From: js@sig21.net (Johannes Stezenbach)
To: linux-arm-kernel@lists.infradead.org
Subject: dmaengine pl08x dt crash
Date: Wed, 23 Mar 2016 17:35:17 +0100 [thread overview]
Message-ID: <20160323163517.GA9563@sig21.net> (raw)
In-Reply-To: <20160323162309.GA9472@sig21.net>
On Wed, Mar 23, 2016 at 05:23:09PM +0100, Johannes Stezenbach wrote:
> On Wed, Mar 23, 2016 at 05:12:13PM +0100, Linus Walleij wrote:
> > https://git.kernel.org/cgit/linux/kernel/git/linusw/linux-nomadik.git/log/?h=pl08x-dma
> >
> > dma: pl08x: support fixed signal assignment
This method of using vendor_data for the fixed_signals flag
doesn't help me much, as my IP is a plain ARM pl081.
I'm also not sure how it would help, since pl08x_of_probe()
is only called for !pl08x->pd (no platform_data) and thus
pl08x_dma_init_virtual_channels() sees 0 channels.
And with platform_data the driver worked fine with fixed channels.
> > dma: pl08x: allocate OF slave channel data at probe time
This looks ore promising, I'm checking it.
> I'll give it a try. My platform also has fixed channels,
> previously it used platform data but I always thought it is
> ugly, so I tried the new dt support.
Of course I neglected to mention I'm using linux-4.5,
in case you were wondering.
Johannes
next prev parent reply other threads:[~2016-03-23 16:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-23 15:40 dmaengine pl08x dt crash Johannes Stezenbach
2016-03-23 16:12 ` Linus Walleij
2016-03-23 16:23 ` Johannes Stezenbach
2016-03-23 16:35 ` Johannes Stezenbach [this message]
2016-03-23 17:26 ` Johannes Stezenbach
2016-03-23 21:42 ` Linus Walleij
2016-03-25 23:34 ` Linus Walleij
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