spdmem(4) - NetBSD Manual Pages

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SPDMEM(4)               NetBSD Kernel Interfaces Manual              SPDMEM(4)


NAME
spdmem -- Generic Memory Module Serial Presence Detect
SYNOPSIS
spdmem* at iic? addr 0x50 spdmem* at iic? addr 0x51 spdmem* at iic? addr 0x52 spdmem* at iic? addr 0x53 spdmem* at iic? addr 0x54 spdmem* at iic? addr 0x55 spdmem* at iic? addr 0x56 spdmem* at iic? addr 0x57
DESCRIPTION
The spdmem driver provides support for generic memory module Serial Pres- ence Detect. During kernel boot it displays module type, and where pos- sible, the size and rated speed of the memory module. Additional infor- mation such as bank configuration and width is printed if the kernel is booted in verbose mode. The Serial Presence Detect data for each memory module is also made accessible to user mode via sysctl(8). An entry for each spdmem device is created under the hw top-level MIB. Some SPD ROMs also have a temperature sensor. It's supported by sdtemp(4).
SEE ALSO
iic(4), intro(4), sdtemp(4)
HISTORY
The spdmem driver first appeared in NetBSD 5.0.
AUTHORS
The spdmem driver was written by Nicolas Joly <njoly@pasteur.fr> with additional work by Paul Goyette <paul@whooppee.com>. NetBSD 9.99 July 27, 2016 NetBSD 9.99
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