firmware: arm_scmi: Warn if domain frequency multiplier is 0 or rounded off

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When (sustained_freq_khz * 1000) is less than sustained_perf_level, the
multiplier will be less than 1 and hence rounded down as 0. Similarly if
it is not multiple of sustained_perf_level the dom_info->mult_factor will
contain rounded down value and will end up impacting all the frequency
calculations done using it.

Add warning if and when the domain frequency multiplier is 0 or rounded
down so that it gives a clue to get the firmware tables fixed.

Suggested-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240119152338.3047620-1-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

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This commit is contained in:

Sudeep Holla 2024-01-19 15:23:37 +00:00

parent 6bd1b3fede

commit 534224b958

1 changed files with 17 additions and 2 deletions

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drivers/firmware/arm_scmi/perf.c

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