Is anyone else having issues with the hci_ll after a2e02f38eff8 ("Bluetooth: hci_ll: set operational frequency earlier") was applied? I have an i.MX6Q with a WL1837MOD attached to UART2. After this patch I git a bunch of timeouts when initializing the device using the 5.3 and 5.3.1 kernel. I know a bunch of omap and imx users have done some various tests over the years, so I thought I'd ask. [ 195.911836] Bluetooth: hci0: command 0xff36 tx timeout [ 206.071837] Bluetooth: hci0: command 0x1001 tx timeout [ 214.231862] Bluetooth: hci0: Reading TI version information failed (-110) [ 214.238712] Bluetooth: hci0: download firmware failed, retrying... [ 216.391834] Bluetooth: hci0: command 0xff36 tx timeout [ 226.551843] Bluetooth: hci0: command 0x1001 tx timeout [ 234.711856] Bluetooth: hci0: Reading TI version information failed (-110) [ 234.718705] Bluetooth: hci0: download firmware failed, retrying... [ 236.871832] Bluetooth: hci0: command 0xff36 tx timeout [ 247.031837] Bluetooth: hci0: command 0x1001 tx timeout [ 255.191852] Bluetooth: hci0: Reading TI version information failed (-110) [ 255.198706] Bluetooth: hci0: download firmware failed, retrying... Can't init device hci0: Connection timed out (110) Revering this patch fixes the issue, and subsequent patch proposals form Philipp haven't seemed to fix the issues for me on 5.3 adam