tg3: Enable support for timesync gpio output

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The PTP_CAPABLE tg3 devices have a gpio output that is toggled when the
free running counter matches a watchdog value. This patch adds support
to set the watchdog and enable this feature.

Since the output is controlled via bits in the EAV_REF_CLCK_CTL
register, we have to read-modify-write it when we stop/resume.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Nithin Sujir 2013-07-29 13:58:38 -07:00 • committed by David S. Miller

parent 4c305fa2cb

commit 92e6457d4c

2 changed files with 68 additions and 4 deletions

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61

drivers/net/ethernet/broadcom/tg3.c

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11

drivers/net/ethernet/broadcom/tg3.h

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