[PATCH] soc: imx8m: Probe the SoC driver late

[Marek Vasut]

On 9/25/24 6:04 PM, Arnd Bergmann wrote:
> On Wed, Sep 25, 2024, at 16:00, Marek Vasut wrote:
>> With driver_async_probe=* on kernel command line, the following trace is
>> produced because on i.MX8M Plus hardware because the soc-imx8m.c driver
>> calls of_clk_get_by_name() which returns -EPROBE_DEFER because the clock
>> driver is not yet probed. This was not detected during regular testing
>> without driver_async_probe.
>>
>> Attempt to fix it by probing the SoC driver late, but I don't think that
>> is the correct approach here.
> 
> I think the correct fix would be to propagate the -EPROBE_DEFER
> and return that from imx8_soc_init(), so it gets retried again
> after the clock driver.
I already tried that, but if I return -EPROBE_DEFER from 
device_initcall, it doesn't get retriggered . I suspect EPROBE_DEFER 
works only for proper drivers ?