If I understand the dmesg output correctly, there is something happening for almost one second around the UART console initialization:
[ 1.090771] 20201000.serial: ttyAMA0 at MMIO 0x20201000 (irq = 81, base_baud = 0) is a PL011 rev2 [ 1.920577] console [ttyAMA0] enabled
Is there any option, how to reduce this extremely long time? Like:
- kernel compilation options via config?
- kernel parameters passing (cmdline.txt)?
- ARM/GPU configuration options (config.txt)?
- manual UART configuration?
- anything else?
Any hints welcome. Please note, I would like to use the UART as the console.