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    SubjectRe: What breaks aic7xxx in post 2.6.12-rc2 ?
    On Thu, 2005-05-19 at 20:05 -0500, K.R. Foley wrote:
    > It does work with the exception that my u160 drive is still identified
    > as 80MB/s.

    Well, that's some good news, at least.

    > May 19 19:36:46 porky kernel: scsi0:A:0:0: Tagged Queuing enabled. Depth 32
    > May 19 19:36:46 porky kernel: target0:0:0: Beginning Domain Validation
    > May 19 19:36:46 porky kernel: WIDTH IS 1
    > May 19 19:36:46 porky kernel: (scsi0:A:0): 6.600MB/s transfers (16bit)
    > May 19 19:36:46 porky kernel: (scsi0:A:0): 80.000MB/s transfers
    > (40.000MHz, offset 127, 16bit)

    OK, it looks like the period is limited to 25ns. Could you confirm

    cat /sys/class/spi_transport/target0:0:0/period
    cat /sys/class/spi_transport/target0:0:0/max_period

    Now, if the max_period is 25, try doing

    echo 12.5 > /sys/class/spi_transport/target0:0:0/max_period

    and then

    echo 1 > /sys/class/spi_transport/target0:0:0/revalidate

    to trigger a revalidation of the domain and see if it comes up to 160.



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      Last update: 2005-05-20 03:21    [W:0.019 / U:53.544 seconds]
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