linux-kernel - Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

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Date:	Fri, 1 Aug 2014 08:22:23 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	<nsekhar@...com>, <robh+dt@...nel.org>
CC:	<devicetree@...r.kernel.org>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<linux@....linux.org.uk>, <pawel.moll@....com>,
	<khilman@...prootsystems.com>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

On 07/31/2014 05:24 PM, Sergei Shtylyov wrote:
> Hello.
> 
> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
> 
>> The board uses aic3106 for audio.
> 
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
>> ---
>>   arch/arm/boot/dts/da850-evm.dts | 14 ++++++++++++++
>>   1 file changed, 14 insertions(+)
> 
>> diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
>> index 09118c72e83f..b9ef2be0b145 100644
>> --- a/arch/arm/boot/dts/da850-evm.dts
>> +++ b/arch/arm/boot/dts/da850-evm.dts
>> @@ -51,6 +51,20 @@
>>               tps: tps@48 {
>>                   reg = <0x48>;
>>               };
>> +            tlv320aic3106: tlv320aic3106@1b {
> 
>    The "reg" property is <0x18>, why the unit-address part of a name is
> different?

True, I have lifted the codec part from other dts file and overlooked the
unit-address.
I will resend the series with this fixed.


> Also, the ePAPR standard [1] says:
> 
> The name of a node should be somewhat generic, reflecting the function of the
> device and not its precise programming model.

True. This is why the node for the audio support is named as 'sound'. For the
components, like in this case I do not see issue to call the audio codec with
it's name.

> 
>> +                #sound-dai-cells = <0>;
>> +                compatible = "ti,tlv320aic3106";
>> +                reg = <0x18>;
>> +                status = "okay";
>> +
>> +                /* Regulators */
>> +                IOVDD-supply = <&vdcdc2_reg>;
>> +                /* Derived from VBAT: Baseboard 3.3V / 1.8V */
>> +                AVDD-supply = <&vbat>;
>> +                DRVDD-supply = <&vbat>;
>> +                DVDD-supply = <&vbat>;
>> +            };
>> +
> 
> [1] http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf

BTW: there's a newer version available:
https://www.power.org/wp-content/uploads/2012/06/Power_ePAPR_APPROVED_v1.1.pdf

> 
> WBR, Sergei
> 


-- 
Péter
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