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{ "id": 2196236, "url": "http://patchwork.ozlabs.org/api/covers/2196236/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-aspeed/cover/20260213-pinctrl-single-bit-v1-0-c60f2fb80efb@aspeedtech.com/", "project": { "id": 57, "url": "http://patchwork.ozlabs.org/api/projects/57/?format=api", "name": "Linux ASPEED SoC development", "link_name": "linux-aspeed", "list_id": "linux-aspeed.lists.ozlabs.org", "list_email": "linux-aspeed@lists.ozlabs.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260213-pinctrl-single-bit-v1-0-c60f2fb80efb@aspeedtech.com>", "list_archive_url": null, "date": "2026-02-13T08:17:41", "name": "[RFC,0/2] pinctrl: add syscon-backed packed-field pinctrl driver and DT bindings", "submitter": { "id": 80235, "url": "http://patchwork.ozlabs.org/api/people/80235/?format=api", "name": "Billy Tsai", "email": "billy_tsai@aspeedtech.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-aspeed/cover/20260213-pinctrl-single-bit-v1-0-c60f2fb80efb@aspeedtech.com/mbox/", "series": [ { "id": 492066, "url": "http://patchwork.ozlabs.org/api/series/492066/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-aspeed/list/?series=492066", "date": "2026-02-13T08:17:43", "name": "pinctrl: add syscon-backed packed-field pinctrl driver and DT bindings", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492066/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2196236/comments/", "headers": { "Return-Path": "\n <linux-aspeed+bounces-3514-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-aspeed@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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Fri, 13 Feb 2026 19:18:12 +1100 (AEDT)", "from TWMBX01.aspeed.com (192.168.0.62) by TWMBX01.aspeed.com\n (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Fri, 13 Feb\n 2026 16:17:55 +0800", "from [127.0.1.1] (192.168.10.13) by TWMBX01.aspeed.com\n (192.168.0.62) with Microsoft SMTP Server id 15.2.1748.10 via Frontend\n Transport; Fri, 13 Feb 2026 16:17:55 +0800" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1770970694;\n\tcv=none;\n b=B0qM4hmCXFrA7fSVI+Qi5KJYyTYIFL5zb63/ULdXxKWQLqlj9JGIqkT7QIoKLvAF/DjDPXhOL/W0caKoFIll5NNIbmKlLKzwNqNSCfcFSU5uMVIk7L6o5WYVPWMPItrp+GJQ/mElWrU6jJ1pQnOCMnL5en6YGoyk7ckcG6sbdIe8AJFgE/ZsGF+CSWNljX1RvRQNCSEPGxtZ39FP+H0MEbq3QhH1qwoF1p+6I3m79z3jlDTXq4Weg+B5TNl3MNgF4VoNYlJJlhh0gTX7r7Cf8fWJLVaL6x9CLef9bbew67qUQO6L3+wOroI9OC2sNuXhyFebXAXIupUGErqhSYODsA==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1770970694; c=relaxed/relaxed;\n\tbh=M8dnnrrcEDHnIimVUAM15GI9TwFy54Eqb719DGpYZB0=;\n\th=From:Subject:Date:Message-ID:MIME-Version:Content-Type:To:CC;\n b=PNA8F9BNVou16ETsXDTp/dP4p84pj1jgYqVRt32Q5tYMUWPGeFKN37P2KYpECPwQw7py/BmBKcnm6oNAK9lXf4g6gpvuSXU85MZu/ryKyXEdzO0pf3H0W7NibZ+O0tME2+WWGj6qIchNyQr7hPxs+cjXMRL9oe+ql6qKDOYwEJ3w2dNkaN9NYix/9Pp50I4ywD03/n3me9q3Cc6OtqjP+ErFKtpOhj8wszjhrLIFHMXGtrADVeqdbw5D4Y88zBO5RdtHuiDRCPHde68ePHR66KIIh+MqdxRhX572mFLiNlcnr6ibOjL4PnUnMNKaFH0y3jMpZJKNECAGj2Io4k176Q==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com;\n spf=pass (client-ip=211.20.114.72; helo=twmbx01.aspeed.com;\n envelope-from=billy_tsai@aspeedtech.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=aspeedtech.com", "From": "Billy Tsai <billy_tsai@aspeedtech.com>", "Subject": "[PATCH RFC 0/2] pinctrl: add syscon-backed packed-field pinctrl\n driver and DT bindings", "Date": "Fri, 13 Feb 2026 16:17:41 +0800", "Message-ID": "<20260213-pinctrl-single-bit-v1-0-c60f2fb80efb@aspeedtech.com>", "X-Mailing-List": "linux-aspeed@lists.ozlabs.org", "List-Id": "<linux-aspeed.lists.ozlabs.org>", "List-Help": "<mailto:linux-aspeed+help@lists.ozlabs.org>", "List-Owner": "<mailto:linux-aspeed+owner@lists.ozlabs.org>", "List-Post": "<mailto:linux-aspeed@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linux-aspeed/>,\n <https://lists.ozlabs.org/pipermail/linux-aspeed/>", "List-Subscribe": "<mailto:linux-aspeed+subscribe@lists.ozlabs.org>,\n <mailto:linux-aspeed+subscribe-digest@lists.ozlabs.org>,\n <mailto:linux-aspeed+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linux-aspeed+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "X-B4-Tracking": "v=1; b=H4sIACXejmkC/x3MwQpAQBCA4VfRnE3ZEeGqPICrHNgdTGlpV1Lad\n 7c5fof/f8GzE/bQJC84vsXLYSNUmoDeJrsyiokGyqjMSCk8xerL7ejFrjvjLBeaiVS+UEW6LiC\n Gp+NFnn86QN+1MIbwAdRy5kxpAAAA", "X-Change-ID": "20260211-pinctrl-single-bit-da213f282c95", "To": "Linus Walleij <linusw@kernel.org>, Tony Lindgren <tony@atomide.com>, \"Rob\n Herring\" <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, \"Conor\n Dooley\" <conor+dt@kernel.org>, Joel Stanley <joel@jms.id.au>, Andrew Jeffery\n\t<andrew@codeconstruct.com.au>, Bartosz Golaszewski <brgl@kernel.org>", "CC": "<patrickw3@meta.com>, <linux-gpio@vger.kernel.org>,\n\t<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,\n\t<linux-arm-kernel@lists.infradead.org>, <linux-aspeed@lists.ozlabs.org>,\n\t<BMC-SW@aspeedtech.com>, Billy Tsai <billy_tsai@aspeedtech.com>", "X-Mailer": "b4 0.14.3", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1770970675; l=2131;\n i=billy_tsai@aspeedtech.com; s=20251118; h=from:subject:message-id;\n bh=GyucnYRddM+KPEwtfmXcesurg0IS8btBZhDNqZcs91M=;\n b=wnr8PkYCiaj6qIxDNo2bobprHQFZzxKZe4ITj4bP2A7etp7tWDxgaI1FFV0ZkCF8v/Mzh9EvQ\n i9jFMJZ6T+wBt80YTsSiVUTiqGAEBSJYEh8C4XVx4HGcMDlWw2KJ+jV", "X-Developer-Key": "i=billy_tsai@aspeedtech.com; a=ed25519;\n pk=/A8qvgZ6CPfnwKgT6/+k+nvXOkN477MshEGJvVdzeeQ=", "X-Spam-Status": "No, score=0.0 required=5.0 tests=SPF_HELO_FAIL,SPF_PASS\n\tautolearn=disabled version=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "This work follows earlier review discussions around extending\npinctrl-single for bit-per-mux / packed-field controllers. Based on\nfeedback from Linus Walleij and Tony Lindgren, the direction was changed\ntowards introducing a separate targeted driver instead of further\nincreasing the complexity of pinctrl-single.\n\nThe prior pinctrl-single series is at:\nhttps://lore.kernel.org/all/20260123-upstream_pinctrl_single-v2-0-40f8063cc5a2@aspeedtech.com/\n\nThis series is a replacement of that approach., targeted pinctrl driver\nfor controllers where pinmux and/or pin configuration are represented as\nfixed-width fields packed sequentially within shared registers\n(packed-field / bit-per-pin style controllers).\n\nAlthough pinctrl-single contains support for some bit-per-mux use cases,\nit was originally designed around direct MMIO ownership and has grown\nin complexity over time. For SoCs where the pin controller lives inside\na larger SCU/syscon register block, using syscon + regmap-mmio provides\na clearer ownership model and naturally avoids MMIO resource conflicts.\n\nThe new driver is designed to be instantiated as a subnode of a syscon\ndevice (e.g. SCU). It obtains a regmap from the parent and uses the\nchild node 'reg' as a window into the syscon register space.\n\nThis series includes:\n 1. A generic Devicetree binding for packed-field pin controllers.\n 2. The new pinctrl-packed driver (derived from pinctrl-single).\n\nSigned-off-by: Billy Tsai <billy_tsai@aspeedtech.com>\n---\nBilly Tsai (2):\n dt-bindings: pinctrl: Add pinctrl-packed\n pinctrl: add syscon-backed packed-field pin controller driver\n\n .../bindings/pinctrl/pinctrl-packed.yaml | 166 +++\n drivers/pinctrl/Kconfig | 13 +\n drivers/pinctrl/Makefile | 1 +\n drivers/pinctrl/pinctrl-packed.c | 1168 ++++++++++++++++++++\n 4 files changed, 1348 insertions(+)\n---\nbase-commit: ea24857a76ad90632f86f1e8c8465f96c9f2e407\nchange-id: 20260211-pinctrl-single-bit-da213f282c95\n\nBest regards," }