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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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