mirror of https://gitee.com/openkylin/linux.git
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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| .. | ||
| fs_enet | ||
| Kconfig | ||
| Makefile | ||
| fec.h | ||
| fec_main.c | ||
| fec_mpc52xx.c | ||
| fec_mpc52xx.h | ||
| fec_mpc52xx_phy.c | ||
| fec_ptp.c | ||
| fsl_pq_mdio.c | ||
| gianfar.c | ||
| gianfar.h | ||
| gianfar_ethtool.c | ||
| gianfar_ptp.c | ||
| ucc_geth.c | ||
| ucc_geth.h | ||
| ucc_geth_ethtool.c | ||
| xgmac_mdio.c | ||