon
2013-07-18 23:39 ` Santosh Shilimkar
[not found] ` <51E87C98.5030001-l0cyMroinI0@public.gmane.org>
2013-07-19 0:13 ` Nishanth Menon
2013-07-19 10:48 ` Sricharan R
2013-07-19 7:17 ` Tony Lindgren
2013-07-19 10:48 ` Sricharan R
[not found] ` <51E83A4F.5080904-l0cyMroinI0@public.gmane.org>
2013-07-21 16:49 ` Linus Walleij
2013-07-22 12:20 ` Sricharan R
2013-07-22 16:23 ` Santosh Shilimkar
2013-07-24 16:08 ` Nishanth Menon
2013-07-24 16:38 ` Santosh Shilimkar
2013-07-24 16:47 ` Nishanth Menon
2013-07-24 18:43 ` Sricharan R
2013-07-24 18:51 ` Nishanth Menon
2013-07-24 18:59 ` Santosh Shilimkar
2013-08-13 8:10 ` Tony Lindgren
2013-08-13 9:56 ` Sricharan R
2013-08-13 13:29 ` Santosh Shilimkar
2013-08-15 20:01 ` Linus Walleij [this message]
2013-08-15 20:26 ` Santosh Shilimkar
2013-08-15 20:51 ` Linus Walleij
2013-08-15 21:14 ` Santosh Shilimkar
2013-08-21 21:10 ` Linus Walleij
2013-08-22 11:33 ` Sricharan R
2013-08-22 13:45 ` Santosh Shilimkar
2013-08-23 4:47 ` Rajendra Nayak
2013-08-23 6:11 ` Sricharan R
2013-08-23 6:17 ` Rajendra Nayak
2013-08-23 6:36 ` Sekhar Nori
2013-08-23 6:53 ` Sricharan R
2013-08-23 8:14 ` Sekhar Nori
2013-08-23 13:38 ` Santosh Shilimkar
2013-08-23 16:28 ` Sekhar Nori
2013-08-23 19:06 ` Linus Walleij
2013-08-23 19:44 ` Santosh Shilimkar
2013-08-13 13:28 ` Santosh Shilimkar
2013-08-14 7:27 ` Tony Lindgren
2013-07-18 16:43 ` [PATCH 2/3] ARM: dts: DRA: Add crossbar device binding Sricharan R
2013-07-18 19:04 ` Nishanth Menon
2013-07-18 16:43 ` [PATCH 3/3] ARM: DRA7xx: Enable crossbar driver for the soc Sricharan R
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