Hi e2e experts,
I followed the steps http://processors.wiki.ti.com/index.php/All_This_For_1_Second_Boot to speed up the boot procedure for my OMAPL138 board.
It was found that the limitation is mainly from reading data out of SD card.
The U-Boot is from TI PSP-03.21.00.04_LCDK. See more information below (and SD card infor).
U-Boot > version
U-Boot 2010.12 (Nov 13 2013 - 15:50:44)
U-Boot > mmcinfo Device: davinci Manufacturer ID: 27 OEM: 5048 Name: SD04G Tran Speed: 25000000 Rd Block Len: 512 SD version 2.0 High Capacity: Yes Capacity: 3980394496 Bus Width: 4-bit
The clock signal during read is shown in the attachment. The clock runs 8 periods (4 bytes) and then wait ca. 3us. After completed reading the uImage, it runs continusly again.
Can anybody tell me what's wrong? Is there possiblility to make the delay between two reading smaller?
Thanks.
