From nobody Thu Oct 9 07:19:31 2025 Received: from DUZPR83CU001.outbound.protection.outlook.com (mail-northeuropeazon11012011.outbound.protection.outlook.com [52.101.66.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4264524467C; Thu, 19 Jun 2025 05:57:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.66.11 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750312661; cv=fail; b=Qgv6VLPiQNl4TkXaJp0S+Wjhn58JXRDb2zEt+vZh9g5hSXeThfVPsxJ6ql6AaQ5VlxyZCg2DwCoQ/cs+uhuDpReo5Yc8T6G80cE3BqNF8C3qMhaXaPAsJnJ1R6vpmR8j6N4HoFHzXrGV/tsJE6bSqf226sFN23hll6VboI/hj7o= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750312661; c=relaxed/simple; bh=8wuU64jPrNd0Rg4k/tqOIGUef3eRTHKqcSD5fQUi19I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=uboc1mIAbJ7xjnUZqbiMDT0eBv4uEwQtZ62lcvlSYZCX4tWvTJBQDH+1nBJhDd03eJ0dF4l8AYJTjWH/zX4mgmF0pGZGjfukHuPAq/lJFgppPT3/VwkzIsE5JeCXTs16vIwED8sd+L963lfJ55OYLHRuL5pjwoldHylTT6X9l2s= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=aufew6Pp; arc=fail smtp.client-ip=52.101.66.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="aufew6Pp" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=o1cXkK5KWphaxVpoDy6w+iG1YYSrB26T37IyrEyzslIRl/MpO4G8avXEfJ4s6mG8uUnMbgCM3ADN5X5zimyvyowYRtElgPUWNks7/g+nXbNADQbmgTsoet2AonpBLeiUPgOgL4dbI8niGSklhsJgq4G3w6UfwhLF/Oo6kH7NEeTVikufY9YLh//PcwFM3FlIPMdQCPX+6LgnOI/bIK9UldUhKVWG5cbgk5GvMGQP0B0jKr6Tz/AN+gQR+SNa/IF+10v7cE3skJa50Ex0SHG+85jNWU/LJIBtN90iV6JHAQjjTB20Q2dsStllN4WziOh3Xjllpi2BdmPEQ8Ukviy4zA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=JDf15+ngiMm+cJ0DBsedfeRD5Ab4Q01vKu08D4Rn5fk=; b=atzY0TtwVJiTKvqfhuaovXCiTAPv1yfa9sVawmNc1v8ictUOEM0hK/FanHNi9bmBjkNoQ/VsTSXe41c2Sbw81qg9plssIN/1tBbXtEqDDRjCQbXHzhk8OP2u/yJ4U9gIA6U7dc7gkat9oon2vo/AAFI+gCNCs9MOTPFD5CguI20+bAtPpi1VGt1tfBIm9wsWodo0PaGz/bbKZ+sNq9SDVXPz6JsFyIUC1e8wUfcg8vmxdSMde9hGVXS5F4P19jbE5m9o8eyY+NGGzwbyYhlWzpJgJBGNRgfgPF+ym0BIDzSfBFU4C/zGu0zSQ74dNuAiNVtoDjwUiZNk8eycWKWSkg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=JDf15+ngiMm+cJ0DBsedfeRD5Ab4Q01vKu08D4Rn5fk=; b=aufew6PpWHlmA4XNzImlIaisKLd+YAJQmdi1cY1JpFLxwre/o+juC4huThfYwXaxuU/frJruZTwurip/tk40hIB2bXqROO1dx23IMKwuKYh6AJThtmNxrmUAKApO6laTY53GMG4xaAz5SQ85EVdXLkQ1rqEZDgwJ5xb7/MZZPpHaZE7O382VbWCnUba+ZJF2GkWa8hxbjmQrBdf6OJxVFEy3GvBDBuIrjI6IQCsdhTFUKsdfynoDotNzp1/Gm2XPQkiyR5ImslJSH18c3F+BlB+iTUCBgrbRKo0nfxMmIblryiSEt+LsqZhEUwJ4XbGxdvfqxp/xKf3SQC3MgETJyw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS8PR04MB8676.eurprd04.prod.outlook.com (2603:10a6:20b:42b::10) by