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From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Laxman Dewangan
	<ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
	"Maciej S. Szmigiero"
	<mail-APzI5cXaD1zVlRWJc41N0YvC60bnQu0Y@public.gmane.org>,
	Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
	Thierry Reding
	<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Alexandre Courbot
	<gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Tegra boots failing due to as3722 I/O errors
Date: Tue, 29 Mar 2016 12:03:19 -0700	[thread overview]
Message-ID: <20160329190319.GE2350@sirena.org.uk> (raw)

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Hi,

Currently the Jetson TK1 is failing to get regulators for MMC with at
least my regulator tree and probably -next also due to:

[    1.665750] as3722 4-0040: AS3722 with revision 0x1 found
[    1.682945] +VDDIO_SDMMC3: failed to get the current voltage(-22)
[    1.689135] as3722-regulator as3722-regulator: regulator 13 register failed -22
[    1.697593] as3722-regulator: probe of as3722-regulator failed with error -22

The get voltage operation here is just a simple mapping of a bitfield in
the regmap which suggests that the underlying problem is somewhere
further down the stack like the MFD or I2C drivers.  The error is
-EINVAL which suggests something like the register not being marked as
readable but the _VOLTAGE_REG registers appear to be marked as readable
in the MFD.

Full log for one boot at:

  https://storage.kernelci.org/broonie-regulator/v4.6-rc1-24-ga7e614dd1f91/arm-multi_v7_defconfig+CONFIG_SMP=n/lab-mhart/boot-tegra124-jetson-tk1.html

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             reply	other threads:[~2016-03-29 19:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-29 19:03 Mark Brown [this message]
     [not found] ` <20160329190319.GE2350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-30 11:31   ` Tegra boots failing due to as3722 I/O errors Jon Hunter
     [not found]     ` <56FBB923.4000302-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-03-30 13:15       ` Jon Hunter
     [not found]         ` <56FBD164.7040707-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-03-30 16:46           ` Mark Brown
     [not found]             ` <20160330164646.GH2350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-31 14:45               ` Jon Hunter

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