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Date:   Mon, 13 Jul 2020 18:32:41 +0200
From:   Marcel Holtmann <>
To:     Vasily Khoruzhick <>
Cc:     Rob Herring <>,
        Maxime Ripard <>,
        Chen-Yu Tsai <>,
        Johan Hedberg <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        devicetree <>,
        arm-linux <>,
        kernel list <>,
        linux-bluetooth <>,
        "open list:NETWORKING [GENERAL]" <>,
        Ondrej Jirman <>
Subject: Re: [PATCH 1/3] Bluetooth: Add new quirk for broken local ext
 features max_page

Hi Vasily,

>> maybe just the read sync train params command is broken? Can you change the init code and not send it and see if the rest of the init phase proceeds. I would rather have the secure connections actually tested before dismissing it altogether.
> I don't think that I have any devices that support secure connections
> to test, I've got only a bluetooth mouse and headphones, both are from
> the 2.0 era.
> FWIW unofficial recommendation from Realtek to Pine64 was to avoid
> using any 4.1+ features on this chip. Unfortunately I don't have any
> contacts with Realtek, so I can't confirm that.
>> Mind you, there were broken Broadcom implementation of connectionless slave broadcast as well. Maybe this is similar.
> I'd prefer to stick to what works unless there's some comprehensive
> test that can figure out what's broken.

check if removing the read sync trains params command makes the controller initialize and usable. Then we see about the rest.



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