GVXPR04MB10151.eurprd04.prod.outlook.com (2603:10a6:150:1b7::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8857.20; Thu, 19 Jun 2025 05:57:32 +0000 Received: from AS8PR04MB8676.eurprd04.prod.outlook.com ([fe80::28b2:de72:ad25:5d93]) by AS8PR04MB8676.eurprd04.prod.outlook.com ([fe80::28b2:de72:ad25:5d93%4]) with mapi id 15.20.8857.020; Thu, 19 Jun 2025 05:57:32 +0000 From: Richard Zhu To: frank.li@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, bhelgaas@google.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, Richard Zhu Subject: [RESEND PATCH v1 1/2] dt-binding: pci-imx6: Add external reference clock mode support Date: Thu, 19 Jun 2025 13:55:14 +0800 Message-Id: <20250619055515.74675-2-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20250619055515.74675-1-hongxing.zhu@nxp.com> References: <20250619055515.74675-1-hongxing.zhu@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: MA0P287CA0004.INDP287.PROD.OUTLOOK.COM (2603:1096:a01:d9::14) To AS8PR04MB8676.eurprd04.prod.outlook.com (2603:10a6:20b:42b::10) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB8676:EE_|GVXPR04MB10151:EE_ X-MS-Office365-Filtering-Correlation-Id: 30c740e5-c7e4-48c0-e193-08ddaef62e73 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|52116014|7416014|376014|38350700014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?zz8K8wBfA6q80ZK+I+lxBoxwlHB3J37GpZeT8SbdP1jDVuBIYo++P+0d46mu?= =?us-ascii?Q?POKma9HQgl7zyatmdcSo7TWEedzNEKwtxHaElpmTfw65lLFQcGTmlU+N9F0a?= =?us-ascii?Q?Lk5dwGz8nFdC9I/kXbyjzV2JdijATB/ICU3JOhksTtNTOicO3F04A/33epwB?= =?us-ascii?Q?fa5d6TuL6+1MyFdw/UTiE+SwTyWdSIH/OTYLJAB9L/kxoPq9KJXqIO+R733y?= =?us-ascii?Q?jy8OAUYRUF9jneDmn3ld6T5Gsi1tJQ9R3ALxWzm/zhJTnykhjVjhRZ9D3nfr?= =?us-ascii?Q?cgFcAZO5rbZ0fO64SnIORfWp2fujca5yVAK1LKEhBihSSsXiDzspb8y1cRiR?= =?us-ascii?Q?NI+SPH3y1FhrqbdzTRvMmztAyztvBNboMnxZED3EqqksgU13cEDKQDOBtuhB?= =?us-ascii?Q?n9e/XXaP9QbWQYYgVADRO1cJKv3mFqCxAo7qF3vYTV1XtwcMoNU+grVCuIO1?= =?us-ascii?Q?EgRYNBwW0mTeoRlJ04SFaJZY0K7kjyXco77FquL7RDYfxAs+PNRgA9kJE7vy?= =?us-ascii?Q?K++yYhbe/iRdUp0L2Ld0OukNioRu/ZE2rd6iEOYNKAHsHyhPq4+8f7VE/ID7?= =?us-ascii?Q?/W7+jQeBdlrNH4SZ8PUeY8PM0rLU2SybWY2cgsFiE61w8CLQ5Ob8AUQPG5th?= =?us-ascii?Q?XZtFOun6kyFLqK5BJQJS2jUQdz1feXYGsV1H9JoYJInwzee1fjkXp+eINsYV?= =?us-ascii?Q?wuP4Kg/q6qqrjHhZd9+6/nXtXsjMYp82sw92mYdrGicObNFyYOMYHzqt4wOK?= =?us-ascii?Q?WkRIMoq48VTgPSEh9H4XpJ1w5MXR2U0Ij3xcfqBXlqZC0eBjXYHjL7kjt7NC?= =?us-ascii?Q?qV4bQRgif0p0GNwEH0oCLONzJQq7ewfmwnt0XbJ+N/YPXceL0Gtl9pklyTVR?= =?us-ascii?Q?9Ii5nLhjl+MtMIcwy1BU0093w5Qez9/uYbC0PPO1Ey914cZYTsXyloOuYBQ3?