linux-kernel - Re: [PATCH v2 2/2] clocksource/drivers/mtk_systimer: Add support for Mediatek SoCs

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Message-ID: <2a40ec95-7352-f0c4-b394-d7b689de98ec@linaro.org>
Date:   Wed, 27 Jun 2018 11:39:32 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Stanley Chu <stanley.chu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        devicetree@...r.kernel.org, wsd_upstream@...iatek.com
Subject: Re: [PATCH v2 2/2] clocksource/drivers/mtk_systimer: Add support for
 Mediatek SoCs

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 ?


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