Hi,
On 03/07/18 21:51, Andreas Färber wrote:
Am 03.07.2018 um 01:08 schrieb Andreas Färber:
Am 02.07.2018 um 10:01 schrieb Jagan Teki:
On Wed, Jun 27, 2018 at 6:12 AM, Andre Przywara andre.przywara@arm.com wrote:
At the moment we have the workaround for the Freescale arch timer erratum A-008585 merged into the generic timer_read_counter() routine. Split those two up, so that we can add other errata workaround more easily. Also add an explaining comment on the way.
Signed-off-by: Andre Przywara andre.przywara@arm.com
Applied both patches, to u-boot-sunxi/master
Tested both on top of v2018.07-rc2, fixes the boot for me.
Actually I saw it again just now, without having touched U-Boot at all. Unplugged power, retried, worked. So it seems we've reduced the likelihood, but something might still be astray...
There are reports for that happening on the kernel side as well: http://lists.infradead.org/pipermail/linux-arm-kernel/2018-July/588288.html (also see the follow-ups)
I suspect the TVAL access is affected as well (this internally accesses the counter), so we would need to cover this also. I'd suggest we wait for the kernel side solution and then copy that, but we keep this patch here in, as it seems to fix far more frequent problems.
Btw: I tried to use the Freescale workaround in U-Boot, but this at least requires another patch: to fix the problem when the CPU runs at 24MHz. Also it doesn't really help the MMC issue (I saw the same crashes), as it doesn't cover forward jumps.
Cheers, Andre.