[PATCH v2 1/2] arm64: dts: broadcom: clear the warnings caused by empty dma-ranges

[Florian Fainelli]

On 1/13/21 12:05 AM, Arnd Bergmann wrote:
> On Wed, Jan 13, 2021 at 4:42 AM Bharat Gooty <bharat.gooty at broadcom.com> wrote:
>>
>> Hello Ray,
>>
>> I had cross checked with Design and integration team.
>> Yes we can set the "dma-rages" to 40 bit DMA ranges. Tested, it is working.
>>
>> -----Original Message-----
>> From: Ray Jui <ray.jui at broadcom.com>
>>
>> Bharat can correct me if I'm wrong, but I don't think we have a bug in
>> the USB DMA engine that causes it can only address 32-bit. I believe we
>> can set dma-ranges size to 40-bit here.
>>
>> The dma-range property is though required to be specified, instead of
>> leaving it as empty, with the use of IOMMU. That seems to be a v5.10
>> specific behavior as I described below.
> 
> Ok, thanks for double-checking. I had misremembered the version
> that actually went into the as the one that used 64-bit dma-ranges
> and thought that was what broke, rather than the version without
> dma-ranges.
> 
> If any of you want to send me that bugfix directly, or have Florian
> pick it up through his fixes branch, I'll make sure we get it into v5.11.

I have another change for v5.11 that I would like to send, so please do
send a bugfix when you get a chance and we can lump those two changes
together, say, by the end of the week?
-- 
Florian