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wifi: rtw89: Turbo mode for RTL8851BU/RTL8852BU

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RTL8851BU and RTL8852BU currently have much lower TX speed than
expected, ~100 and ~300 Mbps, respectively. This is because part of the
chip's memory is allocated for some unknown firmware features instead of
the TX buffers.

The vendor drivers have a module parameter called "rtw_quota_turbo_en",
which can be used to choose between full TX speed or the unknown
firmware features. It is on by default.

Change the relevant chip parameters to implement the turbo mode. Do it
only for USB because PCI is already fast even without the turbo mode.
It's unclear if SDIO will need it or not.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/88cce107-ff52-496f-bb77-b930e4182b67@gmail.com
This commit is contained in:
Bitterblue Smith 2026-02-06 20:01:34 +02:00 • committed by Ping-Ke Shih
commit 2d85152020
4 changed files with 51 additions and 52 deletions
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