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GET /api/1.0/patches/2175859/?format=api
{ "id": 2175859, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2175859/?format=api", "project": { "id": 35, "url": "http://patchwork.ozlabs.org/api/1.0/projects/35/?format=api", "name": "Linux I2C development", "link_name": "linux-i2c", "list_id": "linux-i2c.vger.kernel.org", "list_email": "linux-i2c@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20251219-i2c-reset-v2-2-ad201a602e74@gmail.com>", "date": "2025-12-19T07:42:21", "name": "[v2,2/3] i2c: k1: add reset support", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "f037923951f57e7349e521b50c5b2bfd17d2dc04", "submitter": { "id": 92113, "url": "http://patchwork.ozlabs.org/api/1.0/people/92113/?format=api", "name": "Encrow Thorne", "email": "jyc0019@gmail.com" }, "delegate": { "id": 149066, "url": "http://patchwork.ozlabs.org/api/1.0/users/149066/?format=api", "username": "cazzacarna", "first_name": "Andi", "last_name": "Shyti", "email": "andi.shyti@kernel.org" }, "mbox": "http://patchwork.ozlabs.org/project/linux-i2c/patch/20251219-i2c-reset-v2-2-ad201a602e74@gmail.com/mbox/", "series": [ { "id": 485959, "url": "http://patchwork.ozlabs.org/api/1.0/series/485959/?format=api", "date": "2025-12-19T07:42:19", "name": "i2c: spacemit: add reset support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/485959/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2175859/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-i2c+bounces-14652-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-i2c@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20230601 header.b=EOEABHYl;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20251219-i2c-reset-v2-2-ad201a602e74@gmail.com>", "References": "<20251219-i2c-reset-v2-0-ad201a602e74@gmail.com>", "In-Reply-To": "<20251219-i2c-reset-v2-0-ad201a602e74@gmail.com>", "To": "Troy Mitchell <troy.mitchell@linux.spacemit.com>,\n Andi Shyti <andi.shyti@kernel.org>, Rob Herring <robh@kernel.org>,\n Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@gentoo.org>,\n Philipp Zabel <p.zabel@pengutronix.de>, Paul Walmsley <pjw@kernel.org>,\n Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>,\n Alexandre Ghiti <alex@ghiti.fr>", "Cc": "Troy Mitchell <troymitchell988@gmail.com>,\n Guodong Xu <guodong@riscstar.com>, linux-i2c@vger.kernel.org,\n devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,\n spacemit@lists.linux.dev, linux-kernel@vger.kernel.org,\n Encrow Thorne <jyc0019@gmail.com>", "X-Mailer": "b4 0.14.3", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1766130147; l=1515;\n i=jyc0019@gmail.com; s=20251009; h=from:subject:message-id;\n bh=Ynzt5v58obwnhda42H/gajIJVLz4GWJg6Tg2WmflUX4=;\n b=qMfQlZSVzRGvXZdg3oEioN5Cn5Xm2J1x59daHMj1raOdC0lTKCnZqnLoQeM/xYyg7eq3aQSEi\n yhbHPR9x9ooAJ1+wCoS5U5WsMyorqPVeBT+RjAIOxX0vOoHqgDQp5hl", "X-Developer-Key": "i=jyc0019@gmail.com; a=ed25519;\n pk=nnjLv04DUE0FXih6IcJUOjWFTEoo4xYQOu7m5RRHvZ4=" }, "content": "The K1 I2C controller provides a reset line that needs to be deasserted\nbefore the controller can be accessed.\n\nAdd reset support to the driver to ensure the controller starts in the\nrequired state.\n\nSigned-off-by: Encrow Thorne <jyc0019@gmail.com>\n---\n drivers/i2c/busses/i2c-k1.c | 7 +++++++\n 1 file changed, 7 insertions(+)", "diff": "diff --git a/drivers/i2c/busses/i2c-k1.c b/drivers/i2c/busses/i2c-k1.c\nindex d42c03ef5db5..23661c7ddb67 100644\n--- a/drivers/i2c/busses/i2c-k1.c\n+++ b/drivers/i2c/busses/i2c-k1.c\n@@ -10,6 +10,7 @@\n #include <linux/module.h>\n #include <linux/of_address.h>\n #include <linux/platform_device.h>\n+ #include <linux/reset.h>\n \n /* spacemit i2c registers */\n #define SPACEMIT_ICR\t\t 0x0\t\t/* Control register */\n@@ -534,6 +535,7 @@ static int spacemit_i2c_probe(struct platform_device *pdev)\n \tstruct device *dev = &pdev->dev;\n \tstruct device_node *of_node = pdev->dev.of_node;\n \tstruct spacemit_i2c_dev *i2c;\n+\tstruct reset_control *rst;\n \tint ret;\n \n \ti2c = devm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);\n@@ -578,6 +580,11 @@ static int spacemit_i2c_probe(struct platform_device *pdev)\n \tif (IS_ERR(clk))\n \t\treturn dev_err_probe(dev, PTR_ERR(clk), \"failed to enable bus clock\");\n \n+\trst = devm_reset_control_get_optional_exclusive_deasserted(dev, NULL);\n+\tif (IS_ERR(rst))\n+\t\treturn dev_err_probe(dev, PTR_ERR(rst),\n+\t\t\t\t \"failed to acquire deasserted reset\\n\");\n+\n \tspacemit_i2c_reset(i2c);\n \n \ti2c_set_adapdata(&i2c->adapt, i2c);\n", "prefixes": [ "v2", "2/3" ] }