ARM BCM53573 SoC hangs/lockups caused by locks/clock/random changes

[Geert Uytterhoeven]

Hi Rafał,

On Mon, Sep 4, 2023 at 10:35 AM Rafał Miłecki <zajec5 at gmail.com> wrote:
> 2. Clock (arm,armv7-timer)
>
> While comparing main clock in Broadcom's SDK with upstream one I noticed
> a tiny difference: mask value. I don't know it it makes any sense but
> switching from CLOCKSOURCE_MASK(56) to CLOCKSOURCE_MASK(64) in
> arm_arch_timer.c (to match SDK) increases average uptime (time before a
> hang/lockup happens) from 4 minutes to 36 minutes.

That code path is used only for type != ARCH_TIMER_TYPE_CP15,
but your kernel log

    arch_timer: cp15 timer(s) running at 0.03MHz (virt).

suggest that type == ARCH_TIMER_TYPE_CP15?!?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds