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Commit Graph

31383 Commits

Author SHA1 Message Date
Codrin Ciubotariu
7aac8d13fc
ASoC: codecs: ad193x: Remove capture support for codecs without ADC
Some ad193x codecs don't have ADCs, so they have no capture capabilities.
This way, we can use this driver in multicodec cards.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-18 17:40:50 +00:00
Colin Ian King
cb8cdb6f33
ASoC: fsi: fix spelling mistake "doens't" -> "doesn't"
There is a spelling mistake in a dev_err message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-18 17:07:28 +00:00
Sylwester Nawrocki
6e434122d9
ASoC: samsung: i2s: Prevent potential NULL platform data dereference
When np is NULL i2s_pdata could also be NULL but i2s_pdata is now being
dereferenced without proper check. Fix this and shorten the error message
so we don't exceed 80 characters limit.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 16:17:36 +00:00
Sylwester Nawrocki
76d9c68b36
ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag
There is now no users of this flag so remove it together with
related code.  The chan_name field of snd_dmaengine_dai_dma_data
data structure is not removed as it is still in use by the PXA
platform.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 16:17:35 +00:00
Adam Thomson
541ccdc113
ASoC: da7219: Update TDM usage to be more flexible
The previous implementatation was restrictive with regards to
BCLK rates for slave mode where the driver would not allow rates
the codec couldn't provide itself as clock master. The codec
is able to automatically determine and handle whatever rate is
provided so this restriction isn't necessary for slave mode. The
code was also flawed with regards to setting of the frame offset
as using rx_mask to explicitly set the offset has the knock on
effect of impacting the min and max channels for the codec, in
soc_pcm_hw_params() through the call to
soc_pcm_codec_params_fixup().

With this update, the driver now only limits frame size if codec
is clock master, and dynamically determines the BCLK offset
relating to WCLK using the tx_mask for slot offset along with the
slot width provided.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 14:49:59 +00:00
Adam Thomson
9fd729542c
ASoC: da7219: Add support for master mode BCLK rate adjustment
Previously the driver would default the BCLK periods per WCLK to
64, to cover all possible non-TDM scenarios when the codec was
DAI clock master. However some devices require a lower BCLK rate
to operate correctly so with this in mind, this commit updates
the code to be more dynamic, with BCLK rate now based on SR and
word length provided to hw_params().

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 14:48:07 +00:00
Sylwester Nawrocki
c1b2db4d03
ASoC: samsung: i2s: Convert to SPDX License Indentifier
Replace GPL v2.0 license statements with SPDX license identifier.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 14:41:13 +00:00
Sylwester Nawrocki
9f9f8a5b79
ASoC: samsung: i2s: Comments clean up
Spelling error fixes, upper/lower case letter changes.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 14:40:58 +00:00
Sylwester Nawrocki
c5ba619247
ASoC: samsung: i2s: Change indentation in SAMSUNG_I2S_FMTS definition
Change indentation so this macro definition spans 2 rows and looks
more consistent with surrounding code.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 14:40:44 +00:00
Sylwester Nawrocki
eb540d3988
ASoC: samsung: i2s: Simplify pri_dai, sec_dai pointers usage
If the probe call is on the primary DAI we can use 'other' in place of
i2s->sec_dai, if the probe call is on the secondary DAI we can use 'i2s'
in place of other->sec_dai.

While at it fix one whitespace issue.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 14:38:54 +00:00
Wen Yang
1c3816a194
ASoC: stm32: sai: add missing put_device()
The of_find_device_by_node() takes a reference to the underlying device
structure, we should release that reference.

Fixes: 7dd0d83558 ("ASoC: stm32: sai: simplify sync modes management")
Signed-off-by: Wen Yang <yellowriver2010@hotmail.com>
Acked-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:12:07 +00:00
Sylwester Nawrocki
0f928c19b6
ASoC: samsung: Specify DMA channel names through custom DMA config
This is a part of conversion of Samsung platforms to use the custom DMA
config for specifying DMA channel names, in addition to passing custom
DMA device for the secondary CPU DAI's "PCM" component for some variants
of the I2S controller.

