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

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Date:   Mon, 23 May 2022 08:53:48 +0200
From:   Sascha Hauer <s.hauer@...gutronix.de>
To:     Hans Ulli Kroll <linux@...i-kroll.de>
Cc:     linux-wireless@...r.kernel.org, Neo Jou <neojou@...il.com>,
        Ping-Ke Shih <pkshih@...ltek.com>,
        Yan-Hsuan Chuang <tony0620emma@...il.com>,
        Kalle Valo <kvalo@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        kernel@...gutronix.de, Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH 00/10] RTW88: Add support for USB variants

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?

> 
> rtl8822bu devices are working fine ...

Nice. Did you test a rtw8723du device as well?

Sascha

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