Hi,
I am using the QCA9377 chip on an imx6dl-pico-pi board running kernel
5.10.37 and I noticed that the firmware takes a long time to load
(more than 3 minutes after boot):
[ 192.544227] ath10k_sdio mmc1:0001:1: qca9377 hw1.1 sdio target
0x05020001 chip_id 0x00000000 sub 0000:0000
[ 192.554451] ath10k_sdio mmc1:0001:1: kconfig debug 0 debugfs 0
tracing 0 dfs 0 testmode 0
[ 192.566465] ath10k_sdio mmc1:0001:1: firmware ver
WLAN.TF.1.1.1-00061-QCATFSWPZ-1 api 5 features ignore-otp crc32
7746e551
[ 192.765756] ath10k_sdio mmc1:0001:1: failed to fetch board data for
bus=sdio,vendor=0271,device=0701,subsystem-vendor=0000,subsystem-device=0000
from ath10k/QCA9377/hw1.0/board-2.bin
[ 192.784424] ath10k_sdio mmc1:0001:1: board_file api 1 bmi_id N/A
crc32 544289f7
[ 194.081698] ath10k_sdio mmc1:0001:1: htt-ver 3.32 wmi-op 4 htt-op 3
cal otp max-sta 32 raw 0 hwcrypto 1
[ 194.160101] mmc1: queuing unknown CIS tuple 0x01 (3 bytes)
[ 194.177321] mmc1: queuing unknown CIS tuple 0x1a (5 bytes)
[ 194.187873] mmc1: queuing unknown CIS tuple 0x1b (8 bytes)
[ 194.194279] mmc1: queuing unknown CIS tuple 0x14 (0 bytes)
And then when I try to use it the following RCU messages are seen:
# wpa_supplicant -iwlan0 -c /etc/wpa.conf &
# Successfully initialized wpa_supplicant
[ 234.360447] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.390478] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.409903] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.461811] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.513919] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.566124] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.669870] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.721845] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.773752] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
[ 234.877801] NOHZ tick-stop error: Non-RCU local softirq work is
pending, handler #08!!!
wlan0: CTRL-EVENT-REGDOM-CHANGE init=BEACON_HINT type=UNKNOWN
# wlan0: SME: Trying to authenticate wit[ 239.203438] wlan0:
authenticate with xx:xx:xx:xx:xx:xx
h d4:b9:2f:2a:f8:64 (SSID='FABIOHOUSE' freq=2412 MHz)
[ 239.264154] wlan0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
[ 239.280319] wlan0: authenticated
wlan0: Trying to associate with xx:xx:xx:xx:xx:xx(SSID='FABIOHOUSE'
freq=2412 MHz)
[ 239.296632] wlan0: associate with xx:xx:xx:xx:xx:xx (try 1/3)
[ 239.309133] wlan0: RX AssocResp from xx:xx:xx:xx:xx:xx(capab=0x411
status=0 aid=4)
[ 239.336270] wlan0: associated
wlan0: Associated with xx:xx:xx:xx:xx:xx
wlan0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
wlan0: WPA: Key negotiation completed
[ 239.553262] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
with xx:xx:xx:xx:xx:xx [PTK=CCMP GTK=CCMP]
wlan0: CTRL-EVENT-CONNECTED - Connection to xx:xx:xx:xx:xx:xx
completed [id=0 id_str=]
Despite the two problems reported above the Wifi connection works:
# udhcpc -i wlan0
udhcpc: started, v1.33.0
udhcpc: sending discover
udhcpc: sending select for 192.168.0.19
udhcpc: lease of 192.168.0.19 obtained, lease time 86400
deleting routers
adding dns x.y.z.w
adding dns x.y.z.w
# ping google.com
PING google.com (172.217.29.110): 56 data bytes
64 bytes from a.b.c.d: seq=0 ttl=113 time=27.756 ms
64 bytes from a.b.c.d: seq=1 ttl=113 time=32.397 ms
64 bytes from a.b.c.d: seq=2 ttl=113 time=31.407 ms
64 bytes from a.b.c.d seq=3 ttl=113 time=30.491 ms
Does anyone have any suggestions for fixing these two issues? I have
also tested 5.12.4 with the same results. Using the QCA9377 firmware
from the latest linux-firmware tree.
Thanks,
Fabio Estevam
On Tue, May 25, 2021 at 9:40 PM Fabio Estevam <[email protected]> wrote:
>
> Hi,
>
> I am using the QCA9377 chip on an imx6dl-pico-pi board running kernel
> 5.10.37 and I noticed that the firmware takes a long time to load
> (more than 3 minutes after boot):
Ok, I replaced eudev with mdev in Buildroot and now it loads the
QCA9377 firmware quickly.
> # wpa_supplicant -iwlan0 -c /etc/wpa.conf &
> # Successfully initialized wpa_supplicant
> [ 234.360447] NOHZ tick-stop error: Non-RCU local softirq work is
> pending, handler #08!!!
> [ 234.390478] NOHZ tick-stop error: Non-RCU local softirq work is
> pending, handler #08!!!
These NOHZ messages still pop up.
Cheers