wifi: rtw89: pci: enable LTR based on pcie control register

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Originally, driver always transmits LTR (Latency Tolerance Reporting) to
pcie host, but it may cause pcie link down on some platforms because
LTR is not supported. As a result, driver will check the control
register of LTR setting to decide whether to enable LTR feature.

This applies to Wi-Fi 6 chips only. For Wi-Fi 7 chips, although the
driver still issues LTR, the hardware has its own internal logic
to determine whether to actually transmit it to pcie host.

Signed-off-by: Dian-Syuan Yang <dian_syuan0116@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260515014433.16168-5-pkshih@realtek.com

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Dian-Syuan Yang 2026-05-15 09:44:24 +08:00 • committed by Ping-Ke Shih

parent 125fd4514f

commit 779bbe1902

1 changed files with 15 additions and 1 deletions

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drivers/net/wireless/realtek/rtw89/pci.c

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