= =?us-ascii?Q?xWjGzZNpou7dd9WXpKcDKMgLx2//RkHBW1rzvn35hlu2vO1g7kELgiu22nlz?= =?us-ascii?Q?5mvVmbQyFII5OePksPCmHmZL/mwhFztt3A5xHW/Kdr658KJ4oQjwrXjRvroN?= =?us-ascii?Q?j6m7TMocsHdgrjsuTbO+oX9EjdELjkiOT2ukKarG5h/W4cBXT6S2gplrrQ51?= =?us-ascii?Q?Z+4fHcJnZa7/1XmgeBtLOKx5zsWFwmxvMKuh6pRQO2mW5Ox4WcsdRtdsK2vS?= =?us-ascii?Q?1wqS9nNPUrF+x4SYGrlwiiO8eGCqD4k0zjdMbu2PG60qla1cKpUkFUp5J15O?= =?us-ascii?Q?cn66dNO+/2S9FTnAPf2ESpcvBoLYqm0pcobXmNgJuGvqGE3jvsD7oZDoRq9R?= =?us-ascii?Q?a4i1Wp+ocX4E/Tk2I3Y7hLEukZVFbIkvKJhBLXYvORN4DFla0uKKFcxk9wvN?= =?us-ascii?Q?+H+xN7EBf89ZzDN5bP6q7tQNtxdtf8ZbvUPlHluAJzoLkddDIioIi+fbtDOa?= =?us-ascii?Q?jmEkHv+8QeVwlzSx6KymVHPzj0SlavqXYdU7czQ72pp0UIGCrTIhhi6Y4wO3?= =?us-ascii?Q?dro/I+LSpMM6dyo=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR04MB8676.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(1800799024)(52116014)(7416014)(376014)(38350700014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?iU3VoVuYeclaS6JYFcCp+CQPmXLJSEAt6vyh+Tl2xk+kwDrsbPuxk3nCwNlS?= =?us-ascii?Q?RDGAM3WLZ2YfcLQb/AgiO2E6rldRvgnqjBENXr2pBEkT1/ac5KLI8/ejvHwU?= =?us-ascii?Q?PcWekIPSXO2K/615rHsa6i5GPMi5QeDOZoDGFm8jf5uTmQVCmhOLrdTIS7Wy?= =?us-ascii?Q?HP3SGB9tBnAmqgW3yc/X3BJImdu62gQYRlfSf/btuEnH5YpX1VOMnRoo681I?= =?us-ascii?Q?qxsaP7TcV62N+aG03+r+xGPyuSg5Xcxui1FfTo2vOfQft3HlXkWhqxOSR8EH?= =?us-ascii?Q?3rRPL9eVPM3tv57exS0I2/SIocAiGmjn1XiLlf1GmJQNNPpGtk4EwwvfhrY6?= =?us-ascii?Q?qNiQzbQ5u63QhZqLg+y0EbDR6cQTFm35OyIQ5HZZZ6XNJ8woqsZnWyZf0mX8?= =?us-ascii?Q?DCBrXzbzsMsR8ci5Qv0yhNE7m5v2to5ByC1q/Oi5gt4Ki/ptcEv7Aji602Ri?= =?us-ascii?Q?aWRbWPBgwqg52E5jddCf06ms7RLDwG2MInRamdwRJNsGO/CJk9Oi4wlZSDIl?= =?us-ascii?Q?CKm9ArtZH7ck0sMQxOCPmeqFOUBz8YwDP3K168jyFOQ0aTtCbdAyZf6ByoUM?= =?us-ascii?Q?0foYGEGDa4mIV1ATMi6llfOUDBqItMe77ra1DhXR+mhKXUgMJ1vLSb6XgvSe?= =?us-ascii?Q?upMfkmomF5k25Qzby5zqZa7UbvPci+alE1CVnGJTH6+aqUle2ayIwI4pHDzs?= =?us-ascii?Q?HPm2N4zsfct27m+ERqothd9jqxcCHkSQlxyHQ2jA6NtY+j3EA18Z6ZFqZKkg?= =?us-ascii?Q?7lz8CDQhWoBD98bwycdoGyratTcWCtXd9QGPWBtB4fC1IaYGqUf+7AHkqfzD?= =?us-ascii?Q?NzQR3fJJeagQ67bavHRvwNoXJfFtb+pLgCZY81WnLsj9yLJfHrlXoE7nuWWQ?= =?us-ascii?Q?Gm2cA4l/fnbNnXFx2dDp71wbNU6jLJmjWGQrmltelsyl69StfFFaMO0J7DqH?= =?us-ascii?Q?a984k6g1l+e9zXVnZztpH3n7flvU3i156G+8WGh6FevJ6c05a1X56V9Id1z6?= =?us-ascii?Q?rrQ9Nu1+KAtfVJJbOHEFrSPCYAL9YAHMpI1ITC92mRUcQDyCLIN/oYr6FkFM?= =?us-ascii?Q?kiqYNJe6QebopfHK3SfI9/y04o7rb+5R/1bmPLlM5OGlfte92jUSs7jVw+/H?= =?us-ascii?Q?wPXz7q1SnjiYIILz0FdfYjsORIy0RprdIdsgMmwbMQ3xHRwVIVdPfkVL7YUw?