From: Tero Kristo <t-kristo-l0cyMroinI0@public.gmane.org>
To: Stefan Assmann <sassmann-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
mturquette-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
pawel.moll-5wv7dgnIgG8@public.gmane.org,
peter.ujfalusi-l0cyMroinI0@public.gmane.org,
"Andreas Färber" <afaerber-l3A5Bk7waGM@public.gmane.org>
Subject: Re: [PATCH 2/2] clk: initial clock driver for TWL6030
Date: Thu, 31 Jul 2014 16:16:17 +0300 [thread overview]
Message-ID: <53DA41A1.5010900@ti.com> (raw)
In-Reply-To: <53DA2F53.8010405-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
<snip>
>>> +static int of_twl6030_clk32kg_probe(struct platform_device *pdev)
>>> +{
>>> + struct device_node *node = pdev->dev.of_node;
>>> + struct clk *clk;
>>> +
>>> + if (!node)
>>> + return -ENODEV;
>>> +
>>> + clk = devm_clk_get(&pdev->dev, "clk32kg");
>>> + if (IS_ERR(clk))
>>> + return PTR_ERR(clk);
>>> +
>>> + return clk_prepare(clk);
>>
>> This is plain wrong as pointed out earlier. The driver that uses the
>> clock must enable it.
>
> Understood. I'll change it to clk_prepare_enable().
Nono, remove it completely from here. The clock driver should not enable
itself by default. The clock itself has some sort of customer somewhere
(like am33xx-wifi driver), which should request for the clock and enable
it only when needed.
-Tero
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next prev parent reply other threads:[~2014-07-31 13:16 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 14:02 [PATCH 0/2] Enable wifi on pandaboard Stefan Assmann
[not found] ` <1406728949-7560-1-git-send-email-sassmann-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-30 14:02 ` [PATCH 1/2] mfd: twl-core: move TWL6030 defines to twl.h Stefan Assmann
[not found] ` <1406728949-7560-2-git-send-email-sassmann-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-31 8:36 ` Lee Jones
2014-07-31 8:46 ` Stefan Assmann
2014-07-30 14:02 ` [PATCH 2/2] clk: initial clock driver for TWL6030 Stefan Assmann
2014-07-30 14:29 ` Andreas Färber
[not found] ` <53D90159.7040307-l3A5Bk7waGM@public.gmane.org>
2014-07-30 14:36 ` Stefan Assmann
[not found] ` <1406728949-7560-3-git-send-email-sassmann-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-30 17:50 ` Mark Brown
[not found] ` <20140730175033.GA17528-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2014-07-31 9:56 ` Stefan Assmann
[not found] ` <53DA12BF.1060008-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-31 11:05 ` Mark Brown
[not found] ` <20140731110531.GH17528-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2014-07-31 12:04 ` Stefan Assmann
[not found] ` <53DA30CD.5020903-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-31 19:14 ` Mike Turquette
2014-07-31 11:28 ` Tero Kristo
[not found] ` <53DA284D.6030404-l0cyMroinI0@public.gmane.org>
2014-07-31 11:58 ` Stefan Assmann
[not found] ` <53DA2F53.8010405-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-31 13:16 ` Tero Kristo [this message]
2014-07-31 12:26 ` Peter Ujfalusi
[not found] ` <53DA3613.9010305-l0cyMroinI0@public.gmane.org>
2014-07-31 12:54 ` Stefan Assmann
[not found] ` <53DA3C68.3020406-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-31 12:58 ` Peter Ujfalusi
[not found] ` <53DA3D66.1030407-l0cyMroinI0@public.gmane.org>
2014-07-31 14:05 ` Stefan Assmann
[not found] ` <53DA4D37.4030408-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-07-31 19:20 ` Mike Turquette
2014-08-01 10:04 ` Stefan Assmann
[not found] ` <53DB6633.3020005-llIHtaV5axyzQB+pC5nmwQ@public.gmane.org>
2014-08-01 10:38 ` Mark Brown
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