linux-kernel - Re: Driver lis3lv02d_i2c not working on Nokia RX-51

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Message-ID: <20130217181756.GE1583@opensource.wolfsonmicro.com>
Date:	Sun, 17 Feb 2013 18:17:59 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Pali Rohár <pali.rohar@...il.com>
Cc:	Eric Piel <eric.piel@...mplin-utc.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Driver lis3lv02d_i2c not working on Nokia RX-51

On Sun, Feb 17, 2013 at 05:40:41PM +0100, Pali Rohár wrote:

> $ dmesg | grep lis3
> [  110.454345] lis3lv02d_i2c 3-001d: Failed to get supply 'Vdd': -517
> [  110.457397] i2c 3-001d: Driver lis3lv02d_i2c requests probe deferral
> [  111.507415] lis3lv02d_i2c 3-001d: Failed to get supply 'Vdd': -517
> [  111.510528] i2c 3-001d: Driver lis3lv02d_i2c requests probe deferral
> [  126.720458] lis3lv02d_i2c 3-001d: Failed to get supply 'Vdd': -517
> [  126.728149] i2c 3-001d: Driver lis3lv02d_i2c requests probe deferral
> [  135.842803] lis3lv02d_i2c 3-001d: Failed to get supply 'Vdd': -517
> [  135.856292] i2c 3-001d: Driver lis3lv02d_i2c requests probe deferral

This just looks like a basic error in the board hookup - the supplies
are not mapped for the device.  Add the supply mappings and you should
be fine.  This should have been done when the device was added, the
commit doing that looks like it was never tested in mainline as the
driver problem was fixed in October 2011 but the RX51 didn't start using
the device until May 2012.

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