Re: How to prevent embedded ppc reset deadlock? (MPC83xx/85xx)

2008-09-30 Thread Leon Woestenberg
André, On Tue, Sep 30, 2008 at 12:05 AM, Leon Woestenberg [EMAIL PROTECTED] wrote: Since you also have to assert HRESET when you assert PORESET But when I assert PORESET, the processor will assert HRESET itself AFAIK, so why do this? you can wire-or them with a low drop schottky diode.

How to prevent embedded ppc reset deadlock? (MPC83xx/85xx)

2008-09-29 Thread Leon Woestenberg
Hello all, not Linux related per se*, but I wonder how your board designs deal with the reset circuitry for embedded PowerPC processors (MPC8313E in my case). My requirement is that both a processor-external hard reset and processor-internal hard reset must both reset the boot device NOR

Re: How to prevent embedded ppc reset deadlock? (MPC83xx/85xx)

2008-09-29 Thread Leon Woestenberg
Hello André, On Mon, Sep 29, 2008 at 11:50 PM, André Schwarz [EMAIL PROTECTED] wrote: Leon, you're right. PORESET is just there to prevent the core from running as long as power may be unstable and/or PLLs are out of lock. HRESET is the signal that should reset everything. I did it on my