= =?us-ascii?Q?VDQyZL2PFCDVF5+zHDTDMdN06K1sdXtlkDpSiSvh0a0jpXFCFA1HZCZrD8Jr?= =?us-ascii?Q?fOt01J4cnSV21pqL/hJIS0cy/eum5PX0vNjERUQxHfCLPKNnXLuAr3YtT1P6?= =?us-ascii?Q?ZoAytiTiTQMoUTfh0SyNwpRnaic1FYcZwNiksuu8bLej4TZuEVlOEJo3pRmx?= =?us-ascii?Q?QTDsVtxGsDzemMgoU1kYuJK1Ix90BlGxXAT0QlP8ALDf/H3a9w+yJBdvrCfK?= =?us-ascii?Q?Iu4ukDnJNSCCs6d+ZbYMgXwwU2VbqFJjXG/khGwkZMbelaWmZhIQJ0l5E5H6?= =?us-ascii?Q?SmOfJ+aa50/gcoB2pfoz8MlsBXbsmcMxYxjyg4HA3GwPyYo1pFCTeboBeOa2?= =?us-ascii?Q?V/hrQD/9ICEjfG7iJJWS8+PawDJODYCdrCkvCuq0?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 30c740e5-c7e4-48c0-e193-08ddaef62e73 X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB8676.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jun 2025 05:57:32.3995 (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: g+bsOy0CVmPx15qzabWEjoBSn6wW3KMHOJ1PPf2pX3hcYzMZOXwJdpP3jHnG4T03yJfuCov7zpJGoflm0mnyWA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR04MB10151 Content-Type: text/plain; charset="utf-8" On i.MX, the PCIe reference clock might come from either internal system PLL or external clock source. Add the external reference clock source for reference clock. Signed-off-by: Richard Zhu --- Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Do= cumentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml index ca5f2970f217..4b99fa8e7a25 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml @@ -219,7 +219,12 @@ allOf: - const: pcie_bus - const: pcie_phy - const: pcie_aux - - const: ref + - description: PCIe reference clock. + oneOf: + - description: The controller might be configured clocking + coming in from either an internal system PLL or an + external clock source. + enum: [ref, gio] =20 unevaluatedProperties: false =20 --=20 2.37.1 From nobody Thu Oct 9 07:19:31 2025 Received: from DUZPR83CU001.outbound.protection.outlook.com (mail-northeuropeazon11012011.outbound.protection.outlook.com [52.101.66.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 619CB244682; Thu, 19 Jun 2025 05:57:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.66.11 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750312663; cv=fail; b=qMTxWoMBuqlRvSA8sYJHdKosoUR+85MO7N7uZ4XppTGDdj6thDcAkZpBMS+IUuBZbVNtevX2MwbC+3pSnyrEK5HWNePuf1NvfH700Pic/l/awSg9PB1yi9l+koNm1fPv88j9G8JQqjQvmiuA5G/Z0RdbgIrKg6HH+tv1ININdSM= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750312663; c=relaxed/simple; bh=dwMYXC52XdpA8Gk+zD2yXPJol+bjMyN2fcaQUqm2w4c=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=Mu0UcCTzQTmE8Gk1y9qrn1m69Q8DSMRAbcX3nuDSJ21XGSEx2dRZ77l6Oz+xI5AELfCj2IlCJCxA9WAercrxOVi8rAg2Ep1CE9LYSe4c9+R8BWi+WKpSBucNlrSZgXLXIeo8P50sy72YeA6YKJCexSdI96o/aDZeBRqPiDQEiIo= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=dVaq69bz; arc=fail smtp.client-ip=52.101.66.