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From: Daniel Mack <zonque@gmail.com>
To: Mike Turquette <mturquette@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Question about fixed-clock
Date: Tue, 19 Feb 2013 00:55:52 +0100	[thread overview]
Message-ID: <5122BF88.1050007@gmail.com> (raw)

Hi,

This might be a stupid question, but I'm somehow stuck here. I'm using a
driver with the following DTS sub-node:

	ref25: ref25M {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <25000000>;
	};

	clock-generator@0 {
				/* ... */
				#clock-cells = <1>;
				clocks = <&ref25>;
	}

The device driver for clock-generator uses something like the following
call to get its clock:

	clk = of_clk_get(np, 0);

but the return value is ERR_PTR(-ENOENT) and I also can't find this
clock in the clk debugfs tree.

This is on a OMAP/AM33xx device with kernel 3.8-rc7 plus the -next tips
of arm-soc and omap, but with no other special clock options selected in
the config. Is there anything I'm missing to correctly instantiate the
dummy clock?


Thanks for a pointer,
Daniel

             reply	other threads:[~2013-02-18 23:56 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-18 23:55 Daniel Mack [this message]
2013-02-19  0:07 ` Question about fixed-clock Daniel Mack
2013-02-19  1:33 ` Fabio Estevam
2013-02-19  9:53   ` Daniel Mack
     [not found]     ` <20130219172246.11471.14635@quantum>
2013-02-19 17:32       ` Daniel Mack
2013-03-02 14:09         ` Daniel Mack
2013-03-07 18:42     ` Afzal Mohammed
2013-03-07 22:31       ` Daniel Mack
2013-03-08  2:15         ` Mark Brown
2013-03-08 13:30           ` Daniel Mack
2013-03-09  8:26             ` Sebastian Hesselbarth
2013-03-12 18:40             ` Mark Brown
2013-02-19  3:39 ` Afzal Mohammed

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