[AudioI] Rock 4SE audioInjector zero (Matt Flax)

[Tony Henrie]

Turns out the overlay Radxa has in their Debian11 (Bullseye) OS for the Rock4A,B,SE was written for the Radxa3 and is disabled in their current offering. However the overlay for the rpi 7inch touchscreen in their Debian11 OS works on the Radxa4SE. The new kernel uses u-boot for updating the kernel, which I don’t yet have an understanding of, so I don’t yet even know how to activate the overlay to test it. 

Here is the audioinjector overlay, if anybody wants to tinker with it. I’ll be working on it. Open it in a code editor like VSC. I don’t know why VLC keeps attaching to it.

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> On Mar 29, 2023, at 6:00 AM, people-request at lists.audioinjector.net wrote:
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>   1. Re: Rock 4SE audioInjector zero (Matt Flax) (Matt Flax)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 29 Mar 2023 00:06:10 +0000
> From: Matt Flax <matt at audioinjector.net>
> To: Bob Amstadt <bob at looperlative.com>, people at lists.audioinjector.net
> 	<people at lists.audioinjector.net>
> Subject: Re: [AudioI] Rock 4SE audioInjector zero (Matt Flax)
> Message-ID:
> 	<010001872aafb35a-9b9cfbec-d1af-44fd-9ed1-19ab0aab8bbb-000000 at email.amazonses.com>
> 	
> Content-Type: text/plain; charset=UTF-8
> 
> I'm also keen to see the addition of the audio injector cards, links 
> would be appreciated.
> 
> We've had a very positive experience with Radxa SBCs for audio setups. I 
> notice that their latest Rock 5A board breaks out 8 channel capability 
> on their exposed I2S bus via the 40 pin GPIO header.
> 
> Matt
> 
> On 29/3/23 10:35, Bob Amstadt via People wrote:
>> 
>> Please send us links and any additional instructions.? I have a Rock 
>> Pi 4B Plus that I'd like to use.
>> 
>> Thanks,
>> 
>> Bob
>> 
>> On 3/28/23 4:32 PM, Tony Henrie via People wrote:
>>> I just figured out that Radxa has already created an overlay for the 
>>> audioinjector soundcards for their Debian11 OS. Their website is a 
>>> bit fragmented, so I just found it. I?ll give that a try and see if I 
>>> can get both the sound card and the touchscreen working. Then just 
>>> one more major issue to resolve: convince Bluewave Studio to make 
>>> their OpenAuto Pro work on the Radxa4SE, since getting a rpi4 in 
>>> today?s world requires a home equity mortgage. :)
>>> 
>>> I appreciate the responses very much. Thanks.
>>> 
>>>> On Mar 28, 2023, at 11:53 AM, Tony Henrie <tthenrie at yahoo.com> wrote:
>>>> 
>>>> Alsa is already ported to the Rock4SE kernel. I was hoping I could 
>>>> get the audioInjector zero overlay, so I could use it as a starting 
>>>> point to write an overlay for the Rock4SE (and A,B). However, I have 
>>>> no experience with that, so if you were interested in writing one I 
>>>> would be very happy with that! I?m also working on trying to write 
>>>> one for raspberrypi 7-inch touchscreen for the Rock4.
>>>> 
>>>> The OS I am using is dietpi v8.15 from the Radxa website:
>>>> 
>>>> However, with their debianOS distro, they already had an overlay 
>>>> installed for the rpi touchscreen, so I may go back to that. I just 
>>>> don?t care for DKE and that OS is all KDE.
>>>> 
>>>> The website is: https://wiki.radxa.com/Rock4/downloads
>>>> 
>>>> 
>>>>> On Mar 28, 2023, at 6:00 AM, people-request at lists.audioinjector.net 
>>>>> wrote:
>>>>> 
>>>>> Re: Rock 4SE audioInjector zero (Matt Flax)
>>>> 
>>> 
>>> 
>> 
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