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="dVaq69bz" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=mxBPv+0tfcdWflJhSLE1qe44VZF5BcBh8uXJaSarE/jGkhLSgC80vraHmM8qQoNRb/Glp2PQt0HSgjqMWLFFKDzn0l0cE2vnUWjjKJ2OpeOytpRyUgYpvmt3QDQk6fcxzviteqABap9S0ARK6Swnyg1liJNGKdh+BTHwzeU2Urqhrrww6XC778dWt4Aj/T5E75LwbMzhWnf/ZD9Cm3kZIS2Qw5CIPgYWNKoik7xtCIG5V/uui1nQBXcb7ZhyE3jn8u2UCETpHZtkyHZeYxrWblUdIpOfDN9bFnF0/KKz+1Sq66qUt4WsqqDj8IOehswK+JwG8NGQSA2FxL8FYVD7fA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=rZS0tvudNEmwyCBSU6jLQjNGU7MlIiMDOIiK7hPlw58=; b=HaeJ+ZzMHB5ejddqZC7aFe9gGSA1V8wWM+836HON3VppRCIKGgL9fixU2NQHMpIef4Yd5wSwZWO3My1eOQnytIes0otCERMGFhnOpUSeW11g35aOHvJWrGkS1ZhijlcR+8YZ2N3F3rjBCvb3FJQ//pvo5VB9+1jS2OIvYKXM4TyHFor3HIFC8wQqnzX+7ETGhzxI6+8TAz7/AmCkp3ib2v1qGI2XUyNglny6go2fIfDLhCuIvR8PbqbiJoFNN5iU7dNVUjhCkF3F1afRr4PMCIEoT2Y4uiYVSnisYZQMJb8w72EatPSBUB0jq1HIWLblwAYKNKvrr1jYPqrHMLtqPQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rZS0tvudNEmwyCBSU6jLQjNGU7MlIiMDOIiK7hPlw58=; b=dVaq69bzYDl1cWcFsedNaMUOP63HdJrzupQMdMMssjIXD19BSNFeaBRVln0Hf8jhJyqrjtYPAseBv2e4WhB6QoF30VUa3vOIvP+ZsHIoj7vIc1JtrjYYUdT+s6zjcsGEhilxmNmMMpQtW3RLoBiSU9KWJ3sgSSWJ8+5IxKdy2ZNyL+W9Sz+n2+f5ilE8xTzdAfb5Qk/Jp2QX/0ger9mv2KeFQZQccujfUkxg4exP36Gpuj11SEuiXncjhnLYGTtTqQ2lrTNvqO05S+h5OK0uXNC/Lb4zPogbWeQeYaWCmzixhUDkrc3EjrYwTEbQdBHDEpnCJym6+qB8ygJ7Lv9kFA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS8PR04MB8676.eurprd04.prod.outlook.com (2603:10a6:20b:42b::10) by GVXPR04MB10151.eurprd04.prod.outlook.com (2603:10a6:150:1b7::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8857.20; Thu, 19 Jun 2025 05:57:38 +0000 Received: from AS8PR04MB8676.eurprd04.prod.outlook.com ([fe80::28b2:de72:ad25:5d93]) by AS8PR04MB8676.eurprd04.prod.outlook.com ([fe80::28b2:de72:ad25:5d93%4]) with mapi id 15.20.8857.020; Thu, 19 Jun 2025 05:57:38 +0000 From: Richard Zhu To: frank.li@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, bhelgaas@google.