On 25.06.19 23:42, Peter Robinson wrote:
>>>>> Good day,
>>>>> will Fedora 30 support Raspberry Pi 4, or we must wait to Fedora 31?
>>>> a short statement from myself as the BCM2835 maintainer. The sources has
>>>> been published yesterday. The BCM2835 feature window for Linux 5.3 is
>>>> closed since 3 weeks. So the first kernel with minimal RPi 4 support
>>>> could be 5.4.
>>> Where is the upstream branches for 5.4 been published, from when I
>>> pulled from the raspberrypi github sources late last night I didn't
>>> see anything specific to the rpi4 I could see in any of the branches.
>> as far as i know there isn't any upstream branch. Some of the RPi 4
>> stuff has been prepared for upstream (usually BCM2711 = downstream,
>> BCM2838 = upstream), but are buried in the rpi-4.19 branch.
>>
>> Looks at this for example:
>>
>> https://github.com/raspberrypi/linux/commits?author=pelwell
>>
>> But there are also lot of hacks. Currently the biggest part on Kernel
>> side is the PCIe driver which isn't upstreamed yet. Another problem is
>> that there is no U-Boot support yet.
> I figured as much, I had looked at the 4.19.y branch as I figured
> that's where the initial bits would be but I hadn't seen anything that
> stood out :-/
>
> I was looking through the DT compatible strings from
> bcm2711-rpi-4-b.dtb and worked out the issues with the PCIe issue, I
> figured there was either a new driver or enablement to one of the
> other broadcom drivers, most of the rest looked like fairly generic
> Arm IP or exisiting broadcom bits so my guess would there would be DT
> plus probably some enablement bits for the new SoC to find.
I will start to prepare an initial RFC series in the near future. But
it's summer, so don't expect anything too soon.
>
>> Without a real datasheet with register documentation this isn't fun ...
> For you or the wider community?
For all
>
> Peter
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