linux-kernel - AT91 timer/counter as clock output from devicetree

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Message-ID: <20150626001648.GA20565@deathray>
Date:	Thu, 25 Jun 2015 19:16:48 -0500
From:	Michael Welling <mwelling@...e.org>
To:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: AT91 timer/counter as clock output from devicetree

I have run into situation with AT91 based products where I am at a
loss as to how to properly approproach implementing a driver/solution.

Several boards that I have dealt with are using the AT91's timer/counter pins
to emulate a simple clock output.

Currently, the only way I have found to emulate a clock output is to enable
the atmel,tcb-pwm driver and initialize the PWM from userspace using the
sysfs layer.

I would like to initialize the timer/counter in the kernel based on an entry
in the devicetree.

Does anyone have suggestion on how and where implement this?

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