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Thu, 6 Jun 2024 09:16:16 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20240606091616epsmtrp1cf324bd16ddeb63e9659d90ec2a81c32~WX48lLBh52458024580epsmtrp1w; Thu, 6 Jun 2024 09:16:16 +0000 (GMT) X-AuditID: b6c32a4b-8afff70000002733-19-666183481fa8 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 9E.89.08336.06E71666; Thu, 6 Jun 2024 18:16:16 +0900 (KST) Received: from FDSFTE596 (unknown [107.122.82.131]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20240606091612epsmtip17f4f85cdc23f67a787eeaf619af8fe2d~WX45BtATA0216002160epsmtip1U; Thu, 6 Jun 2024 09:16:12 +0000 (GMT) From: "Swathi K S" To: "'Andrew Lunn'" , "'Sriranjani P'" Cc: , , , , , , , , , , , , , , , , , , , , "'Chandrasekar R'" , "'Suresh Siddha'" In-Reply-To: Subject: RE: [PATCH v3 2/4] net: stmmac: dwc-qos: Add FSD EQoS support Date: Thu, 6 Jun 2024 14:46:11 +0530 Message-ID: <000401dab7f2$2ee2b8f0$8ca82ad0$@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQG0kE2cByMDcfrFjxkR49X5VWx9JAI1Xm+tAnXeS/UB6i7tpbHG4X3w Content-Language: en-in X-Brightmail-Tracker: H4sIAAAAAAAAA02Te0xTVxzHd2/bewvS5Y6HHEgY7O4lJECrtJ6q6IwEL4MQEsPYxKw29FIY faW3bMNlmXODBMLTRMaaCqRRllVwWsqrPESeQxC6KShOTAGZoIJMkQwcutILG/99zvf8ft/f +Z6Tw+d4F+GB/EyNgdZr5CoS8+Q2dofuCKe+k6cLjbci4MpcOQKdlY0YHJno4sDa9mEUmka+ 58KqnmEenOmbwuE98wIPFs9OcqCjsZgHrdNjPDj5MAXesJswWDHSgcLKtToe7KveDpcHHyPQ 3LCEw8nFNhwaHc082DM0y4G57T04NDureR/4U7afx1FqpqQBp1qMEzhVbc2mrJZ8jLo71oZR 9ee+oVqan6HUk45RjCq2WRDKduUZQr08dRannlnfTBIczdqXQcsVtD6E1qRpFZkaZTQZf0R2 SCaWCEXhIincTYZo5Go6moxJSAqPzVS5opMhn8tV2S4pSc4wZOT+fXpttoEOydAyhmiS1ilU uihdBCNXM9kaZYSGNuwRCYU7xa7C41kZg+OXUd2q4Mu6vKvck4h9WwHiwQdEFCgcuY2uszfR ioCGV0dZfoqAwZnkAsTTxcsIqHT8xt1scNxs47Eb7QgYGprnsotZBLy69NJthRFhwFzcga+z L3EE3BlscDOHKOKB2+fdNR7EXlD11x9uVx8iFlQ7yt3MJd4B9Z2jnHUWEFJw92Itl+U3wMCP 97msTzBomjdx2BOFgJWZGh47KxbccvyAsDX+oHelcKOm2wP0WiDLMWB44J8N3Qc87LfhLAeC uZK8DZaBC8WjG4kzwMRqGcbyAdB50+TS+S7/UPCLPZKVg8CZaxdRduzroOjFfZTVBaC5cpPf BmuPxjYsA0Dj+Sd4KUIatyQzbklm3JLA+P+0aoRrQQJoHaNW0oxYt0tDf/Hfc6dp1VbE/S/C 4puRKediRBeC8pEuBPA5pK8gkZGlewsU8pwTtF4r02eraKYLEbuuu4wT6JemdX0sjUEmipIK oyQSSZR0l0RE+gse5Z5VeBNKuYHOomkdrd/sQ/kegSdRy8HXarxeXPhq6c7ARHyPj2a7b0UL /33l9Ss3PrYzz9M7eO1Pdd+GXQXS0vH+ORvVveCll/10oCG6ZVw9mth67TRWN9+P5C7ZyTzO cor/sQJl6vF3T1umxF6Pp/NVFYFFObr4Q3H3nvdNw9TUhTjPD7ETD/KvG3bv8Wl7L21I2xZe e05cvwNKzQ9qnK3KkuC1sl8TCoV9CV9fUjWFp2FNfMXeT0/5fLJ4uPXYZ+ntJsFHTvRwR/Cq bSy/s2pRkJxD+jntQSvbhvz4WGhccHlkb2KAOsf5Z4yXnpCgb0nrpkyO4GQcLbWO/X1w59rv l4P8PSan+/abcwjcNDmeEqAiuUyGXBTG0TPyfwF9OF4PoAQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA02SfUzMcRzHfX/PnR0/d9S3EDvPmass822smWG/mWdLnvObfkUP1+1OyEMq NA85eUwnOaHUla3rOleS5ESx7jZ1tB5IIhSRspBxHdN/r+39+rz3/uPD4JKfhAezXbFDUCn4 SBklIkz3ZZ4ztsTxoT5ZehHqe3ceoJcZJgpZmypwlHenBkPp1kMEumypIVFb5SsaNWd+JJGm