[U-Boot] [PATCH 2/2] mx6slevk: imximage.cfg: update to fix tINIT3 and tIH-CA violations

[Stefano Babic]

On 05/04/2016 15:43, Tom Rini wrote:
> On Tue, Apr 05, 2016 at 04:53:28PM +0800, Peng Fan wrote:
>> Hi Tom,
>>
>> I know this already merged to i.mx tree. I still have a question for the
>> tIH-CA violation.
> 
> It's not in mainline 'tho so it can always come out :)

Right - it is still in u-boot-imx, and I can revert it before my PR.

> 
>> In my side, the value is ok. clk is 400MHz.
>> (0x30 * 256.0) * (1000000000000.0/400000000.0) = 468.75ps.
>> And according to spec, to 800M date rate, the minimum tIH value is 290ps.
>>
>> So I wonder how in your side it is tIH-CA violation.
> 
> The board we measured this on is based on the mx6slevk and this
> particular part of the board (layout, etc) is unchanged.  Micron put the
> board under analysis and measured these violations (along with that we
> don't issue a reset before configuring CS1, I still might try and push
> that change up for the EVK at least, not armadillo tho).

Stefano

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