linux-kernel - Re: [PATCH v1] Bluetooth: btqca: Add WCN6855 firmware priority selection feature

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Message-ID: <093749fb-5eee-4a1c-a29e-8232e0c9dd6d@quicinc.com>
Date: Wed, 12 Nov 2025 19:29:16 +0800
From: Shuai Zhang <quic_shuaz@...cinc.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Bartosz Golaszewski
	<brgl@...ev.pl>,
        Marcel Holtmann <marcel@...tmann.org>,
        "Luiz Augusto von
 Dentz" <luiz.dentz@...il.com>
CC: <linux-arm-msm@...r.kernel.org>, <linux-bluetooth@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_chejiang@...cinc.com>,
        <quic_jiaymao@...cinc.com>, <quic_chezhou@...cinc.com>
Subject: Re: [PATCH v1] Bluetooth: btqca: Add WCN6855 firmware priority
 selection feature

Hi Konrad

Thank you for your review.
On 11/12/2025 5:53 PM, Konrad Dybcio wrote:
> On 11/12/25 8:46 AM, Shuai Zhang wrote:
>> For WCN6855: download wcnhpbtfwxx.tlv and wcnhpnvxx.xxx;
>> if they do not exist, download hpbtfwxx.tlv and hpnvxx.xxx instead.
>>
>> Signed-off-by: Shuai Zhang <quic_shuaz@...cinc.com>
>> ---
> 
> Would these files be fundamentally any different, or is it a workaround
> for someone else being creative with filenames?
> 

The prefix “wcn” corresponds to the WCN685x chip, while entries without
the “wcn” prefix correspond to the QCA2066 chip. There are some feature
differences between the two. 

However, due to historical reasons, the WCN685x chip has been using firmware
without the “wcn” prefix. We are now correcting the mapping between the chip
and its corresponding firmware.

If it is necessary to add a comment to explain this, I will submit a new patch.

> Konrad

Best,regard
Shuai