* Re: CFI Devices in x8 mode [not found] <NEBBKJHOALKOLCFPGELEMEFGCIAA.ajlennon@arcom.co.uk> @ 2001-03-26 12:00 ` David Woodhouse 2001-03-26 12:07 ` Alex Lennon 0 siblings, 1 reply; 2+ messages in thread From: David Woodhouse @ 2001-03-26 12:00 UTC (permalink / raw) To: Alex Lennon; +Cc: mtd ajlennon@arcom.co.uk said: > Running cfi_probe() from the mediagx driver now results in no CFI > chip being found. A brief look through the detection code shows that > we are writing 0x98 (Read Query Command) to offset 0x55. Next we read > back and expect to see 'Q', 'R' 'Y' starting at 0x10 (given a device > type of x8 (equ 1) and an interleave of 1). The 8-bit buswidth probe doesn't attempt to probe for a device type X16 any more. It should. Someone gave me a patch for that a few days ago, I think - but I can't find it. I've just committed what I think is the correct fix to CVS. -- dwmw2 To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org ^ permalink raw reply [flat|nested] 2+ messages in thread
* RE: CFI Devices in x8 mode 2001-03-26 12:00 ` CFI Devices in x8 mode David Woodhouse @ 2001-03-26 12:07 ` Alex Lennon 0 siblings, 0 replies; 2+ messages in thread From: Alex Lennon @ 2001-03-26 12:07 UTC (permalink / raw) To: David Woodhouse; +Cc: mtd >The 8-bit buswidth probe doesn't attempt to probe for a device type X16 any >more. It should. Someone gave me a patch for that a few days ago, I think - >but I can't find it. I've just committed what I think is the correct fix to >CVS. Sorry - I think I'm misunderstanding - I've got an eight bit device here but the code looks as though its accessing it as a 16-bit device from what I can see in the spec. For word addressing the query data structure starts at 0x10 and continues 'Q', 'R', Y', P_IDlo, P_IDhi etc. For byte addressing the q.d.s. starts at 0x20 and continues 'Q', 'Q', 'R', 'R', 'Y', 'Y', P_IDlo, P_IDhi etc. If I'm reading this stuff right then the cfi_cfi_probe() code doesn't seems to be taking the base offset into account ? Alex To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org ^ permalink raw reply [flat|nested] 2+ messages in thread
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2001-03-26 12:00 ` CFI Devices in x8 mode David Woodhouse
2001-03-26 12:07 ` Alex Lennon
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