Re: [PATCH v2 2/2] clocksource/drivers/mtk_systimer: Add support for Mediatek SoCs
From: Daniel Lezcano <hidden>
Date: 2018-06-27 09:59:58
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linux-devicetree, lkml
On 27/06/2018 11:50, Stanley Chu wrote:
On Wed, 2018-06-27 at 11:39 +0200, Daniel Lezcano wrote:quoted
On 27/06/2018 09:53, Stanley Chu wrote:quoted
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
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