DFI FS053, Руководство пользователя

Страница: 30 / 31

www.dfi.com
30
Appendix A - Compatibility
Appendix A
► Introduction
The hardware update from revision A (Rev. A) to B (Rev. B) results in some changes of set-
tings, and is followed by software updates required by downward compatibility. Changes are
detailed, listed, and compared in this Chapter.
► Examine Procured Revision
The revision of the system is printed on the bottom side of the board. The location is illus-
trated in the diagram below. Currently there have been two versions already officially released,
which are Rev. A and Rev. B.
Bottom View (Rear I/O on the Right)
REV
. A REV
. B
► Boot Device Select
Default settings of the Boot Device Select are different between CPU versions and board ver-
sions. Boot Device can be configured via the 8-pin switch (i.e. SW5) as instructed in Chapter
2. For initial setup, it is strongly suggested that the system is booted from the default boot
device as listed below.
► Panel Backward Compatibility
Along with the Rev. B update, the software parameters were also modified and optimized
specifically for Rev. B design and for a verified panel — AM-800480R3TMQW-T31H. For the
previous Rev. A version, the software parameters were optimized specifically for Rev. A design
and for a verified panel — OT070UADDBT-00. The Rev. B software parameters, in addition, can
be manually re-configured to support the panel — OT070UADDBT-00 — for panel backward
compatibility. Please follow the multi-panel switching instructions below to switch between the
configurations preset for the two said panels on a Rev. B system. The default parameters of
Rev. B are for the panel — AM-800480R3TMQW-T31H.
Board Revision Verified Panel Model
Rev. A OT070UADDBT-00
Rev. B
AM-800480R3TMQW-T31H, OT070UADDBT-00
(software switched)
► Multi-panel Switching Guide
To switch between the two verified panel models on Rev. B systems, two methods are pro-
vided and instructed below:
Method 1: U-Boot command via UART console
1. Connect the board to a UART serial console via the debug UART port.
2. Power on the system, and press ENTER when the line “Hit any key to stop autoboot:”
appears as shown below.
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Board Revision CPU version Default Boot Device
Rev. A
Quad eMMC
DualLite eMMC
Rev. B
Quad SPI
DualLite eMMC
Appendix A - Compatibility