From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <003601c2c784$e92ebcc0$870ca8c0@hercules> From: "Frank Robbins" To: "Steven Scholz" Cc: References: <3E37996A.40302@imc-berlin.de> Subject: Re: problems with MPC8xx internal RTC !? Date: Wed, 29 Jan 2003 10:55:15 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Just an a side note has the errata for the RTC been fixed on the MPC855T it is not fixed on the 860T and I believe this feature is now missing on future MPC 866T, 857 variants. If not it will draw several mA from your battery and discharge it very quickly Frank ----- Original Message ----- From: "Steven Scholz" To: "Linuxppc-Embedded" Sent: Wednesday, January 29, 2003 9:05 AM Subject: problems with MPC8xx internal RTC !? > > Hi there, > > I am using an MPC855T, external clocked with 16 MHz. Using the internal PLLs it > runs at 80MHz/40Mhz. An 32.768KHZ crystal is connected to clock the MPCs > internal RTC. A battery is there as well. > > All seems to be fine. But I realized that the RTC runs too fast. It seems to be > releated to systems restarts. > > It tested. After 25 reboots the RTC is already SIX seconds ahead!!! > > rdate: Wed Jan 29 10:03:58 2003 > date: Wed Jan 29 10:04:04 CET 2003 > hwclock: Wed Jan 29 10:04:04 2003 0.000000 seconds > > Any ideas? > > Thanks, > > Steven > > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/