Messages in this thread | | | Date | Mon, 30 Jun 2014 18:21:15 +0100 | From | Mark Rutland <> | Subject | Re: [PATCH v2] ASoC: tas2552: Support TI TAS2552 Amplifier |
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Hi,
On Mon, Jun 30, 2014 at 06:10:59PM +0100, Dan Murphy wrote: > Support the TI TAS2552 Class D amplifier. > > The TAS2552 is a high efficiency Class-D audio > power amplifier with advanced battery current > management and an integrated Class-G boost > The device constantly measures the > current and voltage across the load and provides a > digital stream of this information. > > Signed-off-by: Dan Murphy <dmurphy@ti.com> > --- > > v2 - Address RFC comments- Added regmap, and snd_soc calls > removed debug code, address checkpatch errors -https://patchwork.kernel.org/patch/4378281/ > > .../devicetree/bindings/sound/tas2552.txt | 22 + > include/sound/tas2552-plat.h | 25 ++ > sound/soc/codecs/Kconfig | 5 + > sound/soc/codecs/Makefile | 2 + > sound/soc/codecs/tas2552.c | 462 ++++++++++++++++++++ > sound/soc/codecs/tas2552.h | 75 ++++ > 6 files changed, 591 insertions(+) > create mode 100644 Documentation/devicetree/bindings/sound/tas2552.txt > create mode 100644 include/sound/tas2552-plat.h > create mode 100644 sound/soc/codecs/tas2552.c > create mode 100644 sound/soc/codecs/tas2552.h > > diff --git a/Documentation/devicetree/bindings/sound/tas2552.txt b/Documentation/devicetree/bindings/sound/tas2552.txt > new file mode 100644 > index 0000000..58e931b > --- /dev/null > +++ b/Documentation/devicetree/bindings/sound/tas2552.txt > @@ -0,0 +1,22 @@ > +Texas Instruments - tas2552 Codec module > + > +The tas2552 serial control bus communicates through I2C protocols > + > +Required properties: > + > +- compatible - "string" - One of: > + "ti,tas2552" - TAS2552
Drop the "string". The compatible list is a standard property and its type (string list) is well-known.
You could change "One of:" to "should contain:", which will look less weird with a single entry.
> +- reg - <int> - I2C slave address
Similarly to "string" we can get rid of <int> here. i2c addresses are well-known to be described in a single u32 cell.
> + > +Optional properties: > + > +- power-gpio - gpio pin to enable/disable the device
The code below seems to look for "enable-gpio". Searching for "power-gpio" only hits in the line above and the example below. I assume the code is in error?
> + > +Example: > + > +tas2552: tas2552@41 { > + compatible = "ti,tas2552"; > + reg = <0x41>; > + power-gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>; > +};
[...]
> + if (pdata) { > + data->power_gpio = pdata->power_gpio; > + } else if (np) { > + data->power_gpio = of_get_named_gpio(np, "enable-gpio", 0);
Usually I see this logic the other way around, looking for DT data first then falling back to platform data if no DT information was present.
Cheers, Mark.
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