From: Eric Nelson <eric.nelson@boundarydevices.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: fabio.estevam@freescale.com, alsa-devel@alsa-project.org,
lars@metafoo.de, tiwai@suse.de, lgirdwood@gmail.com,
broonie@kernel.org, jean-michel.hautbois@vodalys.com,
troy.kisky@boundarydevices.com
Subject: Re: [PATCH RFC 0/6] ASoC: sgtl5000: fix use of regulators and internal LDO
Date: Fri, 06 Mar 2015 16:31:28 -0700 [thread overview]
Message-ID: <54FA38D0.1060203@boundarydevices.com> (raw)
In-Reply-To: <20150306232429.GI8656@n2100.arm.linux.org.uk>
Hi Russell,
On 03/06/2015 04:24 PM, Russell King - ARM Linux wrote:
> On Fri, Mar 06, 2015 at 04:16:18PM -0700, Eric Nelson wrote:
>> Hi Russell,
>>
>> <snip>
>>
>> I'm not sure why the code above is needed though.
>>
>> Do you know what sequence of events causes this to fail?
>
> All that I remember is that as the mainline code stood in 3.19 etc,
> the SGTL5k would be partially detected and then I2C communication
> with it was lost. Probing the pins with a scope showed that it had
> basically lost power.
>
> The patch above is over a year old now, and I don't remember much
> more detail than that.
>
> I'm not going to be physically in a state where I can look at it for
> about a week and a bit, sorry.
>
No worries. I appreciate the feedback.
next prev parent reply other threads:[~2015-03-06 23:31 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-26 22:54 [PATCH RFC 0/6] ASoC: sgtl5000: fix use of regulators and internal LDO Eric Nelson
2015-02-26 22:54 ` [RFC PATCH 1/6] ASoC: sgtl5000: fix regulator support Eric Nelson
2015-03-06 20:04 ` Mark Brown
2015-03-06 21:09 ` Eric Nelson
2015-03-07 9:59 ` Mark Brown
2015-02-26 22:54 ` [RFC PATCH 2/6] ASoC: sgtl5000: write all default registers Eric Nelson
2015-03-06 20:14 ` Mark Brown
2015-03-06 22:24 ` Eric Nelson
2016-06-15 14:38 ` Applied "ASoC: sgtl5000: Write all default registers" to the asoc tree Mark Brown
2015-02-26 22:54 ` [RFC PATCH 3/6] ASoC: sgtl5000: initialize CHIP_ANA_POWER to power-on defaults Eric Nelson
2015-03-06 20:12 ` Mark Brown
2015-03-06 22:14 ` Eric Nelson
2015-03-07 10:28 ` Mark Brown
2015-02-26 22:54 ` [RFC PATCH 4/6] ASoC: sgtl5000: check return values Eric Nelson
2015-02-26 22:54 ` [RFC PATCH 5/6] ASoC: sgtl5000: disable internal PLL early Eric Nelson
2015-03-06 20:15 ` Mark Brown
2015-03-06 22:16 ` Eric Nelson
2016-06-15 14:38 ` Applied "ASoC: sgtl5000: Disable internal PLL early" to the asoc tree Mark Brown
2015-02-26 22:54 ` [RFC PATCH 6/6] ASoC: sgtl5000: Don't disable regulators in SND_SOC_BIAS_OFF Eric Nelson
2015-03-06 20:16 ` Mark Brown
2015-03-06 22:35 ` Eric Nelson
2015-03-07 10:41 ` Mark Brown
2015-03-06 22:49 ` [PATCH RFC 0/6] ASoC: sgtl5000: fix use of regulators and internal LDO Eric Nelson
2015-03-06 22:53 ` Russell King - ARM Linux
2015-03-06 22:58 ` Eric Nelson
2015-03-06 23:16 ` Eric Nelson
2015-03-06 23:24 ` Russell King - ARM Linux
2015-03-06 23:31 ` Eric Nelson [this message]
2015-03-07 10:45 ` Mark Brown
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