27 Aug
2012
27 Aug
'12
8:17 a.m.
On 22/08/2012 21:25, Matt Sealey wrote:
PCBID pads seem to need time to settle due to external pulldowns, otherwise we are reading floating GPIO pins with implicit pad pullups and get the wrong data. However we can't "wait" at the time we need them before relocation, since timers are not available. The time taken to get from DCD to the code requiring the pads set seems to be more than long enough (even with caches enabled).
We have space in the DCD due to the DDR settings changes to configure all the pad settings we need for this, plus the LED pad settings too which reduces the amount of code required later on.
Signed-off-by: Matt Sealey matt@genesi-usa.com
Applied to u-boot-imx, thanks.
Best regards, Stefano Babic
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