[alsa-devel] [PATCH] ASoC: tfa9879: Add device tree bindings

[Łukasz Majewski]

On 09/20/2017 12:59 AM, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam at nxp.com>
> 
> Even though the tfa9879 driver can probe via device tree trough the
> I2C core code, it is preferable to have explicit device tree
> bindings instead [1], so add this support.
> 
> [1] https://www.spinics.net/lists/devicetree/msg195176.html
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
> ---
> Hi Lukasz,
> 
> Could you please test this on your hardware?
> 
>   .../devicetree/bindings/sound/tfa9879.txt          | 23 ++++++++++++++++++++++
>   sound/soc/codecs/tfa9879.c                         |  6 ++++++
>   2 files changed, 29 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/sound/tfa9879.txt
> 
> diff --git a/Documentation/devicetree/bindings/sound/tfa9879.txt b/Documentation/devicetree/bindings/sound/tfa9879.txt
> new file mode 100644
> index 0000000..731ffe8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/tfa9879.txt
> @@ -0,0 +1,23 @@
> +NXP TFA9879 class-D audio amplifier
> +
> +Required properties:
> +
> +- compatible : "nxp,tfa9879"
> +
> +- reg : the I2C address of the device
> +
> +Example:
> +
> +&i2c1 {
> +	clock-frequency = <100000>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_i2c1>;
> +	status = "okay";
> +
> +	codec: tfa9879 at 6c {
> +		#sound-dai-cells = <0>;
> +		compatible = "nxp,tfa9879";
> +		reg = <0x6c>;
> +        };
> +};
> +
> diff --git a/sound/soc/codecs/tfa9879.c b/sound/soc/codecs/tfa9879.c
> index 95e0a7a..f8dd67c 100644
> --- a/sound/soc/codecs/tfa9879.c
> +++ b/sound/soc/codecs/tfa9879.c
> @@ -312,9 +312,15 @@ static const struct i2c_device_id tfa9879_i2c_id[] = {
>   };
>   MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
>   
> +static const struct of_device_id tfa9879_of_match[] = {
> +	{ .compatible = "nxp,tfa9879", },
> +	{ }
> +};
> +
>   static struct i2c_driver tfa9879_i2c_driver = {
>   	.driver = {
>   		.name = "tfa9879",
> +		.of_match_table = tfa9879_of_match,
>   	},
>   	.probe = tfa9879_i2c_probe,
>   	.remove = tfa9879_i2c_remove,
> 

Reviewed-by: Łukasz Majewski <lukma at denx.de>

-- 
Best regards,

Lukasz Majewski

--

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