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, Richard Zhu Subject: [RESEND PATCH v1 2/2] PCI: imx6: Add external reference clock mode support Date: Thu, 19 Jun 2025 13:55:15 +0800 Message-Id: <20250619055515.74675-3-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20250619055515.74675-1-hongxing.zhu@nxp.com> References: <20250619055515.74675-1-hongxing.zhu@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: MA0P287CA0004.INDP287.PROD.OUTLOOK.COM (2603:1096:a01:d9::14) To AS8PR04MB8676.eurprd04.prod.outlook.com (2603:10a6:20b:42b::10) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB8676:EE_|GVXPR04MB10151:EE_ X-MS-Office365-Filtering-Correlation-Id: 61d1894f-0b76-4980-5c6c-08ddaef631e6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|52116014|7416014|376014|38350700014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?CmfLNCv1WhX7PfwawGFYFgVSKs2uE2JM+97wS+9OeQ+c4bBs2Kq6ZC0cuWct?= =?us-ascii?Q?amFL+GBJQumLLGbKIdp/4CKbLT3RqdQHSrtjoq/i7pivbVYzFaOFYbnbotIv?= =?us-ascii?Q?NvbM9jPwP3b//AJmrgMThTOvuUYdkGTZrx3wcpwjaqjYmqtmCFuUEJJIkbWL?= =?us-ascii?Q?LhBEdY24hcUJpwobonvnKhqZ6040Bm+SPgEaStPcM/Vx7foVck2hnwBb6UdC?= =?us-ascii?Q?WsCGKRy3IV/Zne8oVWtf8sfUxq/P7gTmTnI07QUhyc42UUEsQi3LSZiHl6cQ?= =?us-ascii?Q?nDc/PBnisxv1KKgFWOkdSkH2o3MOoGbpU95k/fEC9FU0cAHHNYUMQlDxVEcB?= =?us-ascii?Q?FwhKcA8IScFo6YlRfmnPdoHeJvlWMfmt8wQpZo9P3w+I2Hn0GQNY10FEOMnC?= =?us-ascii?Q?G8qo3F5f8CUJDSk3Uitfd6SVf5wha2txgT3GCYZPPsWw09da50wEfpsKHjFP?= =?us-ascii?Q?WNlil2V2tgbkrLrJFldMDPaBEqiLapos1F9Yts3htuUGDH+c7LTIjGWR3ItC?= =?us-ascii?Q?w60fORdZOqCJnPlt3rRVUl7jUG4FBD+8U2rl8RD5RX27HWgd+t6Q4xz6tjv/?= =?us-ascii?Q?6HCsPfeXbiseMNli41hE78dBGnVj29fxbyh4Ws9zgZBXqv8olVwUSlSNCw3C?= =?us-ascii?Q?paW+KdkQ0fMms9XIMkUWyb36viEwYof3lWCeABw3zre/t30PBsngv00A7tep?= =?us-ascii?Q?uuyVw2eiadX/60Vh3pYo7EzrLRajzO6mXyICighl5kWNjvB3XzdaH8BfhDUY?= =?us-ascii?Q?loEmv2w0gUH/PuWTlflPlrneOC2gZN463nUuoR+dwWi/z/FDg8Kp7XGh0KN9?= =?us-ascii?Q?QDIzaeXe0WPiM7YYBG30IqggL9f6NspAtq4GDa0W3/r5kpo85IDfwpp+eY4s?= =?us-ascii?Q?/YaJqPuyuGw/XmAWmb+dfBN4aY+C0gCr943HRwjJoA1d4OPpM1qs44hbxjKE?= =?us-ascii?Q?0+Iv5h0uX3DKiEDT2LIYM8JkPAIf512ZyDMNxd7IRnIrhtfetx4EAebGYb1n?= =?us-ascii?Q?uZozQHaVEoNDiBJbv5jFumfc6DsaDqHV+kYtpExshNhq+dgheNnIoEjW0Sn6?= =?us-ascii?Q?Ps153GZXCEd3a0mQTfO9UB4+W8EDRRJgNi3ffr3qlSs92rNMHVuF/XEqf9iU?= =?us-ascii?Q?Ln0tGy+RkVpKKQeDVVQBHpplAsBTQq4FRRWiO0SAgVCurzuY+qIe7V6fTcFQ?= =?us-ascii?Q?+u5gklVnOBZ4v5GYmKOM5wSRFaqNeT2Jad7bUebslhE42r5y4HL7Yp3o+VWd?= =?us-ascii?Q?vWf6WXVwNmUK621KmPTbDPc6Zo8/mTU0NtacXx7Fo+BQWkD/M4dD8IrMJKbv?= =?us-ascii?Q?QjKyotGF5iUaukI4znq9GHDq7LrDnXtf6x+8DbtR2UX7GhPYpwcQRdW9+zAy?= =?us-ascii?Q?24hFJWGoWiHkFDsH39HOz8CO5cMW70t7avYL3JZ0DZSt9kX2+tlE1sjyl1CD?= =?us-ascii?Q?PmlkhWZ/Zy1PdW/z+zJnntyoHBhI+OjoC5tF3g2sfBA3ayUsb2tBDFRHcu1f?= =?us-ascii?Q?2GHkSm6YXClxgoU=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR04MB8676.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(1800799024)(52116014)(7416014)(376014)(38350700014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?+A5JI1CPLZjB8xUcjrggUFCV8aUK8DbIHeinJZ+FyFsSlJJfCeO8GExPucD4?= =?us-ascii?Q?t3IZPUnF0LMzFsUPPNFOnkU8yC8AVJVmLkIdoxf2CW1Z8AhkwjwEv/UzpTiH?= =?us-ascii?Q?Tz1Aioo5H4OoubZVNfeN/MzpGoxTEJMtaHUOYLq011DGDBRXDLnoitzuKpRy?= =?us-ascii?Q?0RvCULdvHa139nViz8QXiLA9AUkXFe0KODILEx5uDz62M6FGrHs/XbYwSbec?= =?us-ascii?Q?JtDkrDAPW4UkzdBpRimRY3Ul8uYvtLdV6xLLfijKhH9xESb5uyB0vSwM6qi1?= =?us-ascii?Q?CMQRVEUrwsaJ0T9oEynHgYy1vh6OSMXtpIN1/ztrzRojw/AMHagzWEZ1IAWF?= =?us-ascii?Q?eEBTtmWRIvlBWoMiXqjZjfFLpSx8axyrjZFCjCrF1TsWqNQAMLaK3Hz6yLef?= =?us-ascii?Q?a2AH88jghOo39vJGc4DIPl/807NKQ8EKJc3WQPszc0BxG87Ain20PdA2pWY/?= =?us-ascii?Q?Lts3B15sxxPt2MPage0aoumAbkH6G321LYtLahMw0/ZDLSoFCwQEkbNYktbF?= =?us-ascii?Q?vOJxXSjA0c9dCk0jh4fG+5WLM223uCUFFeQLffQrjuFXggI86tN+WG8kiHv5?= =?us-ascii?Q?3emULIBFqCYsgvauTqEn8CN6Ov1BDx4X/4H17I5rErg5DoAg8Sfl1J90OND3?= =?us-ascii?Q?SGSNay1+IGt1iSm+jrKVcn78w57UkKcRVHFvCl4xC3cPE6R8CLbjBzsH1cDY?= =?us-ascii?Q?o5b9zZoLAsj9VEKDiyD2voZ5VsAywYjH6r+VtjUE9Ub38B3hPjGc5fQhcBFL?= =?us-ascii?Q?YTYUjaFBo6+xDEAD1aGRto0Gl0/CKagkF3oYjGX1/bTHJWRa+32/WfNIsy0Z?= =?us-ascii?Q?sfO+ljorrD0rtAAXJQIXNqxFyZckY1RZHpsLmf5Dx4qgTe0xxjtcRECxXn63?= =?us-ascii?Q?w+qmwqtZp6KIC9jfFr8xCoAHx4Ktk0Nv5Qt+MW3+tbfLkMnHaILgA160xmNw?= =?us-ascii?Q?j/FG8f08Y1sK2euHQBQgLBfKBgqciYtaVaMsMflKO4vNkmkpPDbbHTUMk2Su?= =?us-ascii?Q?dpUJ3FOYWpwRO0dmDwswqDq3VNrl0MqXzFM56fM4S1nie2B0s+uC5c6IeOLA?= =?us-ascii?Q?Ui/zrwNXxFbFbDJDJyRGzoDDJMa17tU0maLctunzqFrRUh+CfK88qfPMotgW?= =?us-ascii?Q?zwXU4nhBVOCW8dfCFEaOnbUuZBdT/LnI4hn6yzyPdc795IGN/TCrB4de6JuA?= =?us-ascii?Q?u+v9wy1T+8WbffeXBdCfHM1ro0P/aWFxngJ8EdrGeGB14cONIm93xq9/ns/U?= =?us-ascii?Q?ALcgnUqi5gAKz1xK13JYGtui/QBP/h7GQdQuTgtMi4ppqu9UKjOCFMkZKjeo?= =?us-ascii?Q?yoGD4t8t9iie5/ucpc6cS6UqDcTaVEPd9ODpuZ/mnZQ9KBN0DyieBxZpQDhB?= =?us-ascii?Q?fHnD2DfkZqAoWEX53NaBmZk27IGuqQ3P7j8Lu5YWgzU+BgXxI6MLZCLIXEZf?= =?us-ascii?Q?Itp4lukq6nG5W1berCGVfvFRvDKBMprq0Qk75C5+1pa7zPlRTjiQjAUz9n7U?= =?us-ascii?Q?JMBIS/iqZhZr3VxizUtVhM4Vvsi6dCvgfm6YEs7CvftqbCBLPjxDNaFRzIRb?= =?us-ascii?Q?5du/mea3dJJyzbAvvLpWjW8RJPU09QSNIkhDDI6P?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 61d1894f-0b76-4980-5c6c-08ddaef631e6 X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB8676.