mt7615: Fail to load firmware on AZWAVE-CB434NF module

From: Chris Chiu
Date: Tue Sep 08 2020 - 15:40:26 EST


Hi Sean, Ryder,
We have an ASUS laptop X532EQ with the wifi module AZWAVE-CB434NF
which fails to bring up the wifi interface on kernel 5.9.0-rc1. The
dmesg shows the firmware load error.

[ 25.630850] mt7615e 0000:2d:00.0: Message -4294967280 (seq 1) timeout
[ 25.630851] mt7615e 0000:2d:00.0: Failed to get patch semaphore
[ 25.630853] mt7615e 0000:2d:00.0: mediatek/mt7663pr2h.bin not
found, switching to mediatek/mt7663pr2h_rebb.bin
[ 46.111154] mt7615e 0000:2d:00.0: Message -4294967280 (seq 2) timeout
[ 46.111178] mt7615e 0000:2d:00.0: Failed to get patch semaphore
[ 46.111179] mt7615e 0000:2d:00.0: failed to load mediatek/mt7663pr2h_rebb.bin

The lspci information for the device shows as follows
0000:2d:00.0 Network controller [0280]: MEDIATEK Corp. Device [14c3:7663]
Subsystem: AzureWave Device [1a3b:4341]
Flags: bus master, fast devsel, latency 0, IRQ 177
Memory at 6032100000 (64-bit, prefetchable) [size=1M]
Memory at 6032200000 (64-bit, prefetchable) [size=16K]
Memory at 6032204000 (64-bit, prefetchable) [size=4K]
Capabilities: [80] Express Endpoint, MSI 1f
Capabilities: [e0] MSI: Enable+ Count=1/32 Maskable+ 64bit+
Capabilities: [f8] Power Management version 3
Capabilities: [100] Vendor Specific Information: ID=1556 Rev=1
Len=008 <?>
Capabilities: [108] Latency Tolerance Reporting
Capabilities: [110] L1 PM Substates
Capabilities: [200] Advanced Error Reporting
Kernel driver in use: mt7615e
Kernel modules: mt7615e

I also tried the latest linux-firmware with the most up to date
mediatek firmware
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=7a237c6ee2c7af48723c356461ef80270a52d2c6.
But still get the same error.

Any suggestions on what I can do here?

Chris