IB/qib: Fix QLE734X link cycling (f665acb3) · Commits · 戴 / test

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>

drivers/infiniband/hw/qib/qib_iba7322.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -7709,7 +7709,7 @@ static int serdes_7322_init_new(struct qib_pportdata *ppd)
	ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));		ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));
	msleep(20);		msleep(20);
	/* Set Frequency Loop Bandwidth */		/* 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 */		/* Enable Frequency Loop */
	ibsd_wr_allchans(ppd, 2, (1 << 4), BMASK(4, 4));		ibsd_wr_allchans(ppd, 2, (1 << 4), BMASK(4, 4));
	/* Set Timing Loop Bandwidth */		/* Set Timing Loop Bandwidth */

Admin message