Re: [PATCH] clocksource/drivers/arm_arch_timer: Use event stream scaling when available

Daniel Lezcano
2022-03-01T21:14:59Z

On 03/02/2022 18:05, Marc Zyngier wrote:
> With FEAT_ECV and the 1GHz counter, it is pretty likely that the
> event stream divider doesn't fit in the field that holds the
> divider value (we only have 4 bits to describe counter bits [15:0]
>
> Thankfully, FEAT_ECV also provides a scaling mechanism to switch
> the field to cover counter bits [23:8] instead.
>
> Enable this on arm64 when ECV is available (32bit doesn't have
> any detection infrastructure and is unlikely to be run on an
> ARMv8.6 system anyway).
>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> ---

Applied, thanks

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