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| Path | csiph.com!eternal-september.org!feeder.eternal-september.org!aioe.org!bofh.it!news.nic.it!robomod |
|---|---|
| From | Alexandre Belloni <alexandre.belloni@free-electrons.com> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] rtc: pcf8563: disable CLKOUT |
| Date | Tue, 13 Oct 2015 22:20:03 +0200 |
| Message-ID | <qjedd-o2-21@gated-at.bofh.it> (permalink) |
| References | <qj00x-4Ug-1@gated-at.bofh.it> |
| X-Original-To | Heiko Schocher <hs@denx.de> |
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| User-Agent | Mutt/1.5.23 (2014-03-12) |
| Sender | robomod@news.nic.it |
| List-ID | <linux-kernel.vger.kernel.org> |
| X-Mailing-List | linux-kernel@vger.kernel.org |
| Approved | robomod@news.nic.it |
| Lines | 25 |
| Organization | linux.* mail to news gateway |
| X-Original-Cc | linux-kernel@vger.kernel.org, Georg.Soffel@bosch-si.com, rtc-linux@googlegroups.com, Alessandro Zummo <a.zummo@towertech.it>, devicetree@vger.kernel.org |
| X-Original-Date | Tue, 13 Oct 2015 22:17:03 +0200 |
| X-Original-Message-ID | <20151013201703.GA3421@piout.net> |
| X-Original-References | <1444712938-22865-1-git-send-email-hs@denx.de> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | csiph.com linux.kernel:1246114 |
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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). -- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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[PATCH] rtc: pcf8563: disable CLKOUT Heiko Schocher <hs@denx.de> - 2015-10-13 07:10 +0200
Re: [PATCH] rtc: pcf8563: disable CLKOUT Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2015-10-13 22:20 +0200
Re: [PATCH] rtc: pcf8563: disable CLKOUT Heiko Schocher <hs@denx.de> - 2015-10-14 06:20 +0200
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