net: dsa: microchip: Fix LAN937X set_ageing_time function

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The aging count is not a simple 20-bit value but comprises a 3-bit
multiplier and a 20-bit second time.  The code tries to use the
original multiplier which is 4 as the second count is still 300 seconds
by default.

As the 20-bit number is now too large for practical use there is an option
to interpret it as microseconds instead of seconds.

Fixes: 2c119d9982 ("net: dsa: microchip: add the support for set_ageing_time")
Signed-off-by: Tristram Ha <tristram.ha@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241218020224.70590-3-Tristram.Ha@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Tristram Ha 2024-12-17 18:02:24 -08:00 • committed by Jakub Kicinski

parent 262bfba8ab

commit bb98690434

2 changed files with 65 additions and 6 deletions

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62

drivers/net/dsa/microchip/lan937x_main.c

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9

drivers/net/dsa/microchip/lan937x_reg.h

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