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SubjectRe: [PATCH] ASoC: codecs: Add support for AK4458 DAC driver
On Wed, Jan 31, 2018 at 03:20:09PM +0200, Cosmin-Gabriel Samoila wrote:
> The AK4458 is a 32-bit 8ch Premium DAC that corresponds
> to a 768kHz PCM input and an 11.2MHz DSD input at maximum.
> It supports I2S, DSD and TDM modes with 24 or 32 bit MSB
> or 16, 24, 32 LSB formats. Its datasheet is available here:
> https://www.akm.com/akm/en/file/datasheet/AK4458VN.pdf
>
> Signed-off-by: Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>
> Signed-off-by: Mihai Serban <mihai.serban@nxp.com>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
> Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
> ---
> Documentation/devicetree/bindings/sound/ak4458.txt | 23 +

Separate patch please.

> sound/soc/codecs/Kconfig | 18 +
> sound/soc/codecs/Makefile | 6 +
> sound/soc/codecs/ak4458-i2c.c | 79 ++
> sound/soc/codecs/ak4458-spi.c | 61 ++
> sound/soc/codecs/ak4458.c | 1132 ++++++++++++++++++++
> sound/soc/codecs/ak4458.h | 127 +++
> 7 files changed, 1446 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/ak4458.txt
> create mode 100644 sound/soc/codecs/ak4458-i2c.c
> create mode 100644 sound/soc/codecs/ak4458-spi.c
> create mode 100644 sound/soc/codecs/ak4458.c
> create mode 100644 sound/soc/codecs/ak4458.h
>
> diff --git a/Documentation/devicetree/bindings/sound/ak4458.txt b/Documentation/devicetree/bindings/sound/ak4458.txt
> new file mode 100644
> index 0000000..b9e6eb3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/ak4458.txt
> @@ -0,0 +1,23 @@
> +AK4458 audio DAC
> +
> +This device supports both I2C and SPI modes.
> +
> +Required properties:
> +
> +- compatible : "asahi-kasei,ak4458"
> +- reg : The I2C address of the device for I2C, the chip select number for SPI.
> +- asahi-kasei,pdn-gpios: A GPIO specifier for the GPIO controlling
> + the power down & reset pin.

reset-gpios like the Asahi Kasei ADC under review.

> +- asahi-kasei,mute-gpios: A GPIO specifier for the GPIO controlling
> + the soft mute pin.

State the active state.

> +
> +Example:
> +
> +&i2c {
> + ak4458: ak4458@10 {

dac@10

> + compatible = "asahi-kasei,ak4458";
> + reg = <0x10>;
> + asahi-kasei,pdn-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>
> + asahi-kasei,mute-gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>
> + };
> +};

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