net: dsa: sja1105: Switch to hardware operations for PTP

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Adjusting the hardware clock (PTPCLKVAL, PTPCLKADD, PTPCLKRATE) is a
requirement for the auxiliary PTP functionality of the switch
(TTEthernet, PPS input, PPS output).

Therefore we need to switch to using these registers to keep a
synchronized time in hardware, instead of the timecounter/cyclecounter
implementation, which is reliant on the free-running PTPTSCLK.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Vladimir Oltean 2019-10-16 21:41:02 +03:00 • committed by David S. Miller

parent d9496f3ecf

commit 2fb079a28a

4 changed files with 128 additions and 124 deletions

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3

drivers/net/dsa/sja1105/sja1105.h

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220

drivers/net/dsa/sja1105/sja1105_ptp.c

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25

drivers/net/dsa/sja1105/sja1105_ptp.h

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6

drivers/net/dsa/sja1105/sja1105_spi.c

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