From: Michael Roth <mroth@nessie.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH V2] arm: timer and interrupt init rework
Date: Mon, 04 May 2009 14:41:06 +0200 [thread overview]
Message-ID: <49FEE262.8030401@nessie.de> (raw)
In-Reply-To: <20090502212624.AD01183420E8@gemini.denx.de>
Wolfgang Denk schrieb:
> What is "slow clock"?
On (some) ARM SoC there are two oscillators: A "slow" free running
oscillator typically with a dedicated 32 kHz crystal and the "main"
oscillator with a dedicated crystal in the MHz range.
The processor starts with the slow slock enabled and init code needs
to set up PLLs and muxes etc. to enable the main oscillator and switch
to derived clocks like master clock, cpu clock, IO clock and so on.
next prev parent reply other threads:[~2009-05-04 12:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-18 9:31 [U-Boot] [PATCH] arm: rename timer init callback timer_init Jean-Christophe PLAGNIOL-VILLARD
2009-04-27 21:53 ` Wolfgang Denk
2009-05-01 22:25 ` [U-Boot] [PATCH V2] arm: timer and interrupt init rework Jean-Christophe PLAGNIOL-VILLARD
2009-05-01 23:00 ` Dirk Behme
2009-05-01 23:14 ` Wolfgang Denk
2009-05-01 23:23 ` Jean-Christophe PLAGNIOL-VILLARD
2009-05-02 6:00 ` Dirk Behme
2009-05-02 12:50 ` Wolfgang Denk
2009-05-02 20:00 ` Jean-Christophe PLAGNIOL-VILLARD
2009-05-02 21:26 ` Wolfgang Denk
2009-05-04 12:41 ` Michael Roth [this message]
2009-05-06 19:20 ` Dirk Behme
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