I've been using meson-gxm-q200.dtb and not noticed it wasnt working cuz I had ethernet in the living room, let me just try a cheeky fresh sd install just to check but no wifi so far
edit: nope still no wifi on a fresh install, can confirm legacy coreelec wifi works just tried a fresh sd. is there a way I can tweak the dtb or something?
just did a check and I think its actually a BCM4334
CoreELEC:~ # udevadm info /sys/bus/sdio/devices/sdio*
P: /devices/http://d0070000.sdio/mmc_host/sdio/sdio:0001/sdio:0001:1
L: 0
E: DEVPATH=/devices/http://d0070000.sdio/mmc_host/sdio/sdio:0001/sdio:0001:1
E: DRIVER=bcmsdh_sdmmc
E: SDIO_CLASS=00
E: SDIO_ID=02D0:4334
E: MODALIAS=sdio:c00v02D0d4334
E: SUBSYSTEM=sdio
E: USEC_INITIALIZED=10479292
E: SYSTEMD_WANTS=brcmfmac_sdio-firmware-aml.service
E: TAGS=:systemd:
P: /devices/http://d0070000.sdio/mmc_host/sdio/sdio:0001/sdio:0001:2
L: 0
E: DEVPATH=/devices/http://d0070000.sdio/mmc_host/sdio/sdio:0001/sdio:0001:2
E: DRIVER=bcmsdh_sdmmc
E: SDIO_CLASS=00
E: SDIO_ID=02D0:4334
E: MODALIAS=sdio:c00v02D0d4334
E: SUBSYSTEM=sdio
E: USEC_INITIALIZED=10479644
E: SYSTEMD_WANTS=brcmfmac_sdio-firmware-aml.service
E: TAGS=:systemd: