Messages in this thread | | | Subject | Re: [PATCH v2 2/2] clocksource/drivers/mtk_systimer: Add support for Mediatek SoCs | From | Daniel Lezcano <> | Date | Wed, 27 Jun 2018 11:59:55 +0200 |
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On 27/06/2018 11:50, Stanley Chu wrote: > On Wed, 2018-06-27 at 11:39 +0200, Daniel Lezcano wrote: >> On 27/06/2018 09:53, Stanley Chu wrote: >>> This patch adds a new clock event for the timer >>> found on the Mediatek SoCs. >>> >>> The Mediatek System Timer has several 32-bit timers. >>> Only one timer is used by this driver as a clock event >>> supporting oneshot events. >>> >>> The System Timer can be run with two clocks. A 13 MHz system >>> clock and the RTC clock running at 32 KHz. This implementation >>> uses the system clock with no clock source divider. >> >> Recent platforms have the arch_arm_timer and it will be always selected. >> >> What is the benefit of adding this timer ? >> >> > Hi Daniel, > > To save power as much as possible, our platform enables > "arch_timer_c3stop" in arch_arm_timer, and thus another always-on timer > is required for tick-broadcasting. System Timer is introduced for above > purpose
Obviously :)
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