The pinmux settings are taken care of by the ROM boot code when it is
determined that a UART boot should take place, whether that is due to
initial switch settings or due to a fall back from another failed boot
mode (NAND or UHPI).

 

Regards,

Daniel

 

Daniel J. Allred

Software Applications

Catalog DSP / Emerging End Equipment

________________________________

From: ketan deshpande [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, April 18, 2007 1:14 AM
To: Linux DaVinci; Allred, Daniel
Cc: TI software support
Subject: Regarding UART/GPIO

 

Hi all,

I have a doubt:

  If the ARM processor's ROM bootloader(RBL) doesn't
read a valid UBL, it is going to always default to the
UART Boot Mode. It happens on the DVEVM, we checked. 

  But then, the UART0 pins are MUXED with GPIO35 and
36. On power-up, it is set to GPIO. It can be set by
software to UART. So who sets it to UART mode on DVEVM?

regards,
-Ketan

 

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