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Tue, 17 Feb 2026 10:38:15 -0800 (PST) Received: from oss.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ad1aaf4b31sm100667375ad.86.2026.02.17.10.38.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Feb 2026 10:38:14 -0800 (PST) Date: Wed, 18 Feb 2026 00:08:08 +0530 From: Mohd Ayaan Anwar To: "Russell King (Oracle)" Cc: Alexandre Torgue , Andrew Lunn , "David S. Miller" , Eric Dumazet , Frank Li , imx@lists.linux.dev, Jakub Kicinski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, Maxime Chevallier , netdev@vger.kernel.org, Paolo Abeni , Pengutronix Kernel Team , Sascha Hauer , Vinod Koul Subject: Re: [PATCH RFC net-next 5/9] net: stmmac: qcom-ethqos: move loopback disable to .mac_finish() Message-ID: References: Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE3MDE1MiBTYWx0ZWRfX1S6w3TYEtRqv shK07kn73UvkBzC2qEPt3eBalbfW2cDcr6mL7fnONy/zOj2YEArSRJX9HTPyZwAITv2rQxRpX9S RnSUBldx0DQHCJFagUBsvpl4ds7rjCngX6ro7acN8UaWZDBTvmk+/30+6V4Q5j9c9FcOKYw6ahx K1PkxE7jfbr9fo0WQmj2HTrETqYBdU97eR61IqE2/v5HHtAFF6Gs7fH1gbV3TnEO8w8O3yz86P0 7QUzebyMOzupiTmE/kIWiwtmPyJbcb/UVqBu9ZO2TmRk9dGMrj+Ag6qsdyxpG5e3d/dU9cbkT7n i5+iGrtJWRFfBw83S5RD3nwXxB3MQ+TbuXAVZETipAgtNhuW/h7JcbXt1UOZDcA9fAcWKRdGCOB KBiooTql8ooKEAzfnMCFIRhnBZRoujqkuisULxcIP2ddf7uE2eH5ljIEoI8FBY6pUmUPJQNnKQl RTYSGaDLVCq34StaFoA== X-Authority-Analysis: v=2.4 cv=Y6b1cxeN c=1 sm=1 tr=0 ts=6994b598 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=kj9zAlcOel0A:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=PHq6YzTAAAAA:8 a=EUspDBNiAAAA:8 a=wi4T-LJhgm9Wf8MEqCEA:9 a=CjuIK1q_8ugA:10 a=1OuFwYUASf3TG4hYMiVC:22 a=ZKzU8r6zoKMcqsNulkmm:22 X-Proofpoint-GUID: pGUaW7V_njEmLXfetL1a-3eZ1Dl_yk5c X-Proofpoint-ORIG-GUID: pGUaW7V_njEmLXfetL1a-3eZ1Dl_yk5c X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-17_03,2026-02-16_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 adultscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602170152 On Thu, Feb 12, 2026 at 12:18:06AM +0000, Russell King (Oracle) wrote: > Loopback is enabled to allow the dwmac soft reset to succeed. This > is enabled when clocks are enabled in ethqos_clks_config(), which > happens at driver probe and runtime PM resume - e.g. when the > network device is administratively brought up. > > Currently, the loopback is disabled when the link comes up (via > .mac_link_up() calling this driver's .fix_mac_speed().) > > Move the qcom_ethqos_set_sgmii_loopback() call which disables > loopback from ethqos_fix_mac_speed() into ethqos' SerDes specific > .mac_finish() method so that loopback is disabled a little earlier > after reset has completed, and dwmac setup has completed. > > Signed-off-by: Russell King (Oracle) Reviewed-by: Mohd Ayaan Anwar Ayaan