]> git.baikalelectronics.ru Git - kernel.git/commit
net: dsa: microchip: Implement recommended reset timing
authorPaul Barker <pbarker@konsulko.com>
Wed, 9 Sep 2020 10:04:17 +0000 (11:04 +0100)
committerDavid S. Miller <davem@davemloft.net>
Wed, 9 Sep 2020 18:26:32 +0000 (11:26 -0700)
commit74000d703b165d165e2dae3de56ea4f3c3275c64
tree3e5d7a73d395ee8cea1722e2489af0e3c8102439
parenta9c3451fe52b3ea80719a8f80dc940a04dee02b4
net: dsa: microchip: Implement recommended reset timing

The datasheet for the ksz9893 and ksz9477 switches recommend waiting at
least 100us after the de-assertion of reset before trying to program the
device through any interface.

Also switch the existing msleep() call to usleep_range() as recommended
in Documentation/timers/timers-howto.rst. The 2ms range used here is
somewhat arbitrary, as long as the reset is asserted for at least 10ms
we should be ok.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/dsa/microchip/ksz_common.c