net: enetc: detect frame preemption hardware capability

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Similar to other TSN features, query the Station Interface capability
register to see whether preemption is supported on this port or not.
On LS1028A, preemption is available on ports 0 and 2, but not on 1
and 3.

This will allow us in the future to write the pMAC registers only on the
ENETC ports where a pMAC actually exists.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vladimir Oltean 2023-01-19 18:04:27 +02:00 • committed by David S. Miller

parent e3972399bb

commit 94557a9a73

3 changed files with 8 additions and 3 deletions

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3

drivers/net/ethernet/freescale/enetc/enetc.c

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5

drivers/net/ethernet/freescale/enetc/enetc.h

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3

drivers/net/ethernet/freescale/enetc/enetc_hw.h

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