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jun 2025 05:57:38.1058 (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: B9Jl4g1cb25OOpIlcyk/49cavvBMDH/HNR9to8Rr9ZGBitud9YYwHf0ccQHxUJR2T+lyvLieugYRtS+i5Pk5pA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR04MB10151 Content-Type: text/plain; charset="utf-8" The PCI Express reference clock of i.MX9 PCIes might come from external clock source. Add the external reference clock mode support. Signed-off-by: Richard Zhu --- drivers/pci/controller/dwc/pci-imx6.c | 34 ++++++++++++++++++++------- 1 file changed, 26 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller= /dwc/pci-imx6.c index 5a38cfaf989b..04c720377546 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -149,6 +149,7 @@ struct imx_pcie { struct gpio_desc *reset_gpiod; struct clk_bulk_data *clks; int num_clks; + bool enable_ext_refclk; struct regmap *iomuxc_gpr; u16 msi_ctrl; u32 controller_id; @@ -259,13 +260,24 @@ static int imx95_pcie_init_phy(struct imx_pcie *imx_p= cie) IMX95_PCIE_PHY_CR_PARA_SEL, IMX95_PCIE_PHY_CR_PARA_SEL); =20 - regmap_update_bits(imx_pcie->iomuxc_gpr, - IMX95_PCIE_PHY_GEN_CTRL, - IMX95_PCIE_REF_USE_PAD, 0); - regmap_update_bits(imx_pcie->iomuxc_gpr, - IMX95_PCIE_SS_RW_REG_0, - IMX95_PCIE_REF_CLKEN, - IMX95_PCIE_REF_CLKEN); + if (imx_pcie->enable_ext_refclk) { + /* External clock is used as reference clock */ + regmap_update_bits(imx_pcie->iomuxc_gpr, + IMX95_PCIE_PHY_GEN_CTRL, + IMX95_PCIE_REF_USE_PAD, + IMX95_PCIE_REF_USE_PAD); + regmap_update_bits(imx_pcie->iomuxc_gpr, + IMX95_PCIE_SS_RW_REG_0, + IMX95_PCIE_REF_CLKEN, 0); + } else { + regmap_update_bits(imx_pcie->iomuxc_gpr, + IMX95_PCIE_PHY_GEN_CTRL, + IMX95_PCIE_REF_USE_PAD, 0); + regmap_update_bits(imx_pcie->iomuxc_gpr, + IMX95_PCIE_SS_RW_REG_0, + IMX95_PCIE_REF_CLKEN, + IMX95_PCIE_REF_CLKEN); + } =20 return 0; } @@ -1600,7 +1612,7 @@ static int imx_pcie_probe(struct platform_device *pde= v) struct imx_pcie *imx_pcie; struct device_node *np; struct device_node *node =3D dev->of_node; - int ret, domain; + int i, ret, domain; u16 val; =20 imx_pcie =3D devm_kzalloc(dev, sizeof(*imx_pcie), GFP_KERNEL); @@ -1651,6 +1663,12 @@ static int imx_pcie_probe(struct platform_device *pd= ev) if (imx_pcie->num_clks < 0) return dev_err_probe(dev, imx_pcie->num_clks, "failed to get clocks\n"); + for (i =3D 0; i < imx_pcie->num_clks; i++) { + if (strncmp(imx_pcie->clks[i].id, "ref", 3) =3D=3D 0) + imx_pcie->enable_ext_refclk =3D false; + else + imx_pcie->enable_ext_refclk =3D true; + } =20 if (imx_check_flag(imx_pcie, IMX_PCIE_FLAG_HAS_PHYDRV)) { imx_pcie->phy =3D devm_phy_get(dev, "pcie-phy"); --=20 2.37.1