[flashrom] Try add support for SST45LF010
originalraven at hotmail.com
Sun Nov 16 10:00:33 CET 2014
Am 07.08.2014 um 14:57 schrieb Stefan Tauner:
> On Thu, 7 Aug 2014 12:58:23 +0200
> The Raven <originalraven at hotmail.com> wrote:
>> Can i lower the spi frequency with serprog? Maybe the chip is overclocked?
> The datasheet states "10 MHz Max Clock Frequency". AFAIK you are using
> an Arduino which has a 16 MHz clock, but the maximum SPI frequency the
> CPU supports is CLK_cpu/2, i.e. 8 MHz, shouldn't be a problem.
> Anyway, serprog supports an spispeed parameter but the programmer has
> to support that too (no idea if GNUtoo's code does that).
> flashrom -p serprog:dev=/dev/device:baud,spispeed=2M
>> Or maybe this is a "clone" chip? Not a "real" SST?
> Possible in theory, but why would it reply with 0x7fff to RDID
> commands? I am pretty certain it is an electrical issue on the SPI bus.
I tried another chip and got the same results. :-(
The wires are short as possible (8cm incl. serprog/arduino wiring).
All other chips work as the should, only this chip give me a wrong reply
of "id1 0x5f, id2 0xdf".
Have no clue whats wrong.
I give up.
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