On Wed, Jan 27, 2016 at 3:46 PM, <[email protected]> wrote: > From: Dinh Nguyen <[email protected]> > > The picoseconds to register value divisor(ps_to_regval) should be 60 and not > 200. Linux has KSZ9031_PS_TO_REG defined to be 60 as well. 60 is the correct > divisor because the 4-bit skew values are defined from 0x0000(-420ps) to > 0xffff(480ps), increments of 60. > > For example, a DTS skew value of 420, represents 0ps delay, which should be > 0x7. > With the previous divisor of 200, it would result in 0x2, which represents a > -300ps delay. > > With this patch, ethernet on the SoCFPGA DE0 Atlas is now able to work with > 1Gb ethernet. > > References: > http://www.micrel.com/_PDF/Ethernet/datasheets/KSZ9031RNX.pdf -> page 26 > > Signed-off-by: Dinh Nguyen <[email protected]>
Acked-by: Joe Hershberger <[email protected]> _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
