ath11k: QCA6390 support on Linux

[Kalle Valo]

Kalle Valo <kvalo at codeaurora.org> writes:

> some of the Dell XPS 15 9500 models have QCA6390 Wi-Fi 6 device. ath11k
> will be the driver to support QCA6390 and the plan is that Linux v5.10
> (most likely released end of December) will be the first release to
> support it.
>
> But as everything is not ready yet I recommend people to test
> ath11k-qca6390-bringup branch, and specifically tag
> ath11k-qca6390-bringup-202008181507. Below are instructions how to
> install kernel and firmware.
>
> Do note that this is still experimental, there will be bugs but at least
> it should be possible to connect to an AP and have connectivity.
>
> Please send all questions, comments and bug reports to
> ath11k at lists.infradead.org list. I do not have time to reply to private
> email. I have Bcced people who have contacted me privately.

Some updates:

* QCA6390 support is now in v5.10-rc2

* pull request to linux-firmware sent, not yet pulled

* board-2.bin should be now used instead of board.bin

* there was some reorganisation in ath11k-firmware

Here are updated instructions on how to test ath11k:

# clone kernel
git clone -b v5.10-rc2 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

# clone firmware
git clone https://github.com/kvalo/ath11k-firmware.git

# Ensure below options are selected in the kernel
cd linux
make menuconfig
--> Select Device drivers
	--> Network device support
		--> Wireless LAN
			--> Enable as below
				<M> Qualcomm Technologies 11ax chipset support
				<M>       Atheros ath11k PCI support
				[*]       QCA ath11k debugging
				[*]       QCA ath11k debugfs support
				[*]       ath11k tracing support
				[*]     QCA ath11k spectral scan support

# Build and install the kernel and kernel modules

# Install firmware
cd ../ath11k-firmware
sudo mkdir -p /lib/firmware/ath11k/QCA6390/hw2.0/
sudo cp QCA6390/hw2.0/1.0.1/WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1/*.bin /lib/firmware/ath11k/QCA6390/hw2.0/
sudo cp QCA6390/hw2.0/board-2.bin /lib/firmware/ath11k/QCA6390/hw2.0/

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