Messages in this thread | | | Date | Fri, 26 Jul 2013 13:38:24 -0500 | From | Rob Herring <> | Subject | Re: [PATCH 4/5] sata, highbank: set tx_atten override bits |
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On 07/26/2013 11:22 AM, Mark Rutland wrote: > On Fri, Jul 26, 2013 at 04:11:57PM +0100, Mark Langsdorf wrote: >> Some board designs do not drive the SATA transmit lines within the >> specification. The ECME can provide override settings, on a per board >> basis, to bring the transmit lines within spec. Read those settings >> from the DTB and program them in. > > How variable is the use of this property going to be? Would it instead > be possible to decide that this was necessary, and choose the > appropriate values based on a compatible property?
It is based on compliance testing of the particular board design. Basing on a compatible property would not work in this case.
Rob
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