linux-kernel - Re: [PATCH v3] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc.

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Message-Id: <CF703E6A-EA21-45D2-9FDD-5A46D516FB15@holtmann.org>
Date:   Wed, 2 Jun 2021 22:11:20 +0200
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Zijun Hu <zijuhu@...eaurora.org>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, bgodavar@...eaurora.org,
        c-hbandi@...eaurora.org, hemantg@...eaurora.org, mka@...omium.org,
        rjliao@...eaurora.org, tjiang@...eaurora.org
Subject: Re: [PATCH v3] Bluetooth: btusb: fix bt fiwmare downloading failure
 issue for qca btsoc.

Hi Zijun,

> This is btsoc timing issue, after host start to downloading bt firmware,
> ep2 need time to switch from function acl to function dfu, so host add
> 20ms delay as workaround.
> 
> Signed-off-by: Tim Jiang <tjiang@...eaurora.org>
> ---
> drivers/bluetooth/btusb.c | 5 +++++
> 1 file changed, 5 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel