linux-kernel - Re: [PATCH] spi: sirf: add reset controller dependency

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Message-ID: <11771349.MCSxFTdomh@wuerfel>
Date:	Tue, 24 Feb 2015 14:34:06 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Chen-Yu Tsai <wens@...e.org>
Cc:	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Marek Vasut <marex@...x.de>, Wolfram Sang <wsa@...-dreams.de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-spi@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Barry Song <Baohua.Song@....com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH] spi: sirf: add reset controller dependency

On Tuesday 24 February 2015 18:56:44 Chen-Yu Tsai wrote:
> > --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
> > +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
> > @@ -1,11 +1,11 @@
> >  config STMMAC_ETH
> >         tristate "STMicroelectronics 10/100/1000 Ethernet driver"
> >         depends on HAS_IOMEM && HAS_DMA
> > +       depends on RESET_CONTROLLER
> >         select MII
> >         select PHYLIB
> >         select CRC32
> >         select PTP_1588_CLOCK
> > -       select RESET_CONTROLLER
> 
> I was the one that introduced this. At the time a generic binding for the
> stmmac core was requested, which supported an optional reset control. There
> wasn't an *_optional stub available, so I went with this. See
> 
>     http://lists.infradead.org/pipermail/linux-arm-kernel/2014-January/224684.html
> b424080a9e08
> With commit b424080a9e08 ("reset: Add optional resets and stubs") in, I
> think using devm_reset_control_get() in the driver is the proper solution.
> The hardware is found in quite a few platforms, and not all of them have
> reset controllers.

I suppose you mean devm_reset_control_get_option() instead of
devm_reset_control_get()?

Yes, that sounds right.

	Arnd
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