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charset="utf-8" From: Zhipeng Wang of_stdout is declared extern in include/linux/of.h alongside of_root and of_chosen, but unlike those two it is not exported, preventing modules from referencing it. Export it with EXPORT_SYMBOL_GPL() so drivers that need the stdout device node can be built as modules. Signed-off-by: Zhipeng Wang --- drivers/of/base.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/of/base.c b/drivers/of/base.c index 6e7a42dedad3..a25c95800719 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -39,6 +39,7 @@ struct device_node *of_chosen; EXPORT_SYMBOL(of_chosen); struct device_node *of_aliases; struct device_node *of_stdout; +EXPORT_SYMBOL_GPL(of_stdout); static const char *of_stdout_options; =20 struct kset *of_kset; --=20 2.34.1 From nobody Fri Jul 24 23:31:01 2026 Received: from GVXPR05CU001.outbound.protection.outlook.com (mail-swedencentralazon11013020.outbound.protection.outlook.com [52.101.83.20]) (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 BFD303D3D16; Wed, 22 Jul 2026 07:15:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.83.20 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; 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Wed, 22 Jul 2026 07:15:41 +0000 Received: from DB8PR04MB6858.eurprd04.prod.outlook.com ([fe80::bc6f:5fd7:462:d0b5]) by DB8PR04MB6858.eurprd04.prod.outlook.com ([fe80::bc6f:5fd7:462:d0b5%4]) with mapi id 15.21.0245.009; Wed, 22 Jul 2026 07:15:41 +0000 From: Zhipeng.wang_1@oss.nxp.com To: robh@kernel.org, saravanak@kernel.org, ulfh@kernel.org, Frank.Li@nxp.com, s.hauer@pengutronix.de Cc: kernel@pengutronix.de, festevam@gmail.com, peng.fan@nxp.com, aisheng.dong@nxp.com, jindong.yue@nxp.com, xuegang.liu@nxp.com, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/2] pmdomain: imx: scu-pd: allow building as a module Date: Wed, 22 Jul 2026 16:15:12 +0900 Message-Id: <20260722071512.3494011-3-Zhipeng.wang_1@oss.nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260722071512.3494011-1-Zhipeng.wang_1@oss.nxp.com> References: <20260722071512.3494011-1-Zhipeng.wang_1@oss.nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: MA5PR01CA0300.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a01:220::12) To DB8PR04MB6858.eurprd04.prod.outlook.com (2603:10a6:10:113::9) 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: DB8PR04MB6858:EE_|GVXPR04MB11523:EE_ X-MS-Office365-Filtering-Correlation-Id: cf2863c7-ad5e-4e35-4afe-08dee7c10993 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|19092799006|376014|7416014|23010399003|366016|22082099003|18002099003|56012099006|11063799006|10067099003|6133799003; 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charset="utf-8" From: Zhipeng Wang Convert CONFIG_IMX_SCU_PD from bool to tristate to allow building as a loadable module. This is needed on Android devices using the Generic Kernel Image (GKI), where SoC-specific drivers must be built as modules rather than built into the core kernel image. For i.MX8Q devices running Android with a GKI kernel, the SCU power domain driver must be loadable. Without tristate support, power domains cannot be properly initialized, preventing these systems from functioning under GKI. Use subsys_initcall() so that when built-in the power domain provider probes before its consumers (e.g. the SCU clock driver at device_initcall level), fixing "failed to attached the power domain" warnings at boot. When built as a module, subsys_initcall() is equivalent to module_init(). No module_exit() is provided because the SCU power domain provider is a system-level resource that cannot be safely removed at runtime. Add MODULE_DEVICE_TABLE() for OF-based module autoloading. Signed-off-by: Zhipeng Wang --- drivers/pmdomain/imx/Kconfig | 2 +- drivers/pmdomain/imx/scu-pd.c | 8 +++++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/pmdomain/imx/Kconfig b/drivers/pmdomain/imx/Kconfig index 00203615c65e..472e9dec6bd4 100644 --- a/drivers/pmdomain/imx/Kconfig +++ b/drivers/pmdomain/imx/Kconfig @@ -21,7 +21,7 @@ config IMX9_BLK_CTRL depends on PM_GENERIC_DOMAINS =20 config IMX_SCU_PD - bool "IMX SCU Power Domain driver" + tristate "IMX SCU Power Domain driver" depends on IMX_SCU help The System Controller Firmware (SCFW) based power domain driver. diff --git a/drivers/pmdomain/imx/scu-pd.c b/drivers/pmdomain/imx/scu-pd.c index 3ec33667a308..e3f9e741daf7 100644 --- a/drivers/pmdomain/imx/scu-pd.c +++ b/drivers/pmdomain/imx/scu-pd.c @@ -531,6 +531,7 @@ static const struct of_device_id imx_sc_pd_match[] =3D { { .compatible =3D "fsl,scu-pd", &imx8qxp_scu_pd}, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, imx_sc_pd_match); =20 static struct platform_driver imx_sc_pd_driver =3D { .driver =3D { @@ -540,7 +541,12 @@ static struct platform_driver imx_sc_pd_driver =3D { }, .probe =3D imx_sc_pd_probe, }; -builtin_platform_driver(imx_sc_pd_driver); + +static int __init imx_sc_pd_driver_init(void) +{ + return platform_driver_register(&imx_sc_pd_driver); +} +subsys_initcall(imx_sc_pd_driver_init); =20 MODULE_AUTHOR("Dong Aisheng "); MODULE_DESCRIPTION("IMX SCU Power Domain driver"); --=20 2.34.1