Date: Mon, 24 Apr 2017 15:46:37 -0300 From: Luiz Otavio O Souza <lists.br@gmail.com> To: "kronometrix.org" <sparvu@kronometrix.org> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: FreeBSD 12.0 Current & hardware clock Message-ID: <CAB=2f8z-qUCO0N4yQKhd-Qu4=eMj%2B9VZeeqnPH%2BPOsw=eG5nwQ@mail.gmail.com> In-Reply-To: <463b05bf-eed5-485d-9a85-01108b08110c@Spark>
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On 24 April 2017 at 08:31, kronometrix.org wrote: > Hi, > > Im currently testing this image: FreeBSD-armv6-12.0-RPI2-310476.img.gz [1] > on my RBPI2. I need a hardware clock which will work with this image. Couple > of questions: > > 1. If I understood right I need to recompile the kernel since there is no hardware > clock support on the mentioned image … Right ? Yes, you have to add your RTC device and rebuild the kernel. > > 2. Is there support for Rasclock [2] based on NXP PCF2127AT chipset ? No, we only have the driver for the pcf2123 (spi only RTC), but should not be hard to add support for it. > > 3. Still there the regarding NTP and hardware clock when OS was dying on such > setup ? (you need to enable sysctl machdep.rtc_save_period=0 to workaround) Yes, or you can use the gpioiic/gpiospi which don't use interrupts (and will not cause any issues with NTP -> RTC time updates). Luizhome | help
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