net: lan966x: Update lan966x_ptp_get_nominal_value

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The clk_per_cfg register represents the value added to the system clock
for each clock cycle. The issue is that the default value is wrong,
meaning that in case the DUT was a grandmaster then everone in the
network was too slow. In case there was a grandmaster, then there is no
issue because the DUT will configure clk_per_cfg register based on the
master frequency.

Fixes: d096459494 ("net: lan966x: Add support for ptp clocks")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Horatiu Vultur 2022-04-09 20:41:40 +02:00 • committed by Jakub Kicinski

parent 8467dda0c2

commit eb9c0d671e

1 changed files with 4 additions and 4 deletions

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drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c

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