13 Dec
2011
13 Dec
'11
1:45 a.m.
On Sun, 11 Dec 2011 21:26:34 -0600 Huang Changming-R66093 r66093@freescale.com wrote:
From: Huang Changming-R66093 Sent: Thursday, November 17, 2011 10:16 AM
In the current u-boot code, the value of these fields are the reserved value (0b100), through the signal integrity measurement on freescale's board with these reserved setting, the signal eye is out of the recommended spec for non-transition amplitude at 500mV nominal. According to the errata for MPC8379E, we should make a change to the recommended setting from essentially nothing at this time to 0b001 for SATA.
Signed-off-by: Jerry Huang Chang-Ming.Huang@freescale.com CC: Kim Phillips kim.phillips@freescale.com
changes for v2:
- use clrsetbits_be32 to clear and set the value
applied to 83xx/master, thanks.
Kim