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Message-ID: <20180313140303.wkwsxhhm5lxbzp5a@flea>
Date: Tue, 13 Mar 2018 15:03:03 +0100
From: Maxime Ripard <maxime.ripard@...tlin.com>
To: Chris Obbard <chris@...tudio.com>
Cc: broonie@...ena.org.uk, Code Kipper <codekipper@...il.com>,
Chen-Yu Tsai <wens@...e.org>,
linux-sunxi <linux-sunxi@...glegroups.com>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>,
lgirdwood@...il.com, linux-kernel@...r.kernel.org,
alsa-devel@...a-project.org, be17068@...rbole.bo.it
Subject: Re: [linux-sunxi] Re: [PATCH v2 6/6] ASoC: sun4i-i2s: Add support
for loopback
On Tue, Mar 13, 2018 at 01:39:44PM +0000, Chris Obbard wrote:
> >> +- loopback: if this property is present then the dai is configured in
> >> + loopback mode where the output fifo is redirected to the input
> >> + fifo.
> >
> > This really doesn't seem like something that ought to go into the DT
> > and hence ABI given that there's obviously no reason to use this in
> > production. Just make it be a #define in the code or something.
>
> It would be nice to have this as an optional devicetree property so
> when testing JACK latency etc I don't have to manually re-compile a
> kernel...
Another one might also argue that having to recompile the DT and
reflash the whole firmware or EEPROM is overkill for just testing JACK
latency.
Can't we create a module parameter for it?
Maxime
--
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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