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IB/qib: Fix QLE734X link cycling

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The SERDES was using the incorrect Frequency Loop Bandwidth setting
causing the link to cycle through the Physical link negotiation state
machine.  Fixing the Frequency Loop Bandwidth setting in the SERDES
helps the link come up faster and more reliably.

Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Mitko Haralanov 2012-05-07 14:02:53 -04:00 committed by Roland Dreier
parent 6ceaadee34
commit f665acb3cb
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/qib/qib_iba7322.c
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@ -7709,7 +7709,7 @@ static int serdes_7322_init_new(struct qib_pportdata *ppd)
ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));
msleep(20);
/* Set Frequency Loop Bandwidth */
ibsd_wr_allchans(ppd, 2, (7 << 5), BMASK(8, 5));
ibsd_wr_allchans(ppd, 2, (15 << 5), BMASK(8, 5));
/* Enable Frequency Loop */
ibsd_wr_allchans(ppd, 2, (1 << 4), BMASK(4, 4));
/* Set Timing Loop Bandwidth */