linux-kernel - Re: [PATCH 00/10] RTW88: Add support for USB variants

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Date:   Mon, 23 May 2022 11:39:49 +0000
From:   Ping-Ke Shih <pkshih@...ltek.com>
To:     "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "linux@...i-kroll.de" <linux@...i-kroll.de>
CC:     "johannes@...solutions.net" <johannes@...solutions.net>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "neojou@...il.com" <neojou@...il.com>,
        "kvalo@...nel.org" <kvalo@...nel.org>,
        "tony0620emma@...il.com" <tony0620emma@...il.com>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "martin.blumenstingl@...glemail.com" 
        <martin.blumenstingl@...glemail.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH 00/10] RTW88: Add support for USB variants

On Mon, 2022-05-23 at 08:53 +0200, Sascha Hauer wrote:
> Hi Hans Ulli,
> 
> On Mon, May 23, 2022 at 06:07:16AM +0200, Hans Ulli Kroll wrote:
> > On Wed, 2022-05-18 at 10:23 +0200, Sascha Hauer wrote:
> > > This series adds support for the USB chip variants to the RTW88 driver.
> > > 
> > 
> > Hi Sascha
> > 
> > glad you found some *working* devices for rtw88 !
> 
> Well, not fully. I had to add [3] = RTW_DEF_RFE(8822c, 0, 0), to the
> rtw8822c_rfe_defs array.
> 
> > I spend some of the weekend testing your driver submission.
> > 
> > for rtl8821cu devices I get following output
> > 
> > some Logilink device
> > 
> > [ 1686.605567] usb 1-5.1.2: New USB device found, idVendor=0bda, idProduct=c811, bcdDevice=
> > 2.00
> > [ 1686.614186] usb 1-5.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> > [ 1686.621721] usb 1-5.1.2: Product: 802.11ac NIC
> > [ 1686.626227] usb 1-5.1.2: Manufacturer: Realtek
> > [ 1686.630695] usb 1-5.1.2: SerialNumber: 123456
> > [ 1686.640480] rtw_8821cu 1-5.1.2:1.0: Firmware version 24.5.0, H2C version 12
> > [ 1686.932828] rtw_8821cu 1-5.1.2:1.0: failed to download firmware
> > [ 1686.945206] rtw_8821cu 1-5.1.2:1.0: failed to setup chip efuse info
> > [ 1686.951538] rtw_8821cu 1-5.1.2:1.0: failed to setup chip information
> > [ 1686.958402] rtw_8821cu: probe of 1-5.1.2:1.0 failed with error -22
> > 
> > above is same with some from Comfast
> > 
> > The worst in the list is one from EDUP
> > 
> > [ 1817.855704] rtw_8821cu 1-5.1.2:1.2: Firmware version 24.5.0, H2C version 12
> > [ 1818.153918] rtw_8821cu 1-5.1.2:1.2: rfe 255 isn't supported
> > [ 1818.165176] rtw_8821cu 1-5.1.2:1.2: failed to setup chip efuse info
> > [ 1818.171505] rtw_8821cu 1-5.1.2:1.2: failed to setup chip information
> 
> Do these chips work with your out of tree variant of this driver?
> 
> Is the efuse info completely 0xff or only the field indicating the rfe
> option?

I check RFE allocation of 8821c. 255 isn't defined.
If efuse info isn't complete 0xff, try to force RFE 0 to see if it works.

> 
> > rtl8822bu devices are working fine ...
> 
> Nice. Did you test a rtw8723du device as well?
> 

I have a 8723DU module.

With this patchset, it can find AP, but can't estiablish connection.
I check air capture, but no TX packets found.
That says RX works, but TX doesn't.

With master branch of Hans Ulli GitHub, it shows many "atomic scheduling"
warnings when I insert the USB dongle.
When I do 'iw scan', it is going to get stuck, and I can only push
power button to turn off my laptop.

Ping-Ke