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Wed, 01 Apr 2026 10:43:28 -0700 (PDT) Message-ID: Date: Wed, 1 Apr 2026 20:43:27 +0300 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Bitterblue Smith Subject: Re: [PATCH rtw-next 00/12] wifi: rtw89: Add support for RTL8922AU To: Ping-Ke Shih , "linux-wireless@vger.kernel.org" References: <8549233f-dd83-4e77-be88-5e22ecd4f5f1@gmail.com> <25781f4aa6cc427caf396374ca46d380@realtek.com> Content-Language: en-US In-Reply-To: <25781f4aa6cc427caf396374ca46d380@realtek.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 30/03/2026 05:53, Ping-Ke Shih wrote: > Bitterblue Smith wrote: >> Often one or more of these messages appears when the chip powers on: >> >> [ +2.167037] rtw89_8922au 1-2:1.0: failed to wait RF DACK >> >> [ +2.942749] rtw89_8922au 1-2:1.0: failed to wait RF TSSI >> >> [ +0.019006] rtw89_8922au 2-4:1.0: failed to wait RF PRE_NTFY >> >> [ +5.985900] rtw89_8922au 2-4:1.0: failed to wait RF DPK >> >> It's unclear why. > > RTL8922D done RF calibrations by firmware one by one, so driver should > wait for previous one done, and trigger next one. However, it'd be > well to just do waiting at the last to wait for all calibrations. > > Try to enlarge waiting time in rtw8922a_rfk_channel(). > I was convinced I tried that already, but no. After increasing all delays a bit the warnings are much more rare. >> >> It seems to work well anyway. >> > > If you can yield the highest rate (MCS13), I'd say it is fine. > > Ping-Ke > Testing with RTL8832CU (Brostrend AX8) in AP mode, the RTL8912AU can reach 1.5 Gbps (MCS10) RX, 1 Gbps TX. I used the RTL8832CU because my router is not working well with 160 MHz.