Ordering Dell XPS 13 9310 to test QCA6390

[wi nk]

On Wed, Jan 13, 2021 at 11:25 AM Kalle Valo <kvalo at codeaurora.org> wrote:
>
> Kalle Valo <kvalo at codeaurora.org> writes:
>
> > Mitchell Nordine <mail at mitchellnordine.com> writes:
> >
> >>> But I have now ordered Dell XPS 13 laptop and I should get it in
> >> three weeks, keeping fingers crossed. That should make things easier
> >> as I can test patches myself.
> >>
> >> Hi Kalle, you may already be aware of this, but I just wanted to make sure!
> >>
> >> Not all Dell XPS 13 9310 laptops come with the AX500 connectivity chip
> >> (the one that uses the QCA6390). It seems that only the models with
> >> 32GB RAM tend to come with the AX500 wifi chip.
> >>
> >> Most models appear to come with the AX1650 which I believe uses a
> >> totally different chip and driver that is already well supported in
> >> Linux.
> >>
> >> It might be worth double-checking the model that you have ordered has the AX500.
> >
> > I had heard about that so I did order the 32 GB RAM model and multiple
> > times specified that I only want AX500. So I'm optimistic that I should
> > get the right chip, but you never know how it goes :)
>
> I got the XPS 13 9310 now and it indeed had AX500. But it also has an
> updated BIOS:
>
> [    0.000000] DMI: Dell Inc. XPS 13 9310/0MRT12, BIOS 1.1.4 11/23/2020
>
> And with that I can get 32 MSI vectors:
>
> [    2.758219] ath11k_pci 0000:56:00.0: WARNING: ath11k PCI support is experimental!
> [    2.758778] ath11k_pci 0000:56:00.0: BAR 0: assigned [mem 0x8c300000-0x8c3fffff 64bit]
> [    2.758797] ath11k_pci 0000:56:00.0: enabling device (0000 -> 0002)
> [    2.759086] ath11k_pci 0000:56:00.0: MSI vectors: 32
> [    3.208447] ath11k_pci 0000:56:00.0: qmi req mem_seg[0] 0x3f000000 3522560 1
> [    3.208449] ath11k_pci 0000:56:00.0: qmi req mem_seg[1] 0x3f500000 884736 4
> [    3.215355] ath11k_pci 0000:56:00.0: chip_id 0x0 chip_family 0xb board_id 0xff soc_id 0xffffffff
> [    3.215358] ath11k_pci 0000:56:00.0: fw_version 0x101c06cc fw_build_timestamp 2020-06-24 19:50 fw_build_id
>
> --
> https://patchwork.kernel.org/project/linux-wireless/list/
>
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
>
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Kalle,

  I did see the updated BIOS from a few weeks ago, but I've been a
little hesitant to update since I wasn't sure what would happen or if
I could downgrade.  So to confirm, the new BIOS is allowing the driver
to obtain all 32 msi vectors removing the need for the single MSI
patching?  Does the MHI / M2 behavior also change to work properly?

Thanks!