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Tue, 10 Nov 2026 06:36:37 -0800 (PST) Received: from [192.168.1.50] ([188.27.124.137]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-498362eb158sm5319955f8f.36.2026.11.10.06.36.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 Nov 2026 06:36:37 -0800 (PST) Message-ID: <45407e4f-9009-4f0b-a9a8-58b7052d25a1@gmail.com> Date: Tue, 10 Nov 2026 16:36:35 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Bitterblue Smith Subject: Re: [PATCH rtw-next v2 6/7] wifi: rtw88: 88xxa: adapt channel sensing to receiver gain To: Luka Gejak , Ho Jie Feng , Ping-Ke Shih Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261031070950.425176-1-hjf3108@gmail.com> <20261031070950.425176-7-hjf3108@gmail.com> <4ada79186cd882a6d3344c43579e5addc4d4e644@linux.dev> <3bd7d396-bb54-41bc-890a-bfeab90dca3a@gmail.com> <1d7fe388a84ba7a078efbf1972869d63cb8234ea@linux.dev> Content-Language: en-US In-Reply-To: <1d7fe388a84ba7a078efbf1972869d63cb8234ea@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 06/11/2026 22:27, Luka Gejak wrote: > November 6, 2026 at 8:46 PM, "Bitterblue Smith" wrote: > >> >> On 06/11/2026 19:34, Luka Gejak wrote: >> >>> > > [ ... ] > >>> >>> Bitterblue, did you turn EDCCA off through the edcca_enable debugfs file? >>> >> Yes, that's what I did. >> > > Thanks for the answer. So I think EDCCA itself is fine with this patch, > and it is the lower thresholds of the adaptivity mode that keep the > firmware from leaving LPS. > > To me this looks a lot like b0435910e47d ("wifi: rtw88: 8822b: Relax > ETSI EDCCA threshold on 2.4 GHz"). There an RTL8812BU running as a 2.4 > GHz AP wasn't seen in scans and failed to get TX reports under the > ETSI threshold, mostly because of energy from the adapter's own USB 3 > link. The fix was to use the normal threshold on 2.4 GHz under ETSI, > capped for EN 300 328. Your network is on channel 13, so that would fit. > > The 8812au vendor drivers don't use the adaptivity thresholds by default > either. Both v5.6.4.2 and 8812au-20210820 build with > > CONFIG_RTW_ADAPTIVITY_EN = disable > > and as far as I can see phydm_adaptivity() then stays on the normal > (mode2) thresholds. > > Jie Feng, maybe doing the same as 8822b would work for v3, the normal > thresholds on 2.4 GHz under ETSI and the adaptivity ones for 5 GHz and > JP. Bitterblue, is the adapter on a USB 3 port, and do you see the LPS > failures on 5 GHz as well? > It's in a USB 2 port. I am seeing the LPS failures on 5 GHz too. Channel 100, 80 MHz wide. > Best regards, > Luka Gejak