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 :) -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
