Re: [PATCH 05/20] wifi: rtw88: Allow rtw_chip_info.ltecoex_addr to be NULL

[Bitterblue Smith <rtl8821cerfe2@gmail.com>]

On 15/08/2024 09:33, Ping-Ke Shih wrote:
> Bitterblue Smith <rtl8821cerfe2@gmail.com> wrote:
>> RTL8821A doesn't have this. Trying to use it results in error messages,
>> so don't try if ltecoex_addr is NULL.
> 
> In short term, it is fine to avoid these messages, but we need BT-coexistence
> for RTL8821A if we want better user experience with BT.
> 
>>
>> Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
> 
> 
> Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
> 
> 

I wasn't able to find this LTE stuff in the btc folder:
https://github.com/morrownr/8821au-20210708/tree/main/hal/btc

I did what I could to make the coexistence work, and it does.
I used my Bluetooth headphones for several days, listening to
music and watching videos. There is only a problem with the
wifi speeds with one router.

With ISP's HG6544C router:
Official driver: 3/5 Mbps.
rtw88: a bit more, but not steady at all. Not enough to watch
a 1080p Youtube video.

With my D-Link Eagle R32 router running Openwrt, on the same
channel:
Official driver: 6/10 Mbps.
rtw88: download starts around 30, climbs to 50 / upload is 10
Mbps. I can watch a 1080p Youtube video.

The music doesn't cut out during any speed tests.

I also tested transferring files to and from my phone. I don't
have other types of devices to test.