Re: [PATCH v2 1/2] Bluetooth: btbcm: raise ACL priority on Apple Broadcom controllers

[André Eikmeyer]

On Fri, 6 Nov 2026 11:53:13 +0100
Sasha Finkelstein <k@xxxxxxxxxxxxxx> wrote:

Hi Sasha, coming back to this after testing

> >> You probably shouldn't, or at least base it on v2, not v3 (that one
> >> ended up being a bad idea and caused firmware timeouts, so Asahi
> >> downstream ships something more similar to v2).

Linux doesn't keep ACL link across sleep. The core disconnects all
links before suspend ("terminated by local host for suspend"). I saw
that with S3 on the BCM4364 and with s2idle/s3 on the BCM4377. After
resume my headphones reconnect and my patch sets the priority again.
On the T2 Macs the BCM4377 BT itself does not come back from
s2idle yet, even with patches 01, 04 and 05 from your 4388 series,
so I couldn't test there. Would need to investigate, tho s2idle is not
my priority right now.

Since connection time works on these chips, I'd keep 1/2 as it is while
being open for proposals.


Andre