Currently we use the firmware from 2019-03-14:
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=7bc246451318b3536d9bfd3c4e46d541a9831b33
It should be updated to 2019-10-07:
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=aa95e90b2c638f1ca6647d12b2d1b18284428f9c