On 14.08.19 14:07, Peter Robinson wrote:
Firstly thanks for your work here.
>>>> 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
>>>> 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
>>> 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.
> Just a short update: it will be a bumpy road :-(
> The good news first: sdhci (incl. clk changes) and pinctrl are ready.
> But there is hassle with DMA especially with current Linux 5.3 rc. So in
> case the initial series land for Linux 5.4, there will be only debug
> UART and no graphics support. Also i'm currently not sure arm64 support
> will be ready.
Is there a tracking ticket for the changes that need to be made,
BCM2711 / Raspberry Pi 4 support is too complex for a single ticket. I
decided to start with inital support (without GENET, thermal, HWRNG, USB
3.0, 40 bit DMA, V3D) and handle the advanced topics separate. But yes
there is a ticket for the initial support:
I noticed you posted a v2 series this morning. Is the
aarch64 issue the one with the dma32 problems or is there other issues
Unfortunately they are completely different. Nicolas Saenz Julienne will
take care of them.
The good news: sdhci (without clock) and pinctrl changes has been merged
for Linux 5.4.
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