On Tue, Mar 12, 2019 at 08:31:46PM -0700, Andrey Smirnov wrote:
> We need to make sure that CNTFRQ is initialized before corresponding
> clocksource driver tries to use it, otherwise we'll end up crashing
> due to division by zero.
>
> We can't convert imx7_timer_init() to be an initcall since it is an
> i.MX7 specific task, but CPU type information won't be availible until
> after imx_init() gets executed at postcore_initcall() level. To solve
> this move all of the necessary code to be a part of
> imx7_cpu_lowlevel_init().
>
> Note, that original code both hardcoded frequency value to 8MHz as
> well as tried to write it to the first element of the frequency mode
> table which appears to be read-only on i.MX7. So while we are at it,
> simplify the code by adding set_cntfrq() implementation for ARMv7 and
> copy the code we already using for i.MX8MQ.
>
> Fixes: dece70752 ("clocksource: Enable architected timer support for CPU_V7")
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> ---
> arch/arm/include/asm/system.h | 5 +++++
> arch/arm/mach-imx/cpu_init.c | 13 +++++++++++++
> arch/arm/mach-imx/imx7.c | 35 -----------------------------------
> 3 files changed, 18 insertions(+), 35 deletions(-)
Applied, thanks
Sascha
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