Date: Wed, 17 Jul 2019 18:59:17 -0600 From: Ian Lepore <ian@freebsd.org> To: Stefan Parvu <sparvu@kronometrix.org>, freebsd-arm@freebsd.org Subject: Re: Rasclock (PCF2127 ) Hardware Clock FreeBSD 12.0 Message-ID: <6a39f74088d2984b5426e8585b5f7e864a6766f8.camel@freebsd.org> In-Reply-To: <5F33E59B-7EA5-4B8B-A95A-CD1FB569ACDC@kronometrix.org> References: <41A4CA5C-B487-490F-8A19-2D51F43E1004@kronometrix.org> <95616620-bbaf-dbc3-49eb-3e2562638d49@bunyatech.com.au> <AB510253-52D9-469C-B06E-5EC73C5F188E@kronometrix.org> <fd9991c4e6aaccb812a59ff86c9c8564ebd1d767.camel@freebsd.org> <74E3E782-8481-4B5B-A0AF-A04590C27D6D@kronometrix.org> <790afcb5f0809a89b45982958a85f1539fec05c7.camel@freebsd.org> <36088812-2135-4433-BC49-0BC433EC6767@kronometrix.org> <c52f9d9ab358ac0dc09af411bf97625945579b4e.camel@freebsd.org> <86CC4711-47AC-45C6-B6D3-71C9FFDD4A91@kronometrix.org> <BE321299-8569-4B2E-98FD-FD5210E1B6AF@kronometrix.org> <A9FD7D2B-9382-4EAE-B245-5F4DE643DBB7@gromit.dlib.vt.edu> <C93E2C64-6280-464D-AB5F-B1E968690CEF@kronometrix.org> <2ec7d7f63de31065b9cab396c662fe24f0107078.camel@freebsd.org> <BD0BE075-9E69-4CB0-826A-5DF2D160E9B1@kronometrix.org> <d71fc4e3db26242ffa817814d6cd92b8899fc2ab.camel@freebsd.org> <EF94BC84-4B8D-455C-952F-4FD1CC5557CE@kronometrix.org> <2AC05799-7D11-4200-8D16-38E3718470BB@kronometrix.org> <91E26684-07A0-4F03-92BC-8D49359B1358@kronometrix.org> <5F33E59B-7EA5-4B8B-A95A-CD1FB569ACDC@kronometrix.org>
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On Thu, 2019-07-18 at 00:59 +0300, Stefan Parvu wrote: > $ dmesg | grep nxp > nxprtc0: <NXP PCF2129 RTC> at addr 0xa2 on iicbus0 > nxprtc0: WARNING: RTC battery failed; time is invalid > nxprtc0: registered as a time-of-day clock, resolution 0.015625s > nxprtc0: RTC clock not running > > Stefan Parvu > sparvu@kronometrix.org Why does it claim to have found a PCF2129 when the rpi i2c overlay only has an entry for 2127? The driver will believe whatever is in the dts compatible string, it has no way to ask the chip at runtime what model it is. -- Ian
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