Hi, I am using the Olimex USB MOD-WIFI-AR9271 USB dongle on the ARM based board with Linux kernel-4.12.29-yocto-standard. It is based on the AR9271 chip-set and the drive I used which comes along with the main line Kernel i.e. bundled with 4.2 kernel. As it is loading all the required drivers, here is the lsmod output. root@337D66:~# lsmod Module Size Used by ath9k_htc 57344 0 ath9k_common 16384 1 ath9k_htc ath9k_hw 352256 2 ath9k_htc,ath9k_common ath 24576 3 ath9k_htc,ath9k_hw,ath9k_common mac80211 512000 1 ath9k_htc cfg80211 471040 4 ath9k_htc,mac80211,ath,ath9k_common usb_f_ecm 16384 1 g_ether 16384 0 usb_f_rndis 24576 2 g_ether u_ether 20480 3 usb_f_ecm,g_ether,usb_f_rndis libcomposite 45056 3 usb_f_ecm,g_ether,usb_f_rndis configfs 28672 4 usb_f_ecm,usb_f_rndis,libcomposite leds_pca955x 16384 0 ci_hdrc_imx 20480 0 ci_hdrc 49152 1 ci_hdrc_imx ehci_hcd 65536 1 ci_hdrc usbmisc_imx 20480 1 ci_hdrc_imx The dmesg logs are, [ 623.054126] usb 1-1.1: new high-speed USB device number 7 using ci_hdrc [ 623.243317] usb 1-1.1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested [ 623.541841] usb 1-1.1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: 51008 [ 623.794152] ath9k_htc 1-1.1:1.0: ath9k_htc: HTC initialized with 33 credits [ 624.095253] ath9k_htc 1-1.1:1.0: ath9k_htc: FW Version: 1.4 [ 624.100988] ath9k_htc 1-1.1:1.0: FW RMW support: On [ 624.106028] ath: EEPROM regdomain: 0x809c [ 624.106037] ath: EEPROM indicates we should expect a country code [ 624.106537] ath: doing EEPROM country->regdmn map search [ 624.106549] ath: country maps to regdmn code: 0x52 [ 624.106557] ath: Country alpha2 being used: CN [ 624.106564] ath: Regpair used: 0x52 [ 624.131101] ieee80211 phy1: Atheros AR9271 Rev:1 [ 624.513216] usb 1-1.1: ath9k_htc: USB layer deinitialized But it is not creating any wlan0 interfaces. Any pointers to solve this issue will be greatly appreciated. If this is not the right forum to discuss, please excuse me and ignore the email. Regards, Venkat
