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GET /api/patches/2220122/?format=api
{ "id": 2220122, "url": "http://patchwork.ozlabs.org/api/patches/2220122/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260406124559.2481344-1-s-vadapalli@ti.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260406124559.2481344-1-s-vadapalli@ti.com>", "list_archive_url": null, "date": "2026-04-06T12:45:57", "name": "net: phy: dp83867: default to 2ns delay if unspecified in device-tree", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c32c11cbdaf103bc99a65078866a309a2a3e0908", "submitter": { "id": 84157, "url": "http://patchwork.ozlabs.org/api/people/84157/?format=api", "name": "Siddharth Vadapalli", "email": "s-vadapalli@ti.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260406124559.2481344-1-s-vadapalli@ti.com/mbox/", "series": [ { "id": 498849, "url": "http://patchwork.ozlabs.org/api/series/498849/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=498849", "date": "2026-04-06T12:45:57", "name": "net: phy: dp83867: default to 2ns delay if unspecified in device-tree", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498849/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2220122/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2220122/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256\n header.s=selector1 header.b=XF85i0tR;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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helo=flwvzet201.ext.ti.com; pr=C", "From": "Siddharth Vadapalli <s-vadapalli@ti.com>", "To": "<jerome.forissier@arm.com>, <trini@konsulko.com>", "CC": "<u-boot@lists.denx.de>, <srk@ti.com>, <s-vadapalli@ti.com>", "Subject": "[PATCH] net: phy: dp83867: default to 2ns delay if unspecified in\n device-tree", "Date": "Mon, 6 Apr 2026 18:15:57 +0530", "Message-ID": "<20260406124559.2481344-1-s-vadapalli@ti.com>", "X-Mailer": "git-send-email 2.51.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-C2ProcessedOrg": "333ef613-75bf-4e12-a4b1-8e3623f5dcea", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "BN3PEPF0000B36D:EE_|SJ5PPF9BA2D2998:EE_", "X-MS-Office365-Filtering-Correlation-Id": "2df3807d-939b-41d5-eb1f-08de93da2a6d", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;\n ARA:13230040|1800799024|82310400026|36860700016|376014|18002099003|56012099003;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:198.47.21.195; 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Ip=[198.47.21.195];\n Helo=[flwvzet201.ext.ti.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n BN3PEPF0000B36D.namprd21.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "SJ5PPF9BA2D2998", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "Since Linux commit c360eb0c3ccb (\"dt-bindings: net: ethernet-controller:\nAdd informative text about RGMII delays\"), the interpretation of RGMII\ndelays has changed. Prior to the commit, the RGMII Variant among \"rgmii\",\n\"rgmii-id\", \"rgmii-rxid\" and \"rgmii-txid\" clearly specified whether it is\nthe MAC or the PHY that \"should\" add the delay. However, post that commit,\nthe RGMII Variant only specifies whether or not there is a delay on the\nPCB traces between the MAC and the PHY, leaving it open as to who adds the\ndelay.\n\nHence, instead of enforcing the existence of the device-tree properties\n\"ti,rx-internal-delay\" and \"ti,tx-internal-delay\", default to a delay\nof 2ns, while continuing to override this delay with the aforementioned\nproperties, if they exist in the device-tree.\n\nThis is in line with the Linux driver implementation updated by commit\n6bf78849371d (\"net: phy: dp83867: use 2ns delay if not specified in DTB\").\n\nSigned-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>\n---\n\nHello,\n\nThis patch is based on commit\n47e064f1317 Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sh\nof the master branch of U-Boot.\n\nThis patch fixes Ethernet issues on AM62D2-EVM with the DP83867 Ethernet PHY.\nAlthough all platforms using the DP83867 Ethernet PHY have switched from \"rgmii-rxid\"\nto \"rgmii-id\" in the device-tree, they haven't faced any issues due to the\n\"ti,rx-internal-delay\" property being retained. For AM62D2 however, the device-tree\nhad \"rgmii-id\" specified as the phy-mode from the start, as a result of which, the\ndelay was never specified. This issue has been handled in Linux by an update to the DP83867\ndriver as mentioned in the commit message above. A similar update is required for U-Boot as\nwell, which is being implemented by this patch.\n\nPatch has been tested on AM62D2-EVM (using 'rgmii-id' and doesn't have the delay property)\nand on J7200-EVM (using 'rgmii-id' but has the delay property).\nAM62D2 Logs:\nhttps://gist.github.com/Siddharth-Vadapalli-at-TI/230497066b1f746e074ea230e9d10fdd\nJ7200 Logs:\nhttps://gist.github.com/Siddharth-Vadapalli-at-TI/bc55607aedffa9a51df4e3557298ff92\n\nRegards,\nSiddharth.\n\n drivers/net/phy/dp83867.c | 16 ++++------------\n 1 file changed, 4 insertions(+), 12 deletions(-)", "diff": "diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c\nindex 772cde1c520..0f0b5352eef 100644\n--- a/drivers/net/phy/dp83867.c\n+++ b/drivers/net/phy/dp83867.c\n@@ -203,32 +203,24 @@ static int dp83867_of_init(struct phy_device *phydev)\n \t\t\t\t\"Should be 'rgmii-id' to use internal delays\\n\");\n \t}\n \n-\t/* RX delay *must* be specified if internal delay of RX is used. */\n+\tdp83867->rx_id_delay = DP83867_RGMIIDCTL_2_00_NS;\n \tif (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||\n \t phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {\n \t\tret = ofnode_read_u32(node, \"ti,rx-internal-delay\",\n \t\t\t\t &dp83867->rx_id_delay);\n-\t\tif (ret) {\n-\t\t\tpr_debug(\"ti,rx-internal-delay must be specified\\n\");\n-\t\t\treturn ret;\n-\t\t}\n-\t\tif (dp83867->rx_id_delay > DP83867_RGMII_RX_CLK_DELAY_MAX) {\n+\t\tif (!ret && dp83867->rx_id_delay > DP83867_RGMII_RX_CLK_DELAY_MAX) {\n \t\t\tpr_debug(\"ti,rx-internal-delay value of %u out of range\\n\",\n \t\t\t\t dp83867->rx_id_delay);\n \t\t\treturn -EINVAL;\n \t\t}\n \t}\n \n-\t/* TX delay *must* be specified if internal delay of RX is used. */\n+\tdp83867->tx_id_delay = DP83867_RGMIIDCTL_2_00_NS;\n \tif (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||\n \t phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {\n \t\tret = ofnode_read_u32(node, \"ti,tx-internal-delay\",\n \t\t\t\t &dp83867->tx_id_delay);\n-\t\tif (ret) {\n-\t\t\tdebug(\"ti,tx-internal-delay must be specified\\n\");\n-\t\t\treturn ret;\n-\t\t}\n-\t\tif (dp83867->tx_id_delay > DP83867_RGMII_TX_CLK_DELAY_MAX) {\n+\t\tif (!ret && dp83867->tx_id_delay > DP83867_RGMII_TX_CLK_DELAY_MAX) {\n \t\t\tpr_debug(\"ti,tx-internal-delay value of %u out of range\\n\",\n \t\t\t\t dp83867->tx_id_delay);\n \t\t\treturn -EINVAL;\n", "prefixes": [] }