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authorPaul Mackerras <paulus@samba.org>2008-11-19 16:10:32 +1100
committerPaul Mackerras <paulus@samba.org>2008-11-19 16:10:32 +1100
commitcea555d384b85271035814c5adad23e6c7fc5d2a (patch)
tree1181b6333a69a135293ec75f8a48c849ee32c015 /Documentation/ics932s401
parent78608dd32ce46789e970d6c3c423cd668c138d6c (diff)
parent7f0f598a0069d1ab072375965a4b69137233169c (diff)
downloadlinux-next-cea555d384b85271035814c5adad23e6c7fc5d2a.tar.gz
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+Kernel driver ics932s401
+======================
+
+Supported chips:
+ * IDT ICS932S401
+ Prefix: 'ics932s401'
+ Addresses scanned: I2C 0x69
+ Datasheet: Publically available at the IDT website
+
+Author: Darrick J. Wong
+
+Description
+-----------
+
+This driver implements support for the IDT ICS932S401 chip family.
+
+This chip has 4 clock outputs--a base clock for the CPU (which is likely
+multiplied to get the real CPU clock), a system clock, a PCI clock, a USB
+clock, and a reference clock. The driver reports selected and actual
+frequency. If spread spectrum mode is enabled, the driver also reports by what
+percent the clock signal is being spread, which should be between 0 and -0.5%.
+All frequencies are reported in KHz.
+
+The ICS932S401 monitors all inputs continuously. The driver will not read
+the registers more often than once every other second.
+
+Special Features
+----------------
+
+The clocks could be reprogrammed to increase system speed. I will not help you
+do this, as you risk damaging your system!