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| author | Ping-Ke Shih <pkshih@realtek.com> | 2025-07-24 08:48:15 +0800 |
|---|---|---|
| committer | Ping-Ke Shih <pkshih@realtek.com> | 2025-08-12 15:56:46 +0800 |
| commit | 58de1f91e033b1fface8d8948984583125f93736 (patch) | |
| tree | aa07d1f3a084f384375e4b2741e7aa0bfd8edeb3 /tools/perf/scripts/python/task-analyzer.py | |
| parent | d9104cec3e8fe4b458b74709853231385779001f (diff) | |
wifi: rtw88: sdio: use indirect IO for device registers before power-on
The register REG_SYS_CFG1 is used to determine chip basic information
as arguments of following flows, such as download firmware and load PHY
parameters, so driver read the value early (before power-on).
However, the direct IO is disallowed before power-on, or it causes wrong
values, which driver recognizes a chip as a wrong type RF_1T1R, but
actually RF_2T2R, causing driver warns:
rtw88_8822cs mmc1:0001:1: unsupported rf path (1)
Fix it by using indirect IO before power-on.
Reported-by: Piotr Oniszczuk <piotr.oniszczuk@gmail.com>
Closes: https://lore.kernel.org/linux-wireless/699C22B4-A3E3-4206-97D0-22AB3348EBF6@gmail.com/T/#t
Suggested-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Tested-by: Piotr Oniszczuk <piotr.oniszczuk@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250724004815.7043-1-pkshih@realtek.com
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions