[Buildroot] [git commit] DEVELOPERS: drop odroidc2 from Dagg Stompler

[Romain Naour]

Hi Dagg,

Le 11/08/2019 à 19:14, daggs a écrit :
> Greetings Romain,
> 
>> Sent: Saturday, August 10, 2019 at 11:56 PM
>> From: "Romain Naour" <romain.naour at gmail.com>
>> To: daggs <daggs at gmx.com>
>> Cc: "Bernd Kuhls" <bernd.kuhls at t-online.de>, buildroot at uclibc.org
>> Subject: Re: [Buildroot] [git commit] DEVELOPERS: drop odroidc2 from Dagg Stompler
>>
>> Hi Daggs,
>>
>> Le 10/08/2019 à 22:40, daggs a écrit :
>>> Greetings Naour,
>>>
>>>> Sent: Saturday, August 10, 2019 at 11:19 PM
>>>> From: "Romain Naour" <romain.naour at gmail.com>
>>>> To: daggs <daggs at gmx.com>, "Bernd Kuhls" <bernd.kuhls at t-online.de>
>>>> Cc: buildroot at uclibc.org
>>>> Subject: Re: [Buildroot] [git commit] DEVELOPERS: drop odroidc2 from Dagg Stompler
>>>>
>>>> Hi Daggs,
>>>>
>>>> Le 10/08/2019 à 20:31, daggs a écrit :
>>>>> Greetings,
>>>>>
>>>>>> Sent: Saturday, August 10, 2019 at 2:08 PM
>>>>>> From: "Bernd Kuhls" <bernd.kuhls at t-online.de>
>>>>>> To: buildroot at uclibc.org
>>>>>> Subject: Re: [Buildroot] [git commit] DEVELOPERS: drop odroidc2 from Dagg Stompler
>>>>>>
>>>>>> Am Sat, 10 Aug 2019 07:50:08 +0200 schrieb daggs:
>>>>>>
>>>>>>> Greetings,
>>>>>>>
>>>>>>>> Am Fri, 09 Aug 2019 14:37:48 +0200 schrieb Romain Naour:
>>>>>>>>
>>>>>>>>> So up to BR2_PACKAGE_KODI_PLATFORM_SUPPORTS_AML is related to the
>>>>>>>>> odroidc2 board (from the Buildroot packaging point of view) and
>>>>>>>>> should be removed too.
>>>>>>>>>
>>>>>>>>> Maybe KODI AML support can be used on other AML based board?
>>>>>>>
>>>>>>> as the board was dropped from the support list, I see no reason to keep
>>>>>>> this. in addition, I think that this board is fully supported without
>>>>>>> the need for external libs.
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> sent http://patchwork.ozlabs.org/project/buildroot/list/?series=124369
>>>>>>
>>>>>> Kodi v19 will remove specific aml support as well:
>>>>>> https://github.com/xbmc/xbmc/pull/16043#issuecomment-489331416
>>>>>> and encourages users to switch to gbm support:
>>>>>> https://github.com/xbmc/xbmc/pull/16043#issuecomment-498054447
>>>>>>
>>>>>> Libreelec switched amlogic support to mainline kernel as well:
>>>>>> https://github.com/LibreELEC/LibreELEC.tv/pull/3536
>>>>>> https://github.com/xbmc/xbmc/pull/16043#issuecomment-498180789
>>>>>>
>>>>>> In the end there is no reason for us to keep the old amlogic stuff alive.
>>>>>>
>>>>>> Regards, bernd
>>>>>
>>>>> so if I build buildroot with latest kernel and kodi, it should work ok? e.g. hw decoding and stuff?
>>>>
>>>> GPU Mali 450 support has been upstreamed recently in the kernel 5.2.x and mesa3d
>>>> 19.1. You need to enable the support for the Lima DRM in the kernel and Gallium
>>>> Lima driver in mesa3d.
>>>>
>>>> You probably need to apply this series and a patch to add the Gallium Lima
>>>> driver in mesa3d.
>>>> http://patchwork.ozlabs.org/project/buildroot/list/?series=123227
>>>>
>>>> But I can't say for kodi...
>>>>
>>>> Best regards,
>>>> Romain
>>>>
>>>
>>> it is good to know, I'd assume that if a proper kernel and mesa support is in place, kodi will surly work, I only hope hw decoding is supported too.
>>> unfortunately, that doesn't increase the likelihood of the board reinstated into buildroot. not until agreed flow when it comes to the board's ATF will exist.
>>
>> I'm using a board Le Potato
>> (https://libre.computer/products/boards/aml-s905x-cc) based on AML-S905X-CC.
>> Like for the Odroid-C2, Amlogic doesn't provide sources for the firmware and for
>> tools needed to create the bootloader image (only binaries are available).
>>
>> But an opensource tool has been made by reverse engineering:
>>
>> https://github.com/repk/gxlimg
>>
>> Maybe you can take a look at this tool and see if it can work for your board?
>>
>> Best regards,
>> Romain
>>
>>>
>>> Dagg.
>>>
>>
>>
> 
> I've looked into the repo a bit, first, the c2 is s905, not s905x. I'd imagine that matters.
> moreover, I've looked into the readme on how to build it, it looks the same like the vendor's flow, one still need to get bins from somewhere and compile two pkgs.
> I don't see how this changes the issue I'm facing?

I just found a recent blog post about odroidc2 built with Yocto using uboot
2019.01 and kernel 4.19:

https://jumpnowtek.com/odroid/Odroid-C2-Systems-with-Yocto.html

I haven't looked into all the details, but I guess if we can build and boot a
system built with Yocto we should be able to do the same with Buildroot.

For the hardware video acceleration, you can try with a Linux kernel 5.2 with
the lima driver and mesa3d 19.1.

I hope this help.

Best regards,
Romain

> 
> Dagg.
>