On Tue, Feb 19, 2019 at 8:12 AM Bogdan Togorean bogdan.togorean@gmail.com wrote:

Add MICBIAS property to the optional devicetree bindings.

Signed-off-by: Bogdan Togorean bogdan.togorean@gmail.com

Documentation/devicetree/bindings/sound/adi,adau1977.txt | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/adi,adau1977.txt b/Documentation/devicetree/bindings/sound/adi,adau1977.txt index e79aeef73f28..87c16e6f2e7c 100644 --- a/Documentation/devicetree/bindings/sound/adi,adau1977.txt +++ b/Documentation/devicetree/bindings/sound/adi,adau1977.txt @@ -23,6 +23,12 @@ Optional properties:

• DVDD-supply: supply voltage for the digital core, please consult Documentation/devicetree/bindings/regulator/regulator.txt

+- adi,micbias: configures the voltage setting for the MICBIAS pin.

•           Select 0/1/2/3/4/5/6/7/8 to specify MICBIAS voltage
  

•           5V/5.5V/6V/6.5V/7V/7.5V/8V/8.5V/9V
  

•           If not specified the default value will be "7" meaning 8.5 Volts.
  

•           This property is only valid for the ADAU1977
  

There's no shortage of mic bias properties for codecs. We should define a common property for this.

But looks like this is already applied, so what's one more...

Rob

The patch

ASoC: adau1977: Add support for setting MICBIAS via DT

has been applied to the asoc tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

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Thanks, Mark

From 65d257ee12860340947bbc336243b4a9a5d721df Mon Sep 17 00:00:00 2001

From: Bogdan Togorean bogdan.togorean@gmail.com Date: Tue, 19 Feb 2019 16:11:39 +0200 Subject: [PATCH] ASoC: adau1977: Add support for setting MICBIAS via DT

If platform_data is NULL add reading of optional adi,micbias property from DT. If adi,micbias is not set keep the default value for micbias.

Signed-off-by: Bogdan Togorean bogdan.togorean@gmail.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/adau1977.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/sound/soc/codecs/adau1977.c b/sound/soc/codecs/adau1977.c index 116af6a9ce3b..11c53bcb71dd 100644 --- a/sound/soc/codecs/adau1977.c +++ b/sound/soc/codecs/adau1977.c @@ -885,13 +885,15 @@ static int adau1977_setup_micbias(struct adau1977 *adau1977) struct adau1977_platform_data *pdata = adau1977->dev->platform_data; unsigned int micbias;

- if (pdata) { + if (pdata) micbias = pdata->micbias; - if (micbias > ADAU1977_MICBIAS_9V0) - return -EINVAL; - - } else { + else if (device_property_read_u32(adau1977->dev, "adi,micbias", + &micbias)) micbias = ADAU1977_MICBIAS_8V5; + + if (micbias > ADAU1977_MICBIAS_9V0) { + dev_err(adau1977->dev, "Invalid value for 'adi,micbias'\n"); + return -EINVAL; }

return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MICBIAS,