vQVHNpOGRIZWO4la3gehpyXpFLpgLcNQRn8+iSp1rqj3cQdAmUVfadTSVUojrc1MIsuTdhwd vmOhUUPHTRJlvtSR8yBnzKnHuLaTRTRXrG2iOZ0hhjPkHqW4RnspxRVeO8AVm7sx7lNZHcVp jLmAM97tBtyvxEs0123wXCFeL5obIkRu3ymovAO2iLY9ri/AlN/Fu/OT7hHxoGToMeDCQNYP 2mpLyWNAxEjY2wDWv7ABZ+AOvxw8RzpZCnN+vaWd0hsAm+09AwHFesFMTRnt4JHsaphouEI4 JJy9SsI6nZlyXnQBWF56gXJYLuwcePlzA+FgKbsI6mznB5hgJ8LC8jrcwWLWHzbezCOcPAJW pb3+w8yfVjlMKhhYh7Pj4K3OdNy5bjzsa8sinSMWwWe21L+OG3zQl4ynAKl2UJP2f5N2UJN2 0IUOELnAXVCqo8Ki1L5KX4WwS67mo9QxijD51ugoAxh4EK9pZnArt0teATAGVADI4LKR4mXq 4FCJOISP3SOoooNVMZGCugKMZgiZm9it/USIhA3jdwgRgqAUVP9SjHHxiMeWvzXVJ/w4w9Q9 bF42qqC28rQ0sfBRtVThF06Ke4/6lHjOsm8cuuLSlOEH0qbPT5EvNutXtk0oqh7i2iqfPJtp PvwA740r9ru49Ij1XcNUhHln+0TkGze+yFs640nWs+mB0UGVTTO1J5pWPk/NSthnXtIYpF/r rmfYNf6NF0f0J3vz8fOTe7Dbxjio3EN/2+D7nR+TXN3vYSxcHmjZfP96ultsQY59Q/fYpFTr mFp/Q/Y1SZwmP0XqOnb/8fLZ2OpT4QEdhjzJwoxNAQnrNi88q/g898biNH1Q9iRb0t7ED4qd 4yyzTD9Qq6TnOv1qWGdV6IKI8HudgasU5XRVyKdHwTWxMkK9jff1wlVq/jd7aMISjwMAAA== X-CMS-MailID: 20240606091616epcas5p4806885e4893357ddf8d231ae045a5efc X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20230814112612epcas5p275cffb4d3dae86c6090ca246083631c4 References: <20230814112539.70453-1-sriranjani.p@samsung.com> <20230814112539.70453-3-sriranjani.p@samsung.com> > -----Original Message----- > From: Andrew Lunn [mailto:andrew@lunn.ch] > Sent: 15 August 2023 02:17 > To: Sriranjani P > Cc: davem@davemloft.net; edumazet@google.com; kuba@kernel.org; > pabeni@redhat.com; robh+dt@kernel.org; > krzysztof.kozlowski+dt@linaro.org; conor+dt@kernel.org; > richardcochran@gmail.com; alexandre.torgue@foss.st.com; > joabreu@synopsys.com; mcoquelin.stm32@gmail.com; > alim.akhtar@samsung.com; linux-fsd@tesla.com; > pankaj.dubey@samsung.com; swathi.ks@samsung.com; > ravi.patel@samsung.com; netdev@vger.kernel.org; > devicetree@vger.kernel.org; linux-kernel@vger.kernel.org; linux-samsung- > soc@vger.kernel.org; linux-arm-kernel@lists.infradead.org; Chandrasekar R > ; Suresh Siddha > Subject: Re: [PATCH v3 2/4] net: stmmac: dwc-qos: Add FSD EQoS support > > > +static const int rx_clock_skew_val[] = {0x2, 0x0}; > > > +static int dwc_eqos_setup_rxclock(struct platform_device *pdev, int > > +ins_num) { > > + struct device_node *np = pdev->dev.of_node; > > + struct regmap *syscon; > > + unsigned int reg; > > + > > + if (np && of_property_read_bool(np, "fsd-rx-clock-skew")) { > > + syscon = syscon_regmap_lookup_by_phandle_args(np, > > + "fsd-rx-clock- > skew", > > + 1, ®); > > + if (IS_ERR(syscon)) { > > + dev_err(&pdev->dev, > > + "couldn't get the rx-clock-skew syscon!\n"); > > + return PTR_ERR(syscon); > > + } > > + > > + regmap_write(syscon, reg, rx_clock_skew_val[ins_num]); > > Please could you explain what this is doing. As per customer requirement, we need to provide a delay of 2ns in FSYS in both TX and RX path and no delay in peric block > > Andrew Regards, Swathi