linux-kernel - Re: [PATCH] tas2770: add tas2770 smart PA dt bindings

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Message-ID: <76759c2c-3f5d-5cf6-fc2b-feb1dc8c0e6a@ti.com>
Date:   Tue, 10 Sep 2019 08:21:25 -0500
From:   Dan Murphy <dmurphy@...com>
To:     <shifu0704@...ndersoft.com>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>,
        <linux-kernel@...r.kernel.org>, <alsa-devel@...a-project.org>
CC:     <navada@...com>
Subject: Re: [PATCH] tas2770: add tas2770 smart PA dt bindings

Shi

On 9/6/19 2:06 AM, shifu0704@...ndersoft.com wrote:
> From: Frank Shi <shifu0704@...ndersoft.com>

Subject should be

dt-bindings: ASoC: Add tas2770 smart PA dt bindings

Also Please add Rob Herring <robh+dt@...nel.org> for review

> add tas2770 smart PA dt bindings
>
> Signed-off-by: Frank Shi <shifu0704@...ndersoft.com>
> ---
>   Documentation/devicetree/bindings/tas2770.txt | 38 +++++++++++++++++++++++++++
>   1 file changed, 38 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/tas2770.txt
>
> diff --git a/Documentation/devicetree/bindings/tas2770.txt b/Documentation/devicetree/bindings/tas2770.txt
> new file mode 100644
> index 0000000..f70b310
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/tas2770.txt
> @@ -0,0 +1,38 @@
> +Texas Instruments TAS2770 Smart PA
> +
> +The TAS2770 is a mono, digital input Class-D audio amplifier optimized for
> +efficiently driving high peak power into small loudspeakers.
> +Integrated speaker voltage and current sense provides for
> +real time monitoring of loudspeaker behavior.
> +
> +Required properties:
> +
> + - compatible:	   - Should contain "ti,tas2770".
> + - reg:		       - The i2c address. Should contain <0x4c>, <0x4d>,<0x4e>, or <0x4f>.
s/should/may
> + - #address-cells  - Should be <1>.
> + - #size-cells     - Should be <0>.
> + - ti,asi-format:  - Sets TDM RX capture edge. 0->Rising; 1->Falling.
> + - ti,left-slot:   - Sets TDM RX left time slots.
> + - ti,right-slot:  - Sets TDM RX right time slots.
> + - ti,imon-slot-no:- TDM TX current sense time slot.
> + - ti,vmon-slot-no:- TDM TX voltage sense time slot.
> +
> +Optional properties:
> +
> + - reset-gpio:	Reset GPIO number of left device.
> + - irq-gpio:  IRQ GPIO number of left device.

You might want to use

- interrupt-parent: the phandle to the interrupt controller which provides
                     the interrupt.
- interrupts: interrupt specification for data-ready.

Instead of irq-gpio

> +
> +Examples:
> +
> +    tas2770@4c {
> +                compatible = "ti,tas2770";
> +                reg = <0x4c>;

Missing

#address-cells = <1>;

#size-cells = <0>;

> +                reset-gpio = <&gpio15 1 GPIO_ACTIVE_LOW>;
> +                irq-gpio = <&gpio16 1 GPIO_ACTIVE_LOW>;
> +                ti,asi-format = <0>;
> +                ti,left-slot = <0>;
> +                ti,right-slot = <1>;
> +                ti,imon-slot-no = <0>;
> +                ti,vmon-slot-no = <2>;
> +        };
> +

Suggestion to provide the URL to the data sheet.