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[92.254.21.157]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5f62583d83bsm395893a12.52.2025.04.17.17.28.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Apr 2025 17:28:46 -0700 (PDT) From: Henk Vergonet To: linux-wireless@vger.kernel.org Cc: Felix Fietkau , Lorenzo Bianconi , Henk Vergonet Subject: [PATCH 2/2] mt76: mt76x2: Disable VHT on 0x76320044 ASIC Date: Fri, 18 Apr 2025 02:28:27 +0200 Message-ID: <20250418002827.26806-2-henk.vergonet@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250418002827.26806-1-henk.vergonet@gmail.com> References: <20250418002827.26806-1-henk.vergonet@gmail.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Henk Vergonet VHT is not supported on ASIC revision 0x76320044 This fixes the 5G connectibity issue on LiteOn WN4519R module see https://github.com/openwrt/mt76/issues/971 And may also fix the 5G issues on the XBox One Wireless Adapter see https://github.com/openwrt/mt76/issues/200 --- drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c b/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c index 33a14365ec9b..fbb337ef6b68 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c @@ -191,6 +191,7 @@ int mt76x2u_register_device(struct mt76x02_dev *dev) { struct ieee80211_hw *hw = mt76_hw(dev); struct mt76_usb *usb = &dev->mt76.usb; + bool vht_flag; int err; INIT_DELAYED_WORK(&dev->cal_work, mt76x2u_phy_calibrate); @@ -217,7 +218,15 @@ int mt76x2u_register_device(struct mt76x02_dev *dev) /* check hw sg support in order to enable AMSDU */ hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_TX_SG_MAX_SIZE : 1; - err = mt76_register_device(&dev->mt76, true, mt76x02_rates, + switch(dev->mt76.rev ) { + /* these ASIC revisions do not support VHT */ + case 0x76320044: + vht_flag = false; + break; + default: + vht_flag = true; + } + err = mt76_register_device(&dev->mt76, vht_flag, mt76x02_rates, ARRAY_SIZE(mt76x02_rates)); if (err) goto fail;