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Fri, 10 Apr 2026 01:00:30 -0700 (PDT) From: Louis Kotze To: linux-wireless@vger.kernel.org Cc: pkshih@realtek.com, rtl8821cerfe2@gmail.com, linux-kernel@vger.kernel.org, Louis Kotze Subject: [PATCH 0/2] wifi: rtw89: fix RF calibration for USB transport Date: Fri, 10 Apr 2026 10:00:15 +0200 Message-ID: <20260410080017.82946-1-loukot@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <795a8567fdbe48babc5cf0f2b5e10c0a@realtek.com> References: <795a8567fdbe48babc5cf0f2b5e10c0a@realtek.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RF calibration on USB adapters (RTL8922AU) fails frequently because the timeout values in rtw89_phy_rfk_report_wait() are designed for PCIe and too tight for USB H2C/C2H round-trip latency. Patch 1 applies a 4x timeout multiplier for USB devices, based on measured calibration times from two independent testers across 2.4GHz, 5GHz, and 6GHz bands. Patch 2 makes calibration timeouts non-fatal on USB, since the radio continues to operate correctly despite occasional incomplete calibrations. PCIe error handling is unchanged. This is based on Ping-Ke's suggestion in the RTL8922AU support thread: https://lore.kernel.org/linux-wireless/795a8567fdbe48babc5cf0f2b5e10c0a@realtek.com/ Louis Kotze (2): wifi: rtw89: phy: increase RF calibration timeouts for USB transport wifi: rtw89: phy: make RF calibration timeouts non-fatal on USB drivers/net/wireless/realtek/rtw89/phy.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) -- 2.53.0