Hello Jules, On 02.02.23 15:21, Jules Maselbas wrote: > On Mon, Jan 30, 2023 at 11:27:27AM +0100, Sascha Hauer wrote: >> The time spent for a register read depends on the bus clock which >> doesn't change that much between the different SoCs. >> > > Some arm devices have an architecture timer, isn't it possible to use > the udelay defined in arch/arm/lib64/pbl.c on i.MX ? I am not very > experienced on ARM cpus, is this only possible on armv7/armv8, and not > on every i.MX SoCs ? Cortex-A7 and later i.MX has an ARMv7 architected timer, but "normal" i.MX6Q/DL with Cortex-A9 doesn't. Cheers, Ahmad > > Cheers, > -- Jules > > > > > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
