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about boot
Added by shengyou gao almost 13 years ago
I wonder how the boot mode switch from SPI1 to UART1 using EXT_BOOT# signal? Thank very much.
Replies (2)
RE: about boot - Added by Michael Williamson almost 13 years ago
The EXT_BOOT# signal drives a small mux circuit on the SOM that changes the boot strap pull-up/pull-down options on the OMAP-L138 such that it will use UART0 instead of SPI1_CS0 as the primary boot device. If you need details about this, check the data sheets on the OMAP-L138 or the AM1808 regarding the boot modes.
Hope this helps.
-Mike
