QCA9377 hw1.1 SDIO failed to read from address 0x874 etc

[Craig McQueen]

I am trying to set up a Quectel FC900E on a Rockchip RK3328 system using Yocto kirkstone or scarthgap.

The FC900E connects to SDIO. I have done configuration of the device tree. When I boot it, I see:

[    2.650793] ath10k_sdio mmc1:0001:1: qca9377 hw1.1 sdio target 0x05020001 chip_id 0x00000000 sub 0000:0000
[    2.651689] ath10k_sdio mmc1:0001:1: kconfig debug 1 debugfs 1 tracing 0 dfs 0 testmode 0
[    2.653382] ath10k_sdio mmc1:0001:1: firmware ver WLAN.TF.1.1.1-00061-QCATFSWPZ-1 api 5 features ignore-otp crc32 7746e551
[    2.816274] 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
[    2.819785] ath10k_sdio mmc1:0001:1: board_file api 1 bmi_id N/A crc32 544289f7
[    6.538676] ath10k_sdio mmc1:0001:1: htt-ver 3.32 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[    6.875686] ath10k_sdio mmc1:0001:1: failed to read from address 0x874: -110
[    6.876506] ath10k_sdio mmc1:0001:1: failed to read from mbox window data address: -110
[    6.876732] ath10k_sdio mmc1:0001:1: failed to read from address 0x868: -110
[    6.877234] ath10k_sdio mmc1:0001:1: failed to read calibration data: -110
[    6.877877] ath10k_sdio mmc1:0001:1: failed to read fifo/chip control register: -110
[    7.517279] ath10k_sdio mmc1:0001:1: failed to write to address 0x1c7e8: -16
[    7.517963] ath10k_sdio mmc1:0001:1: failed to write skb to 0x1c7e8 asynchronously: -16
[    7.908301] ath10k_sdio mmc1:0001:1: suspend timed out - target pause event never came
[    8.155419] ath10k_sdio mmc1:0001:1: failed to read from address 0x868: -16
[    8.156081] ath10k_sdio mmc1:0001:1: failed to read fifo/chip control register: -16
[   11.342898] ath: EEPROM regdomain: 0x0
[   11.342938] ath: EEPROM indicates default country code should be used
[   11.342947] ath: doing EEPROM country->regdmn map search
[   11.342959] ath: country maps to regdmn code: 0x3a
[   11.342971] ath: Country alpha2 being used: US
[   11.342982] ath: Regpair used: 0x3a

I have confirmed that the FC900E is being fed a 32 kHz signal on its WLAN_SLP_CLK input.

I saw a previous message from Anthony Needles from August 2022 which sounded almost the same. But there was no resolution for the issue then.

I would appreciate any advice on diagnosing this.

-- 
Craig McQueen