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Patch 1 exports of_stdout (which the driver references to find the console's power domain) from the OF core with EXPORT_SYMBOL_GPL(). Patch 2 converts CONFIG_IMX_SCU_PD from bool to tristate and adds MODULE_DEVICE_TABLE() for autoloading. subsys_initcall() is used so that when built-in the provider probes before its consumers (e.g. the SCU clock driver at device_initcall level). No module_exit() is provided since the provider cannot be safely removed at runtime. Patch 3 adds MODULE_SOFTDEP("pre: imx_scu_pd") to the i.MX8QXP clock driver so that modprobe loads the power domain module first when both are built as modules. Because of the cross-subsystem dependency (patches touch drivers/of, drivers/pmdomain, and drivers/clk), I would suggest taking the whole series through one tree. Changes in v4: - Add patch 3: MODULE_SOFTDEP in clk-imx8qxp to guarantee module load order when both drivers are modules. (Sashiko bot) Changes in v3: - Use subsys_initcall() instead of module_init() to fix probe ordering between the power domain provider and the SCU clock consumer when both are built-in. (Sashiko bot) Changes in v2: - Drop module_platform_driver() which provides module_exit() and could lead to use-after-free on module unload. Use module_init() only, so the module cannot be unloaded. (Sashiko bot) Zhipeng Wang (3): of: export of_stdout symbol pmdomain: imx: scu-pd: allow building as a module clk: imx: imx8qxp: add soft dependency on SCU power domain driver drivers/clk/imx/clk-imx8qxp.c | 1 + drivers/of/base.c | 1 + drivers/pmdomain/imx/Kconfig | 2 +- drivers/pmdomain/imx/scu-pd.c | 8 +++++++- 4 files changed, 10 insertions(+), 2 deletions(-) -- 2.34.1