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Message-ID: <561DD7D1.5040102@denx.de> Date: Wed, 14 Oct 2015 06:19:29 +0200 From: Heiko Schocher <hs@...x.de> To: Alexandre Belloni <alexandre.belloni@...e-electrons.com> Cc: linux-kernel@...r.kernel.org, Georg.Soffel@...ch-si.com, rtc-linux@...glegroups.com, Alessandro Zummo <a.zummo@...ertech.it>, devicetree@...r.kernel.org Subject: Re: [PATCH] rtc: pcf8563: disable CLKOUT Hello Alexandre, Am 13.10.2015 um 22:17 schrieb Alexandre Belloni: > Hi, > > On 13/10/2015 at 07:08:58 +0200, Heiko Schocher wrote : >> Disable the CLKOUT of the RTC after power-up. >> After power-up/reset of the RTC, CLKOUT is enabled by default, >> with CLKOUT enabled the RTC chip has 2-3 times higher power >> consumption. If you do not need CLKOUT, you can disable the >> CLKOUT with setting "disable-clkout" property. >> > > I think you can simply unconditionally disable clkout. My preferred way > of doing what you suggest is probably to register a clock in the CCF. If > the clock is not used, it will be automatically disabled. > It will also provide a generic way of setting the clkout frequency (some > RTC are able to output 32kHZ, 1kHz and 1Hz). Does disabling it ot break some boards? I take a look into CCF, good idea. bye, Heiko -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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