Hi Alexander,
On 03/28/2018 12:21 AM, Alexander Kochetkov wrote: > The question is: does rk3066 and rk3188 have arch timer? If no, than removing > rk_timer > will break u-boot for these chips. Thanks for your comment, I will double check about if this two chips have arch timer, I think it should be, but I don't have boards now. Thanks, - Kever > > And my comment was about global timer, not arch timer. And I failed to enable > arch > timer for rk3188 in the kernel. > > Alexander. > >> 27 марта 2018 г., в 19:07, Alexander Kochetkov <al.koc...@gmail.com> >> написал(а): >> >>> 27 марта 2018 г., в 12:29, Kever Yang <kever.y...@rock-chips.com> >>> написал(а): >>> >>> We use ARM arch timer instead. >> Hi, Kever! >> >> Just let you know, that arch timer rate on rk3066 and rk3188 depends on CPU >> frequency. >> I’ve made patch[1] for fixing that in kernel. >> If u-boot do arm clock changes after timer initialization, timer can provide >> inaccurate delays. >> >> [1] >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/clocksource/rockchip_timer.c?id=5e0a39d0f727b35c8b7ef56ba0724c8ceb006297 >> >> Alexander. > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
