Bluetooth and WiFi db845 19.09


In 19.09 release Bluetooth and WiFi are not working. is there any development on bt and wifi? What needs to be done to enable bt and wifi?


Both are now finally working in our integration branch, so we’re working on making an incremental release with these enabled.



bluetooth is working in this branch

But the wifi is failing, please suggest

root@linaro-alip:~# lsmod | grep ath
ath10k_snoc 45056 0
root@linaro-alip:~# dmesg | grep wifi
[8.344350] ath10k_snoc 18800000.wifi: Adding to iommu group 5

root@linaro-alip:~# dmesg | grep fail
[ 5.022221] ufshcd-qcom 1d84000.ufshc: ufshcd_variant_hba_init: variant qcom init failed err -517
[ 5.031295] ufshcd-qcom 1d84000.ufshc: Initialization failed
[ 5.037107] ufshcd-qcom 1d84000.ufshc: ufshcd_pltfrm_init() failed -517
[ 6.536752] qcom-pcie: probe of 1c00000.pci failed with error -110
[ 6.676221] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 6.709080] cfg80211: failed to load regulatory.db
[ 8.558437] msm_dpu ae01000.mdp: [drm:msm_ioremap [msm]] ERROR failed to get memory resource: vbif_nrt
[ 8.568025] msm_dpu ae01000.mdp: [drm:msm_ioremap [msm]] ERROR failed to get memory resource: regdma
[ 9.018739] bluetooth hci0: Direct firmware load for qca/crbtfw21.tlv failed with error -2
[ 10.551482] remoteproc remoteproc2: Direct firmware load for qcom/sdm845/mba.mbn failed with error -2
[ 10.551487] remoteproc remoteproc2: request_firmware failed: -2
[ 10.551490] remoteproc remoteproc2: Boot failed: -2


there are user space components required to get WLAN to work, @alimon is working on finalizing them. stay tuned.

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I’m a RB3 user. Thank you for your work to support 845c.

I want to use RB3 wireless LAN quickly.
When will it be usable?

I don’t think there is an ETA, but it’s ongoing. Bluetooth has been enabled in latest release (19.11).

@alimon @ndec

Could you please suggest the changes required in userspace to enable the wifi?



Hi, Unfortunately there is no WiFi support yet in DB845c, We are working with an issue in the firmware file that is required to boot up the device.


Hi, is there wifi support on 5.4.0 kernel yet?

Hi @Rex,

We are working on finalize a new release, the support is already in the kernel but needs a firmware package, you can test the WiFi support using snapshots, [1],
After flash the image,

$ apt update
$ apt install firmware-qcom-sdm845
$ systemctl restart rmtfs


Is it going to be same for the releases after 186?

I’m guessing you are asking for install manually the firmware-qcom-sdm845, so that’s not needed with the latest snapshot. [1].


How about the release 124? Do I have to install the firmware manually?

@ramya Will not work with the current release, we have done some kernel configuration changes + firmware, we plant to make a release after Linux 5.7 is released (now at rc3).

Does the 5.7 kernel release have wifi support?

@PowerRanger Right the WiFi on DB845c is supported on the release 20.07 [1], using this kernel branch based on 5.7. [2]


Yes 5.7kernel 20.07 release WiFi and BT works.



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