linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: sc8280xp: Add Huawei Matebook E Go (sc8280xp)

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Message-ID: <20241221052626.451989-1-mitltlatltl@gmail.com>
Date: Sat, 21 Dec 2024 13:26:25 +0800
From: Pengyu Luo <mitltlatltl@...il.com>
To: johan@...nel.org
Cc: andersson@...nel.org,
	chenxuecong2009@...look.com,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	dmitry.baryshkov@...aro.org,
	gty0622@...il.com,
	johan+linaro@...nel.org,
	konrad.dybcio@....qualcomm.com,
	konradybcio@...nel.org,
	krzk+dt@...nel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	mitltlatltl@...il.com,
	robh@...nel.org
Subject: Re: [PATCH 3/3] arm64: dts: qcom: sc8280xp: Add Huawei Matebook E Go (sc8280xp)

On Sat, Dec 21, 2024 at 12:20 AM Johan Hovold <johan@...nel.org> wrote:

> On Sat, Dec 14, 2024 at 03:39:27PM +0200, Dmitry Baryshkov wrote:
> > On Sat, Dec 14, 2024 at 08:23:00PM +0800, Pengyu Luo wrote:
> 
> > > >> +
> > > >> +                /* /lib/firmware/ath11k/WCN6855/hw2.1/board-2.bin
> > > >> +                 * there is no calibrate data for huawei,
> > > >> +                 * but they have the same subsystem-device id
> > > >> +                 */
> > > >> +                qcom,ath11k-calibration-variant = "LE_X13S";
> 
> > > Finally, I found something, after I enabled ath11k boot dbg, I got my
> > > id_string='bus=pci,vendor=17cb,device=1103,subsystem-vendor=17cb,subsystem-device=0108,qmi-chip-id=2,qmi-board-id=255`
> > >
> > > With qca-swiss-army-knife (see [1])
> > >
> > > $ ./ath11k-bdencoder -e board-2.bin | grep -i "$id_string"
> > > bus=pci,vendor=17cb,device=1103,subsystem-vendor=17cb,subsystem-device=0108,qmi-chip-id=2,qmi-board-id=255.bin created size: 60048
> > >
> > > It have already been here. So that means I don't need to extract from
> > > Windows. I just extract it from linux-firmware then give it a variant
> > > name and send patches to ath11k, right?
> >
> > No. Usually 255 is an ID that is used by a variety of boards. So,
> > basically, you have to extract board data from Windows, add a proper
> > calibration variant that is specific to your board and then send the
> > resulting data to the ath11k mailing list.
> 
> The board files used by Windows are not compatible with the Linux
> firmware, so the calibration data needs to come from Qualcomm.
> 

Then I don't understand why those bdwlan.* files would be in the
firmware tree.

> Try filing a request in the bugzilla:
> 
> 	https://bugzilla.kernel.org/buglist.cgi?quicksearch=ath11k&list_id=1147229
> 

Thanks, I will try it.

> Johan

Best wishes,
Pengyu