onboard wireless on rpi4

[Mike Karels]

On 2020-09-06 10:20, Robert Crowston via freebsd-arm wrote:
> That's interesting: OpenBSD is allowing only the lowest 1 GB of memory for DMA; the documentation I obtained suggests the first 3 GB should be accessible. I am experimenting with this new lower bound.

The ftb has this under soc: dma-ranges = <0xc0000000 0x0 0x0 0x3c000000>;

At one point, I looked up how to decode this.  I thought it specified a 
window in which DMA is not allowed, but I'm not sure now.

         Mike

>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Sunday, 6 September 2020 13:40, Klaus Cucinauomo <maciphone2 at googlemail.com> wrote:
>
>>> Am 06.09.2020 um 06:40 schrieb Warner Losh <imp at bsdimp.com>:
>>>
>>> I thought I read they added the busdma constraints we are missing…
>>>
>>> Warner
>> Yes, for OpenBSD I thought the same , to be a little more specific :
>>
>> https://github.com/openbsd/src/commit/aae395593ca184a639a1c158ceb4b2132d85e7c2
>>
>> https://github.com/openbsd/src/commit/a88d14946aed5dc48e4e700486795c8d171576d0
>>
>> Klaus
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