Re: [PATCH] reset: socfpga: use arch_initcall for early initialization
From: Pavel Machek
Date: Sun Oct 12 2014 - 10:30:44 EST
> From: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
> There are certain drivers that are required to get loaded very early using
> arch_initcall. An example of such a driver is the SOCFPGA's FPGA bridge driver.
> This driver has to get loaded early because it needs to enable FPGA components
> that are connected to the bridge.
> This FPGA bridge driver will using the reset controller API to toggle it's
> reset bits, thus, it needs the reset driver to be loaded as early as possible
> in order for it to get used properly.
> Signed-off-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
> +static int __init socfpga_reset_init(void)
> + return platform_driver_probe(&socfpga_reset_driver,
> + socfpga_reset_probe);
> +static void __exit socfpga_reset_exit(void)
> + platform_driver_unregister(&socfpga_reset_driver);
That is quite a strange combination. Driver can be module but needs to
be initialized early? Should we make it always built in?
> MODULE_AUTHOR("Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx");
> MODULE_DESCRIPTION("Socfpga Reset Controller Driver");
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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