Subject: Ricoh 1394 + multi-card-reader device
To: None <>
From: Daniel Carosone <>
List: current-users
Date: 09/29/2006 17:02:20
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My laptop has one of those built-in multi card reader slots.  I
assumed it would probably be a usb device, but it turns out not to be.
Instead, it's on the same chip that provides the 1394 port (but it's
not a 1394 device, either):

fwohci0 at pci5 dev 1 function 0: Ricoh product 0x0832 (rev. 0x00)
fwohci0: interrupting at ioapic0 pin 19 (irq 3)
fwohci0: OHCI version 1.10 (ROM=0)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 46:4f:c0:00:32:b8:c8:38
fwohci0: Phy 1394a available S400, 1 ports.
fwohci0: Link S400, max_rec 2048 bytes.
ieee1394if0 at fwohci0: IEEE1394 bus
fwip0 at ieee1394if0: IP over IEEE1394
fwohci0: Initiate bus reset
Ricoh product 0x0822 (SD Host Controller system, interface 0x01, revision 0x19) at pci5 dev 1 function 1 not configured
Ricoh product 0x0843 (miscellaneous system, revision 0x01) at pci5 dev 1 function 2 not configured
Ricoh product 0x0592 (miscellaneous system, revision 0x0a) at pci5 dev 1 function 3 not configured
Ricoh product 0x0852 (miscellaneous system, revision 0x05) at pci5 dev 1 function 4 not configured

Anyone know much about these devices, or working on a driver for them?
Apparently several recent laptops have the same thing.


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