[alsa-devel] [PATCH] ASoC: ssm2305: Add amplifier driver

[Philipp Zabel]

On Thu, 2018-05-17 at 11:22 +0200, Marco Felsch wrote:
> The ssm2305 is a simple Class-D audio amplifier. A application can
> turn on/off the device by a gpio. It's also possible to hardwire the
> shutdown pin.
> 
> Tested on a i.MX6 based custom board.
> 
> Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
> ---
>  .../devicetree/bindings/sound/adi,ssm2305.txt |  15 +++
>  sound/soc/codecs/Kconfig                      |   7 ++
>  sound/soc/codecs/Makefile                     |   2 +
>  sound/soc/codecs/ssm2305.c                    | 105 ++++++++++++++++++
>  4 files changed, 129 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/adi,ssm2305.txt
>  create mode 100644 sound/soc/codecs/ssm2305.c
> 
> diff --git a/Documentation/devicetree/bindings/sound/adi,ssm2305.txt b/Documentation/devicetree/bindings/sound/adi,ssm2305.txt
> new file mode 100644
> index 000000000000..fc4c99225538
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/adi,ssm2305.txt
> @@ -0,0 +1,15 @@
> +Analog Devices SSM2305 Speaker Amplifier
> +========================================
> +
> +Required properties:
> +  - compatible : "adi,ssm2305"
> +
> +Optional properties:
> +  - ssm2305,shutdown-gpio : the gpio connected to the shutdown pin

This should be called shutdown-gpios (plural, no vendor prefix) for
consistency. Also, since the shutdown GPIO on SSM2305 is active low,
this should be documented here.

regards
Philipp