after initializing the SD Card switching Operation is 12 MHz, and we load data from SD Card. But it break during loading MLO to internal RAM. Around 3,5s nothing happens, but afterwards we see constantly traffic, it looks like permanent re-initializing.
it also needs long time between Output SYS_PWRON_RESET_OUT of OMAP4430 and start of I2C initializing of PMIC for SD-Card Boot. Normally it should be 4,6ms but we need 10,7ms.
We assume that the high security key (I1) is causing trouble. Is there any possibility to avoid that key or to re-Programm that security key ? In the past we used OMAP4430FCBS without any security key. We bought this lot from non-Franchise, Excess Inventory, the parts are genuine and had been factory sealed and labeled, no fake.
Thanks a lot for any good idea to solve that problem. We appreciate your gentle and fast advise.
AME Advanced Memory Electronics