linux-kernel - Re: [EXTERNAL] Re: [PATCH v2 2/5] ASoC: dt-bindings: Add tas2781 amplifier

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Date:   Thu, 11 May 2023 16:48:32 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Ding, Shenghao" <shenghao-ding@...com>,
        Mark Brown <broonie@...nel.org>
Cc:     Shenghao Ding <13916275206@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "pierre-louis.bossart@...ux.intel.com" 
        <pierre-louis.bossart@...ux.intel.com>,
        "Lu, Kevin" <kevin-lu@...com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Xu, Baojun" <x1077012@...com>, "Gupta, Peeyush" <peeyush@...com>,
        "Navada Kanyana, Mukund" <navada@...com>,
        "gentuser@...il.com" <gentuser@...il.com>,
        "Ryan_Chu@...tron.com" <Ryan_Chu@...tron.com>,
        "Sam_Wu@...tron.com" <Sam_Wu@...tron.com>
Subject: Re: [EXTERNAL] Re: [PATCH v2 2/5] ASoC: dt-bindings: Add tas2781
 amplifier

On 11/05/2023 15:19, Ding, Shenghao wrote:
> 
> On 11/05/2023 07:49, Mark Brown wrote:
>>> Missing minItems, but...
>>
>>>> +    items:
>>>> +      minimum: 0x38
>>>> +      maximum: 0x3f
>>
>>> ... So these are fixed? No need to encode them in such case...
>>
>> I'm not sure I understand your concern here, there's up to 4 possible 
>> values from 0x38-0x3f which has more than 4 possible values.
> 
> Aren't the addresses going to be incremented by one (up to 8 of devices in total)?

With your style of replies, it looks like you wrote it...

> 
> No, the i2c address order is not always monotonic increase or decrease, sometime it would be disorder, according to the application.
> Each device would have eight possible i2c address, the final address depends on the hardware connections.

OK, the question about the broadcast is still there - cannot it be deduced?

Best regards,
Krzysztof