linux-kernel - Re: QCA NVM file for the X13s (WCN6855)

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Message-ID: <c23fe4b8-04ae-41fb-a166-0b8a84e2ef70@molgen.mpg.de>
Date: Thu, 14 Nov 2024 09:27:46 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Zijun Hu <quic_zijuhu@...cinc.com>
Cc: Johan Hovold <johan@...nel.org>, Tim Jiang <quic_tjiang@...cinc.com>,
 Janaki Ramaiah Thota <quic_janathot@...cinc.com>,
 linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: QCA NVM file for the X13s (WCN6855)

Dear Zijun,


Am 14.11.24 um 07:57 schrieb quic_zijuhu:
> On 5/2/2024 10:13 PM, Johan Hovold wrote:
>> On Thu, May 02, 2024 at 09:46:38PM +0800, quic_zijuhu wrote:
>>> On 5/2/2024 9:25 PM, Johan Hovold wrote:
>>>> On Thu, May 02, 2024 at 08:56:12PM +0800, quic_zijuhu wrote:
>>>>> On 5/2/2024 6:57 PM, Johan Hovold wrote:
>>
>>>> It's WCN6855 but the Linux driver currently uses the firmware you pushed
>>>> for QCA2066.
>>>>
>>>>>> The current Linux driver is using the generic NVM file (hpnv21.bin) for
>>>>>> WCN6855, but connectivity is quite bad and I only get 2-3 meters of
>>>>>> range.
>>>>
>>>>>>> Switching to the board-specific NVM configuration (hpnv21b.b8c) that
>>>>> it seems hpnv21b.b8c is a wrong NVM name.
>>>>> is it hpnv21g.b8c?
>>>>
>>> hpnv21g.b8c is the right NVM for the machine.
>>
>> Ok, thanks. I'll try to find some time to test with this one as well.
>>
>>>> What is the difference between those two?
>>
>>> i am afraid that i can't answer your question due to company CCI policy
>>
>> I understand.
>>
>>>> Exactly. It's a Lenovo machine that comes with Windows pre-installed and
>>>> we're working on enabling Linux on it with some help from Lenovo.
>>>>
>>>>> need customer to make a request for their requirements if the answer is
>>>>> yes for above question.
>>>>
>>>> Lenovo has made requests for X13s firmware from Qualcomm and pushed it
>>>> to linux-firmware [1], but they have not yet been able to get Qualcomm
>>>> to provide an NVM configuration file for Bluetooth (I think the problem
>>>> may be finding the right person to talk to inside Qualcomm).
>>>>
>>>> So I was hoping maybe you could help us with this since the difference
>>>> between 'hpnv21.bin' that you pushed to linux-firmware and what came
>>>> with Windows appears to be really small (e.g. just a few bytes).
>>>>
>>> let me try to find out the right person who will push this task at next monday.
>>> there are some other internal procedures before we can push BT firmware
>>> into linux-firmware.
> 
> have up-streamed 22 NVM files which come from WOS into linux-firmware as
> shown by below link, both hpnv21g.b8c and hpnv21.b8c are also contained.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=77a11ffc5a0aaaadc870793d02f6c6781ee9f598
> 
> (^^)(^^).

Thank you. Could you please enlighten me, what WOS is?


Kind regards,

Paul