Hello,
My customer has a question about PINMUX configuration when booting from NOR Flash.
Please note they are currently using Legacy NOR boot. Not AIS boot.
The bootloader document says:
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Peripheral Configuration: Peripheral configuration settings applied during boot are not necessarily preserved when boot completes. If your application code uses the same peripheral that boots the device, your application should perform the normal procedure to initialize and configure that peripheral after boot. The exceptions to this rule are LPSC and pinmux settings, which are preserved after boot completes
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This means something unexpected pin state could happen if ROM Bootloarder handled PINMUX configuration wrongly. And as you know, this could cause fatal error in their system. So now they want to verify the ROM bootloader will configure only for EMIF_A for its boot process and never configure PINMUX for other peripherals. I believe ROM bootloader is actually doing so, but they are saying it is essential to get the evidence from TI side. Could you please confirm ?
Best Regards,
Naoki Kawada
