net: macb: Fix SUBNS increment and increase resolution

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The subns increment register has 24 bits as follows:
RegBit[15:0] = Subns[23:8]; RegBit[31:24] = Subns[7:0]

Fix the same in the driver and increase sub ns resolution to the
best capable, 24 bits. This should be the case on all GEM versions
that this PTP driver supports.

Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Harini Katakam 2019-06-27 11:51:00 +05:30 • committed by David S. Miller

parent a8ee4dc1b5

commit 7ad342bc58

2 changed files with 9 additions and 2 deletions

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6

drivers/net/ethernet/cadence/macb.h

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5

drivers/net/ethernet/cadence/macb_ptp.c

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