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Sun, 13 Sep 2026 02:08:35 -0700 (PDT) From: Cristian Fleischer To: Junjie Cao , Felix Fietkau , Lorenzo Bianconi Cc: Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Huy Nguyen Dinh Quang , Devin Wittmayer , linux-wireless@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH wireless] wifi: mt76: mt792x: treat 0xff ACPI SAR entries as no limit Date: Sun, 13 Sep 2026 11:06:27 +0200 Message-ID: <20260913090744.316095-1-cristian.fleischer@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Thu, 10 Sep 2026 09:23:00 +0800, Junjie Cao wrote: > Some ASUS firmware includes 0xff values in MTGS power slots. Same failure on an ASUS Vivobook S 16 M5606WA (MT7922, mt7921e, BIOS M5606WA.316), kernel 7.2.4 with this patch applied on top. The DSDT carries MTCL version 2, MTDS with two identical tables (1A 19 17 11 15 10 12 12 12 12 10) and MTGS version 4 with pwr 0xff in every slot (offset 0x00 in entry 1, 0xff in entries 2-6). Region ETSI. Before, txpower_sku showed tmac 3 for every OFDM/HT/VHT/HE rate on every channel; the AP never answered auth frames from a few rooms away and TX sat at 6 Mbit/s with ~3 retries per frame once associated. After: 5 GHz ch 36/80 MHz: tmac 29, TX/RX 866 Mbit/s VHT-MCS 9, 7 retries in 776 frames, association succeeds from the spot that used to fail. 2.4 GHz ch 11: tmac 30, TX 117 / RX 104 Mbit/s. Tested-by: Cristian Fleischer