We also don't set the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME any more
as setting it wouldn't allow to specify DMA channels through the custom
DMA config.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:06:01 +00:00
Sylwester Nawrocki
bc3cf17b57
ASoC: samsung: odroid: Add support for secondary CPU DAI
This patch adds DPCM links in order to support the secondary I2S interface.
For the secondary PCM interface to be actually available one more entry
should be added to the sound-dai property in sound/cpu node in DT.
The changes in driver are done in a way so we are backwards compatible
with existing DTS/DTB, i.e. if the cpu sound-dai property contains only
one entry only one PCM will be registered.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:05:46 +00:00
Sylwester Nawrocki
defc67c6e3
ASoC: samsung: i2s: Get rid of a static spinlock
This patch makes the spinlock serializing access to the primary/secondary
PCM a per I2S controller lock, rather than a global one. There is no need
to have a global lock across multiple I2S controllers in the SoC.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:05:31 +00:00
Sylwester Nawrocki
5944170f49
ASoC: samsung: i2s: Move quirks data to common driver data structure
The quirk flags are common for the primary and the secondary DAI
so move respective field from struct i2s_dai to common driver data
structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:05:16 +00:00
Sylwester Nawrocki
5bfaeddc26
ASoC: samsung: i2s: Move IP variant data to common driver data structure
The IP variant data is another thing common for both DAIs, move it
to the driver's common data structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:05:01 +00:00
Sylwester Nawrocki
9d7939c929
ASoC: samsung: i2s: Drop spinlock pointer from i2s_dai data structure
As we now have the 'priv' pointer in most of the places we can use
priv->lock directly, dropping extra indirection in the SFR region
spinlock access.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:04:45 +00:00
Sylwester Nawrocki
e2e16fa6a3
ASoC: samsung: i2s: Move SFR pointer to common driver data structure
The SFR region is common for both DAIs so move related data structure
field from struct i2s_dai to the common driver data structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 13:02:47 +00:00
Wei Yongjun
a4cbb465bc
ASoC: cros_ec_codec: Make symbol 'cros_ec_dai' static
Fixes the following sparse warning:

sound/soc/codecs/cros_ec_codec.c:209:27: warning:
 symbol 'cros_ec_dai' was not declared. Should it be static?

Fixes: b291f42a37 ("ASoC: cros_ec_codec: Add codec driver for Cros EC")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:52:56 +00:00
Wei Yongjun
03bf3aeb03
ASoC: mediatek: mt8183: make some functions static
Fixes the following sparse warnings:

sound/soc/mediatek/mt8183/mt8183-dai-i2s.c:966:5: warning:
 symbol 'mt8183_dai_i2s_get_share' was not declared. Should it be static?
sound/soc/mediatek/mt8183/mt8183-dai-i2s.c:986:5: warning:
 symbol 'mt8183_dai_i2s_set_priv' was not declared. Should it be static?

Fixes: a94aec035a ("ASoC: mediatek: mt8183: add platform driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:52:47 +00:00
YueHaibing
51bef0f378
ASoC: cs35l36: Remove unused including <linux/version.h>
Remove including <linux/version.h> that don't need it.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:52:33 +00:00
Sylwester Nawrocki
81bcbf2c72
ASoC: samsung: i2s: Move registers cache to common driver data structure
There is no need to keep the PM suspend/resume register cache separate
for each DAI as those registers are common, move related i2s_dai data
structure to the driver's common data structure.  This will allow us
to simplify the code a little eventually and to make it easier to follow.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:46:38 +00:00
Sylwester Nawrocki
3b0fa51ffd
ASoC: samsung: i2s: Move opclk data to common driver data structure
The clock for generating I2S signals is also common for both CPU DAIs
so move it to the driver's common data structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:46:23 +00:00
Sylwester Nawrocki
b5d015e68e
ASoC: samsung: i2s: Move core clk to the driver common data structure
The core clock is also common for both CPU DAIs so move it to
the driver's private data structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:46:08 +00:00
Sylwester Nawrocki
64aba9bca5
ASoC: samsung: i2s: Add widgets and routes for DPCM support
This patch adds DAPM widgets required to model the internal mixer
of the I2S controller merging audio streams from the primary and
from the secondary PCM interface.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:45:53 +00:00
Sylwester Nawrocki
89d2e83148
ASoC: samsung: i2s: Move clk supplier data to common driver data structure
Having the clocks provider data in struct samsung_i2s_priv, i.e. per the I2S
controller instance, rather than per CPU DAI better models the hardware and
simplifies the code a little. The clock provider is common for both DAIs.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:45:38 +00:00
Mark Brown
3636887ac6
Merge branch 'for-5.0' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.1 2019-02-13 11:45:08 +00:00
Sylwester Nawrocki
7196c64c7d
ASoC: samsung: i2s: Restore support for the secondary PCM
This patch introduces again registration of additional platform device as
we still need it for registering the secondary dmaengine PCM component.

