mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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34270f5f6f
The current driver adjust freq formula is: fe * diff = ppb * pc Note: fe: ENET ref clock frequency in Hz diff = inc_corr - inc: difference between default increment and correction increment ppb: parts per billion adjustment from base pc: correction period (in number of fe clock cycles) The correction increment will be used after N cycles of regular increments, not every N cycles (with N being the correction period). For example, set ENET_ATCOR=4, INC=8, INC_CORR=9, there will be 4 increments of 8 (ENET_ATINC[INC]) , followed by 1 increment of 9 (ENET_ATINC[INC_CORR]). So, the correct formula is: fe * diff = ppb * (pc + 1) For ENET_ATCOR, a value 0 disables the correction counter and no corrections occur. So base on the origin formula, set pc = pc > 1 ? pc - 1 : pc. Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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appletalk | ||
arcnet | ||
bonding | ||
caif | ||
can | ||
cris | ||
dsa | ||
ethernet | ||
fddi | ||
hamradio | ||
hippi | ||
hyperv | ||
ieee802154 | ||
ipvlan | ||
irda | ||
phy | ||
plip | ||
ppp | ||
slip | ||
team | ||
usb | ||
vmxnet3 | ||
wan | ||
wimax | ||
wireless | ||
xen-netback | ||
dummy.c | ||
eql.c | ||
geneve.c | ||
ifb.c | ||
Kconfig | ||
LICENSE.SRC | ||
loopback.c | ||
macvlan.c | ||
macvtap.c | ||
Makefile | ||
mdio.c | ||
mii.c | ||
netconsole.c | ||
nlmon.c | ||
ntb_netdev.c | ||
rionet.c | ||
sb1000.c | ||
Space.c | ||
sungem_phy.c | ||
tun.c | ||
veth.c | ||
virtio_net.c | ||
vxlan.c | ||
xen-netfront.c |