I'm trying to get an Atheros WLAN Chip running on imx7 Sabre board. Chipset is ath9k.
Kernel and root-file system are built by yocto, System startup works fine and wpa_supplicant tries to connect to WLAN.
After getting a WLAN-Connection, this connection is immediatelly disconnected.
After some research i found, that ping is very slow (500-1500ms) and not stable. Furthermore I found, that there are no interrupts for ath9k driver:
305: 0 0 GPCV2 122 Edge PCIe PME, ath9k
On a second board with imx6 with working wlan there are interrupts.
Now my question:
How can I enable interrupts for ath9k driver?
Is this an devicetree configuration problem?
Any configuration options for ath9k kernel driver?
Any other ideas?
Thanks in advance