This patch in most part is a revert of changes done in commit
be2c92eb64 ("ASoC: samsung: i2s: Remove virtual device for secondary DAI")

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-13 11:42:40 +00:00
Pierre-Louis Bossart
c5898050fe
ASoC: Intel: soc-acpi: cnl-match.c: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:55:48 +00:00
Pierre-Louis Bossart
fc906fda39
ASoC: Intel: soc-acpi: icl-match: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:55:38 +00:00
Pierre-Louis Bossart
2eddca128b
ASoC: Intel: soc-acpi: hsw-bdw-match: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:55:29 +00:00
Pierre-Louis Bossart
3f4d9d67c3
ASoC: Intel: soc-acpi: glk-match: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:55:19 +00:00
Pierre-Louis Bossart
9eebe4372f
ASoC: Intel: soc-acpi: cht-match: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:55:09 +00:00
Pierre-Louis Bossart
f01d00c300
ASoC: Intel: soc-acpi: byt-match: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:55:00 +00:00
Pierre-Louis Bossart
dcc9de2ebe
ASoC: Intel: soc-acpi: bxt-match: remove asoc_plat_name field
This field was never used, let's remove it

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:54:50 +00:00
Pierre-Louis Bossart
a5b1e22845
ASoC: Intel: icl-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:54:41 +00:00
Pierre-Louis Bossart
bb2538e28a
ASoC: Intel: hsw-bdw-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:54:31 +00:00
Pierre-Louis Bossart
e576b09791
ASoC: Intel: hda-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:54:22 +00:00
Pierre-Louis Bossart
6d356d5229
ASoC: Intel: glk-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:54:12 +00:00
Pierre-Louis Bossart
7466e749a3
ASoC: Intel: cnl-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:54:01 +00:00
Pierre-Louis Bossart
2e441dea9f
ASoC: Intel: cht-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:53:52 +00:00
Pierre-Louis Bossart
528f07152a
ASoC: Intel: byt-match.c: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:53:42 +00:00
Pierre-Louis Bossart
e529a9d44a
ASoC: Intel: bxt-match: remove prefix for SOF files
Prefix is now handled in the code. This allows for default and
alternate paths, and more flexibility for OEMs and distros

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:51:44 +00:00
Sylwester Nawrocki
a404b72d2b
ASoC: samsung: i2s: Convert to single component with multiple DAIs
This patch includes minimal changes as a prerequisite for adding support
for the Exynos secondary I2S interface as second DAI of the I2S component.
Doing it that way allows to avoid problems as indicated in commmit
6b01e0365b1689 ("ASoC: samsung: i2s: disable secondary DAI until it gets fixed")

The samsung_i2s_get_pri_dai() helper added in this patch is temporary and
will be removed in one of subsequent patches.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:32:14 +00:00
Sylwester Nawrocki
96f06cde2c
ASoC: samsung: dmaengine: Allow to specify custom DMA device
The additional function argument will allow to select proper DMA device
for requesting DMA channel for the secondary CPU DAI.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:31:58 +00:00
Sylwester Nawrocki
10cbf3507b
ASoC: dmaengine: Extend use of chan_names provided in custom DMA config
There are currently two ways to specify custom DMA channel names:
 - through the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag and
   snd_dmaengine_dai_dma_data data structure,
 - through chan_names field of struct snd_dmaengine_pcm_config.

In order to replace the DAI DMA data method with the custom DMA config
one on non-DT platforms the dmaengine_pcm_new() function is extended
to also consider channel names specified in the custom DMA config.
If both config->chan_names and dma_data->chan_name are provided
the former will be used.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:31:42 +00:00
Sylwester Nawrocki
51256d348c
ASoC: dmaengine: Improve of_node test in dmaengine_pcm_request_chan_of()
Currently when of_node of the "PCM" device is null
dmaengine_pcm_request_chan_of() function will bail out, including cases
when custom DMA device is intended to be used.  To have the channels
properly requested when custom DMA device is provided extend the of_node
test to also consider dma_dev->of_node.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:29:29 +00:00
Sylwester Nawrocki
323fb7b947
ASoC: samsung: i2s: Fix prescaler setting for the secondary DAI
Make sure i2s->rclk_srcrate is properly initialized also during
playback through the secondary DAI.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:25:42 +00:00
Mathieu Malaterre
595d2f74cd
ASoC: Use __printf markup to silence compiler
Silence warnings (triggered at W=1) by adding relevant __printf
attributes.

  sound/soc/soc-dapm.c:149:2: warning: function 'pop_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 14:15:18 +00:00
Peter Seiderer
674f9abd09
tlv320aic32x4: delay i2c access by 1 ms after hardware reset
As stated in 'TLV320AIC3254 Application Reference Guide' ([1]):

  3.2 Device Startup Lockout Times
    After the TLV320AIC3254 initializes through hardware reset at power-up
    or software reset, the internal registers initialize to default values.
    This initialization takes place within 1ms after pulling the RESET
    signal high. During this initialization phase, no register-read or
    register-write operation should be performed on ADC or DAC coefficient
    buffers. Also, no block within the codec should be powered up during
    the initialization phase.

[1] http://www.ti.com/lit/an/slaa408a/slaa408a.pdf

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 14:15:00 +00:00