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GET /api/patches/2196302/?format=api
{ "id": 2196302, "url": "http://patchwork.ozlabs.org/api/patches/2196302/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-i2c/patch/20260213-i2c-mux-v5-4-fb2cbf9979b3@gmail.com/", "project": { "id": 35, "url": "http://patchwork.ozlabs.org/api/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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260213-i2c-mux-v5-4-fb2cbf9979b3@gmail.com>", "list_archive_url": null, "date": "2026-02-13T11:06:53", "name": "[v5,4/5] i2c: davinci: add support for setting bus frequency", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "95ccb7814203b334a3ba800b9141ad8e30ae796a", "submitter": { "id": 46679, "url": "http://patchwork.ozlabs.org/api/people/46679/?format=api", "name": "Marcus Folkesson", "email": "marcus.folkesson@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-i2c/patch/20260213-i2c-mux-v5-4-fb2cbf9979b3@gmail.com/mbox/", "series": [ { "id": 492083, "url": "http://patchwork.ozlabs.org/api/series/492083/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-i2c/list/?series=492083", "date": "2026-02-13T11:06:52", "name": "I2C Mux per channel bus speed", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/492083/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196302/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196302/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-i2c+bounces-15975-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=mMvY96JU;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260213-i2c-mux-v5-4-fb2cbf9979b3@gmail.com>", "References": "<20260213-i2c-mux-v5-0-fb2cbf9979b3@gmail.com>", "In-Reply-To": "<20260213-i2c-mux-v5-0-fb2cbf9979b3@gmail.com>", "To": "Wolfram Sang <wsa+renesas@sang-engineering.com>,\n Peter Rosin <peda@axentia.se>,\n Michael Hennerich <michael.hennerich@analog.com>,\n Bartosz Golaszewski <brgl@bgdev.pl>, Andi Shyti <andi.shyti@kernel.org>,\n Bartosz Golaszewski <brgl@kernel.org>", "Cc": "linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-arm-kernel@lists.infradead.org,\n Marcus Folkesson <marcus.folkesson@gmail.com>,\n Bartosz Golaszewski <brgl@kernel.org>", "X-Mailer": "b4 0.14.3", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=1624;\n i=marcus.folkesson@gmail.com; h=from:subject:message-id;\n bh=32tpqgfedy/sxp2AZTtYj6G+OqEGB6zW9YyBBWylfYU=;\n b=owEBbQKS/ZANAwAKAYiATm9ZXVIyAcsmYgBpjwYQjYtkmVzixam7zJlmI7LwWiVJSUQa8NVod\n MxK9pUbs/OJAjMEAAEKAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCaY8GEAAKCRCIgE5vWV1S\n MjL0EAC9rAgMMCWzcShokvBpBcCZucXuh3KlCmPqH5ZUGe3a8fLC2Y92u5hFvUeaoBpLmTLGP0l\n m93yekpOYZ5TdQSFzfnrikfz5HU3kG7n9J8UROVxIJksRZL5UUU3HgpObeJgxMoDPCvISmpgalJ\n jefFt/X3XOHJ3Axq4xHaH6B7IBvbYYu3KHIF7UWfDRmXeROBw8+oOqVcddBE1SCa/C4NUFTXpuL\n MWs1PUaG6BDi0vdGsBtEVMbsGRVKDYlKWgehq4AxBKzfc75WiI79nvwXOWlna8VnzBG6cQoDtGI\n dSYKb1l35lkZg0obmYBp0SDoiVKm9nT8JjteMoZl3r1q9mBrQB4496aCXtIZ7Dppc7S/d/JFXNh\n HcuYPMXPQ5zgAbsJmrQlm6LQ2U+94wLvMZMtoPWHVznvxvoVgTnX6xqEfTuJ1S6iluX92ACblGN\n 560bD4rPEf2D/hRKNmM8JRKNAxGrVcueMfJ27beq/HMwddNkpGd0C2i6iJmv0gp+I1b2tuAEErq\n pccgokdH9wtCL8+lmwUBRGSKy5zOSt8iB/VgcTnQ3SbsYCX8MlhTjwZ+W3wYvC/oNi2oIZFOR5A\n 23rYZ14sUuuD4cu5iMX99Wfops3pVytNSxnKQBMdro8CQ+OXAStSax5Gf34RbAcJs7bVVPe1zDP\n 7oNl6E/1JN8+nNA==", "X-Developer-Key": "i=marcus.folkesson@gmail.com; a=openpgp;\n fpr=AB91D46C7E0F6E6FB2AB640EC0FE25D598F6C127" }, "content": "Populate adapter with clock_hz and set_clk_freq to enable support for\ndynamic bus frequency.\n\nAcked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>\nSigned-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>\n---\n drivers/i2c/busses/i2c-davinci.c | 23 +++++++++++++++++++++++\n 1 file changed, 23 insertions(+)", "diff": "diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c\nindex 761de5a814df..3daa823dcb9e 100644\n--- a/drivers/i2c/busses/i2c-davinci.c\n+++ b/drivers/i2c/busses/i2c-davinci.c\n@@ -279,6 +279,27 @@ static int i2c_davinci_init(struct davinci_i2c_dev *dev)\n \treturn 0;\n }\n \n+static int davinci_i2c_set_clk(struct i2c_adapter *adap, u32 clock_hz)\n+{\n+\tstruct davinci_i2c_dev *dev = i2c_get_adapdata(adap);\n+\n+\tif (dev->bus_freq_hz == clock_hz)\n+\t\treturn 0;\n+\n+\tdev->bus_freq_hz = clock_hz;\n+\n+\t/* put I2C into reset */\n+\tdavinci_i2c_reset_ctrl(dev, 0);\n+\n+\t/* compute clock dividers */\n+\ti2c_davinci_calc_clk_dividers(dev);\n+\n+\t/* Take the I2C module out of reset: */\n+\tdavinci_i2c_reset_ctrl(dev, 1);\n+\n+\treturn 0;\n+}\n+\n /*\n * This routine does i2c bus recovery by using i2c_generic_scl_recovery\n * which is provided by I2C Bus recovery infrastructure.\n@@ -809,6 +830,8 @@ static int davinci_i2c_probe(struct platform_device *pdev)\n \tadap->dev.parent = &pdev->dev;\n \tadap->timeout = DAVINCI_I2C_TIMEOUT;\n \tadap->dev.of_node = dev_of_node(&pdev->dev);\n+\tadap->clock_hz = dev->bus_freq_hz;\n+\tadap->set_clk_freq = davinci_i2c_set_clk;\n \n \tif (dev->has_pfunc)\n \t\tadap->bus_recovery_info = &davinci_i2c_scl_recovery_info;\n", "prefixes": [ "v5", "4/5" ] }