linux-kernel - Re: [PATCH v8 1/2] ASoC: rt5514: Add devicetree bindings for rt5514-spi

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Date:   Wed, 06 Sep 2017 10:42:25 +0800
From:   jeffy <jeffy.chen@...k-chips.com>
To:     Brian Norris <briannorris@...omium.org>
CC:     linux-kernel@...r.kernel.org, dgreid@...omium.org, heiko@...ech.de,
        mka@...omium.org, dianders@...omium.org,
        devicetree@...r.kernel.org, alsa-devel@...a-project.org,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v8 1/2] ASoC: rt5514: Add devicetree bindings for rt5514-spi

Hi Brian,

On 09/06/2017 01:55 AM, Brian Norris wrote:
>> +This device supports SPI only.
>> >+
>> >+Required properties:
>> >+
>> >+- compatible : "realtek,rt5514".
> You list one string here, but there's 2 in the example. The point of
> this exercise was to document (not just in an Example) the strings
> you're using.
Ok, will do.
>
>> >+
>> >+- reg : The SPI address of the device.
>> >+
>> >+Optional properties:
>> >+
>> >+- interrupt-parent: Should be the phandle for the interrupt controller
>> >+- interrupts: The interrupt number to the cpu. The interrupt specifier format
>> >+	      depends on the interrupt controller.
>> >+
>> >+Example:
>> >+
>> >+codec: rt5514-spi@0 {
>> >+	compatible = "realtek,rt5514", "realtek,rt5514-spi";
>> >+	reg = <0>;
>> >+
>> >+        /* May run faster once verified. */
> Really? That was barely useful in the rk3399-gru DTSI, but it's
> definitely not worth sticking in an example.
>
> Also, you switch between tabs and spaces for indentation. Please be
> consistent. (And as with C code, I think the right answer is tabs?)
Oops, thanks for noticing.
>
>> >+        spi-max-frequency = <10000000>;
>> >+
>> >+        pinctrl-names = "default";
>> >+        pinctrl-0 = <&mic_int>;
>> >+
>> >+        interrupt-parent = <&gpio1>;
>> >+        interrupts = <13 IRQ_TYPE_LEVEL_HIGH>;
>> >+        wakeup-source;
>> >+};
>> >diff --git a/Documentation/devicetree/bindings/sound/rt5514.txt b/Documentation/devicetree/bindings/sound/rt5514.txt
>> >index 929ca6756b02..12a8c93a67cc 100644
>> >--- a/Documentation/devicetree/bindings/sound/rt5514.txt
>> >+++ b/Documentation/devicetree/bindings/sound/rt5514.txt
>> >@@ -28,6 +28,6 @@ Pins on the device (for linking into audio routes) for RT5514:
>> >  Example:
>> >
>> >  codec: rt5514@57 {
>> >-	compatible = "realtek,rt5514";
>> >+	compatible = "realtek,rt5514", "realtek,rt5514-i2c";
> Example != Documentation. Please document the string properly.
Ok, will do.
>
> Brian
>