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GET /api/patches/2230769/?format=api
{ "id": 2230769, "url": "http://patchwork.ozlabs.org/api/patches/2230769/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260430024945.3413973-2-wei.fang@nxp.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260430024945.3413973-2-wei.fang@nxp.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260430024945.3413973-2-wei.fang@nxp.com/", "date": "2026-04-30T02:49:31", "name": "[v5,net-next,01/15] dt-bindings: net: dsa: update the description of 'dsa,member' property", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "9939d2144e27fca37e83e2dd5b4422d3ed1e6dc1", "submitter": { "id": 84380, "url": "http://patchwork.ozlabs.org/api/people/84380/?format=api", "name": "Wei Fang", "email": "wei.fang@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260430024945.3413973-2-wei.fang@nxp.com/mbox/", "series": [ { "id": 502180, "url": "http://patchwork.ozlabs.org/api/series/502180/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502180", "date": "2026-04-30T02:49:30", "name": "Add preliminary NETC switch support for i.MX94", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/502180/mbox/" } ], "comments": 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envelope-from=wei.fang@nxp.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=nxp.com", "i=1; mx.microsoft.com 1; spf=pass\n smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass\n header.d=nxp.com; arc=none" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=1QIpneJD6m/S/80aesbxQwAdUvv860RySfeuq8k7Lt4=;\n b=bIQFshSIfF1WKL6lcJkELCDtelxzDHFYg09pVCoHTWn4paqBOe80AFPhcX6rLNczIOBrqm6XGhTxr32Uy3LpuW6WUVF/Msxgys77loDlKvPui6JMJMI+8GGJDD87M/TOzMaHrEZKFAduO/xu5upHkBOrLgzOIL5odxr8VKW0Vaf2cc5gb+WkoYFME9FTneIEhwRCNMwbU8ht0aRHqhHYlgOYRM8N7IZZ9BYWphcbjTnGJ5M+wSBf5iKrWmdVZcc0Qhs6eH/E0wdKji5PFAbdH+rIHu8V1E9k1nOStmZ0A428jUzHUOnqdjZVPyvS1o1s+675OceACK5NghH/Gd3WZg==", "From": "Wei Fang <wei.fang@nxp.com>", "To": "claudiu.manoil@nxp.com,\n\tvladimir.oltean@nxp.com,\n\txiaoning.wang@nxp.com,\n\tandrew+netdev@lunn.ch,\n\tdavem@davemloft.net,\n\tedumazet@google.com,\n\tkuba@kernel.org,\n\tpabeni@redhat.com,\n\trobh@kernel.org,\n\tkrzk+dt@kernel.org,\n\tconor+dt@kernel.org,\n\tf.fainelli@gmail.com,\n\tfrank.li@nxp.com,\n\tchleroy@kernel.org,\n\thorms@kernel.org,\n\tlinux@armlinux.org.uk", "Cc": "netdev@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tdevicetree@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\timx@lists.linux.dev", "Subject": "[PATCH v5 net-next 01/15] dt-bindings: net: dsa: update the\n description of 'dsa,member' property", "Date": "Thu, 30 Apr 2026 10:49:31 +0800", "Message-Id": "<20260430024945.3413973-2-wei.fang@nxp.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260430024945.3413973-1-wei.fang@nxp.com>", "References": "<20260430024945.3413973-1-wei.fang@nxp.com>", "Content-Transfer-Encoding": "8bit", 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(2024-03-25) on lists.ozlabs.org" }, "content": "The current description indicates that the 'dsa,member' property cannot\nbe set for a switch that is not part of any cluster. Vladimir thinks\nthat this is a case where the actual technical limitation was poorly\ntransposed into words when this restriction was first documented, in\ncommit 8c5ad1d6179d (\"net: dsa: Document new binding\").\n\nThe true technical limitation is that many DSA tagging protocols are\ntopology-unaware, and always call dsa_conduit_find_user() with a\nswitch_id of 0. Specifying a custom \"dsa,member\" property with a\nnon-zero switch_id would break them.\n\nTherefore, for topology-aware switches, it is fine to specify this\nproperty for them, even if they are not part of any cluster. Our NETC\nswitch is a good example which is topology-aware, the switch_id is\ncarried in the switch tag, but the switch_id 0 is reserved for VEPA\nswitch and cannot be used, so we need to use this property to assign\na non-zero switch_id for it.\n\nSuggested-by: Vladimir Oltean <vladimir.oltean@nxp.com>\nSigned-off-by: Wei Fang <wei.fang@nxp.com>\nAcked-by: Rob Herring (Arm) <robh@kernel.org>\n---\n Documentation/devicetree/bindings/net/dsa/dsa.yaml | 6 +++++-\n 1 file changed, 5 insertions(+), 1 deletion(-)", "diff": "diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.yaml b/Documentation/devicetree/bindings/net/dsa/dsa.yaml\nindex 2abd036578d1..801e1411e5c2 100644\n--- a/Documentation/devicetree/bindings/net/dsa/dsa.yaml\n+++ b/Documentation/devicetree/bindings/net/dsa/dsa.yaml\n@@ -28,7 +28,11 @@ properties:\n A two element list indicates which DSA cluster, and position within the\n cluster a switch takes. <0 0> is cluster 0, switch 0. <0 1> is cluster 0,\n switch 1. <1 0> is cluster 1, switch 0. A switch not part of any cluster\n- (single device hanging off a CPU port) must not specify this property\n+ (single device hanging off a CPU port) does not usually need to specify\n+ this property, and then it becomes cluster 0, switch 0. For a topology\n+ aware switch, its switch index can be specified through this property,\n+ even if it is not part of any cluster. Also, topology-unaware switches\n+ must always be defined as index 0 of their cluster.\n $ref: /schemas/types.yaml#/definitions/uint32-array\n \n additionalProperties: true\n", "prefixes": [ "v5", "net-next", "01/15" ] }