Patch Detail
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patch:
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GET /api/patches/2217329/?format=api
{ "id": 2217329, "url": "http://patchwork.ozlabs.org/api/patches/2217329/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260327-pinctrl-mux-v5-6-d4aec9d62c62@nxp.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260327-pinctrl-mux-v5-6-d4aec9d62c62@nxp.com>", "list_archive_url": null, "date": "2026-03-27T21:34:03", "name": "[v5,6/7] arm64: dts: imx8mp-evk: add board-level mux for CAN2 and MICFIL", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "aaea547d317910aca57f94fcd06d350402ca87d4", "submitter": { "id": 68011, "url": "http://patchwork.ozlabs.org/api/people/68011/?format=api", "name": "Frank Li", "email": "Frank.Li@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260327-pinctrl-mux-v5-6-d4aec9d62c62@nxp.com/mbox/", "series": [ { "id": 497832, "url": "http://patchwork.ozlabs.org/api/series/497832/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=497832", "date": "2026-03-27T21:33:57", "name": "pinctrl: Add generic pinctrl for board-level mux chips", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/497832/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217329/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217329/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-gpio+bounces-34333-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-gpio@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ 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"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=yj9e6SKLGiBn4BvTY+vV7gAKxTFz16kmEmbNs2EUfZg=;\n b=ibnfU2yjoMpgD6W87viydzvcux6r+t8x04b07u2CzwIPK1q0O0ybXuvgdnQW8N6sY4zo+/IaDGWHkCbP6t3VdIznQPs7vPOO0u+w97TqjswTr0S20coIivQ/uRqUUlcWAJHvC6u9I+0sQLJjNlabWVr/t5dtBJjjcoXY3jmHkeNS7dwSGcK6pTSSRJSn0uoLsnPw4uhB7Jwa535zp5rSS9hR2qKaz4cMHR7xGQgDAVFpXuc2Kwhbw8ZaE9YHUh93q0rzzUTkz61j+2CkMAhGWjOJIICadcy/pVmN5RFuNxKxlMdy7knGnr7ud1J/H+tz+CHvsghGb3Y47ur/rwyR+g==", "From": "Frank Li <Frank.Li@nxp.com>", "Date": "Fri, 27 Mar 2026 17:34:03 -0400", "Subject": "[PATCH v5 6/7] arm64: dts: imx8mp-evk: add board-level mux for\n CAN2 and MICFIL", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260327-pinctrl-mux-v5-6-d4aec9d62c62@nxp.com>", "References": "<20260327-pinctrl-mux-v5-0-d4aec9d62c62@nxp.com>", "In-Reply-To": "<20260327-pinctrl-mux-v5-0-d4aec9d62c62@nxp.com>", "To": "Peter Rosin <peda@axentia.se>, Linus Walleij <linusw@kernel.org>,\n Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Conor Dooley <conor+dt@kernel.org>,\n =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= <rafal@milecki.pl>,\n Sascha Hauer <s.hauer@pengutronix.de>,\n Pengutronix Kernel Team <kernel@pengutronix.de>,\n Fabio Estevam <festevam@gmail.com>", "Cc": "linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,\n devicetree@vger.kernel.org, imx@lists.linux.dev,\n linux-arm-kernel@lists.infradead.org, Haibo Chen <haibo.chen@nxp.com>,\n Frank Li <Frank.Li@nxp.com>, Ahmad Fatoum <a.fatoum@pengutronix.de>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1774647254; l=2170;\n i=Frank.Li@nxp.com; s=20240130; h=from:subject:message-id;\n bh=1UX6p1C0kT4kF5hCfTKLF4LKgaOM5Xl6++ZwO5kKYIM=;\n b=Pq4zSNms13/vDNrJ+W3moLCnthDdrdgh1Jb2WWOYEXvl0HppzT075A9zIXBN7GtJzWvdjokyk\n 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"X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 84431c5d-bedd-4990-fcc0-08de8c48a33c", "X-MS-Exchange-CrossTenant-AuthSource": "PA4PR04MB9366.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "27 Mar 2026 21:34:33.8593\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "686ea1d3-bc2b-4c6f-a92c-d99c5c301635", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n 8BPQYVyrgZ+AiRrkYLUZqtBH1rsNi2xBW+ths59cmpzzglEhk8IEYJtZ4dNGdUr8tWiUjIut8qaEfWnSU0Momg==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "AM9PR04MB8668" }, "content": "The board integrates an on-board mux to route shared signals to either\nCAN2 or PDM (MICFIL). The mux is controlled by a GPIO.\n\nAdd a pinctrl-based multiplexer node to describe this routing and ensure\nproper probe ordering of the dependent devices.\n\nPreviously, MICFIL operation implicitly depended on the default level of\nPCA6416 GPIO3. After adding the pinctrl-multiplexer, make the dependency\nexplicit.\n\nReviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>\nSigned-off-by: Frank Li <Frank.Li@nxp.com>\n---\nchange in v3 - v4\n- none\nchange in v2\n- update commit message to show why need update PDM MICIFL.\n---\n arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 23 +++++++++++++++++++++--\n 1 file changed, 21 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts\nindex b256be710ea1281465f5cecc7a3b979f2c068e43..1341ee27239fd41a26117adc9023524ce50420a7 100644\n--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts\n+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts\n@@ -50,6 +50,25 @@ status {\n \t\t};\n \t};\n \n+\tcan_mux: mux-controller-0 {\n+\t\tcompatible = \"gpio-mux\";\n+\t\t#mux-control-cells = <0>;\n+\t\t#mux-state-cells = <1>;\n+\t\tmux-gpios = <&pca6416 3 GPIO_ACTIVE_HIGH>;\n+\t};\n+\n+\tcan_mux_pinctrl: pinctrl-gpiomux {\n+\t\tcompatible = \"pinctrl-multiplexer\";\n+\n+\t\tcan_fun: can-grp {\n+\t\t\tmux-states = <&can_mux 1>;\n+\t\t};\n+\n+\t\tpdm_fun: pdm-grp {\n+\t\t\tmux-states = <&can_mux 0>;\n+\t\t};\n+\t};\n+\n \tmemory@40000000 {\n \t\tdevice_type = \"memory\";\n \t\treg = <0x0 0x40000000 0 0xc0000000>,\n@@ -446,7 +465,7 @@ &flexcan1 {\n \n &flexcan2 {\n \tpinctrl-names = \"default\";\n-\tpinctrl-0 = <&pinctrl_flexcan2>;\n+\tpinctrl-0 = <&pinctrl_flexcan2>, <&can_fun>;\n \tphys = <&flexcan_phy 1>;\n \tstatus = \"disabled\";/* can2 pin conflict with pdm */\n };\n@@ -712,7 +731,7 @@ &lcdif3 {\n &micfil {\n \t#sound-dai-cells = <0>;\n \tpinctrl-names = \"default\";\n-\tpinctrl-0 = <&pinctrl_pdm>;\n+\tpinctrl-0 = <&pinctrl_pdm>, <&pdm_fun>;\n \tassigned-clocks = <&clk IMX8MP_CLK_PDM>;\n \tassigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;\n \tassigned-clock-rates = <196608000>;\n", "prefixes": [ "v5", "6/7" ] }