Re: [PATCH v6 3/6] Bluetooth: hci_qca: Fix frame reassembly errors for wcn3990

From: Matthias Kaehlcke
Date: Thu Dec 27 2018 - 15:25:19 EST

On Thu, Dec 27, 2018 at 01:01:33PM +0530, Balakrishna Godavarthi wrote:
> During initalization of wcn3990, we observed UART is reading some
> stray bytes on the Rx line. This is logging Frame reassembly errors
> on the serial console. This could be because of tristate of Tx line
> of wcn3990 during boot up.

My testing suggests that this change is not needed if the Rx line of
the SoC/AP is configured with a pull-up. We'd probably all prefer not
to have this change if there's a neater way to address the garbage
data. Could you test with adding the pull-up and dropping this patch
on your side?