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Fri, 6 Mar 2026 19:34:07 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface From: Javier Tia Date: Fri, 06 Mar 2026 18:33:32 -0600 Subject: [PATCH 13/18] wifi: mt76: mt7925: restore FW_DWLD_BYPASS_DMASHDL in MT7927 PM wake path 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: quoted-printable Message-Id: <20260306-mt7927-wifi-support-v1-13-c77e7445511d@jetm.me> To: linux-wireless@vger.kernel.org, Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Deren Wu , Ming Yen Hsieh Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Marcin FM , Cristian-Florin Radoi , George Salukvadze , Evgeny Kapusta <3193631@gmail.com>, Samu Toljamo , Ariel Rosenfeld , Chapuis Dario , =?utf-8?q?Thibaut_Fran=C3=A7ois?= , =?utf-8?q?=E5=BC=A0=E6=97=AD=E6=B6=B5?= , Javier Tia X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1792; i=floss@jetm.me; h=from:subject:message-id; bh=zsKSZ6XbfqOeGxStPL+whgnb6wkPhoFUKNokNTtSVR0=; b=owEB7QES/pANAwAKAbXuwwuoZ3cfAcsmYgBpq3JQX3+JxeZEXN62VsVO5lnz+WTaT65EnrldH CJWgaPIScuJAbMEAAEKAB0WIQSbE7ILzw7eI0VKk8m17sMLqGd3HwUCaatyUAAKCRC17sMLqGd3 H2CiDACEFAV3qPs/nohNmPTJ0CopUnOYlP8GEO3F6wWjuQM8rO1q/DgKzmbfYyRlgKWs3fOQNZx SaF2DWQzWwiE2yz8q6khhF7+IPLc2Ap1B0g8qB1uEoeOwgPNGeGKnNqXJGn9VOP9tYtYz7sDqOP Iq3mtn6s44Fh2OccwQwhK9ylp7uvE695HbOYOugWleuzY+LOwKQVVHhk1GliJpfYLFos7kuyg1+ 8qaJWNASj/Ht39JKbVu9PAJe+xGQsAxzyk8Vkjiw/LdyHuWaSIQxsiNlRf1WjZHKbd9zRB1R3x2 RfFq+c+Z1c6auSnxOhA82w+56oGMV8kOtfFWz9lCVF8xTW+6krx6O0NpzASN6pVYYRRgT2EJzmp NxKr9A1XM+Bx8AHaNedkrAnRFNHM14Oj065SM2cRb6DNxHyyNhAT+JgArwJmeg3lVxnSqaf3yX+ ikvUuXTQx0GyYqjbmIsQcYUU/YGDzJmWjeap/JCk7eG1eMEvB5/CScPBbJJm9ONdUkEqI= X-Developer-Key: i=floss@jetm.me; a=openpgp; fpr=9B13B20BCF0EDE23454A93C9B5EEC30BA867771F In-Reply-To: <20260306-mt7927-wifi-support-v1-0-c77e7445511d@jetm.me> References: <20260306-mt7927-wifi-support-v1-0-c77e7445511d@jetm.me> mt7927_dma_init() sets FW_DWLD_BYPASS_DMASHDL (BIT(9) of GLO_CFG) during initial probe, but mt792x_dma_enable() - called on every PM wake cycle - did not restore it. On MT7927, every CLR_OWN causes the ROM to reinitialize WFDMA which resets GLO_CFG. The PM wake path already restores ADDR_EXT_EN and clears CSR_LBK_RX_Q_SEL_EN but was missing FW_DWLD_BYPASS_DMASHDL. Add FW_DWLD_BYPASS_DMASHDL to the existing is_mt7927() block in mt792x_dma_enable() so all three MT7927-specific GLO_CFG bits are consistently restored after PM wake. Tested-by: Marcin FM Tested-by: Cristian-Florin Radoi Tested-by: George Salukvadze Tested-by: Evgeny Kapusta <3193631@gmail.com> Tested-by: Samu Toljamo Tested-by: Ariel Rosenfeld Tested-by: Chapuis Dario Tested-by: Thibaut Fran=C3=A7ois Tested-by: =E5=BC=A0=E6=97=AD=E6=B6=B5 Signed-off-by: Javier Tia --- drivers/net/wireless/mediatek/mt76/mt792x_dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c b/drivers/net/= wireless/mediatek/mt76/mt792x_dma.c index 32364f19007d..95082d64fb69 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c +++ b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c @@ -168,7 +168,8 @@ int mt792x_dma_enable(struct mt792x_dev *dev) =20 if (is_mt7927(&dev->mt76)) { mt76_set(dev, MT_WFDMA0_GLO_CFG, - MT_WFDMA0_GLO_CFG_ADDR_EXT_EN); + MT_WFDMA0_GLO_CFG_ADDR_EXT_EN | + MT_WFDMA0_GLO_CFG_FW_DWLD_BYPASS_DMASHDL); mt76_clear(dev, MT_WFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_CSR_LBK_RX_Q_SEL_EN); } --=20 2.53.0