https://bugzilla.kernel.org/show_bug.cgi?id=193671 Bug ID: 193671 Summary: btattach -B /dev/ttyS1 -P qca -> Frame reassembly failed (-84) Product: Drivers Version: 2.5 Kernel Version: <4.9.*,4.10-rc6 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: nrndda@xxxxxxxxx Regression: No Created attachment 253591 --> https://bugzilla.kernel.org/attachment.cgi?id=253591&action=edit ACPI BT part Dell Venue 11 Pro has Dell Wireless 1538, which is QCA6234 SIP module. WiFi works, but Bluetooth doesn't. It is recognized by kernel: 80860F0A:00: ttyS1 at MMIO 0x9094d000 (irq = 183, base_baud = 2764800) is a 16550A But then, doing `btattach -B /dev/ttyS1 -P qca` gives this: ROME setup Set UART speed to 3000000 Frame reassembly failed (-84) hci1 command 0xfc00 tx timeout Failed to read version of ROME (-110) Failed to get version 0xffffff92 ACPI says that it uses 115200 speed, but bt QCA protocol tries 3000000. Windows drivers mention 115200 as initial speed as well. Also after btattach number of interrupts rises and is claimed by serial: 183: 2 1 0 0 IO-APIC 39-fasteoi serial -- You are receiving this mail because: You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
