Andy Shevchenko ebb2818bcb x86: congatec: conga-qeval20-qa3-e3845: Remove dead code 3 anos atrás
..
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.gitignore 7a47a0827d x86: baytrail: Add .gitignore for ACPI enabled boards 8 anos atrás
Kconfig 252d41f1ae x86: baytrail: Drop EFI-specific test logics 6 anos atrás
MAINTAINERS 6a5691e297 x86: Add defconfig for theadorable-x86-conga with PCIe x4 blobs 6 anos atrás
Makefile ebb2818bcb x86: congatec: conga-qeval20-qa3-e3845: Remove dead code 3 anos atrás
README df233e734f x86: conga-qeval20-qa3: Add README to explain the console UART options 7 anos atrás
conga-qeval20-qa3.c 5255932f01 common: Move some board functions out of common.h 4 anos atrás
dsdt.asl 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 6 anos atrás

README

------------------------------
U-Boot console UART selection:
------------------------------

The U-Boot port for this congatec board currently supports two different
configurations (defconfig files). The only difference is the UART that
is used as the U-Boot console UART. The default defconfig file:

conga-qeval20-qa3-e3845_defconfig

provides this console on the UART0 which is provided via a Winbond
Super-IO chip connected on the congatec Qseven 2.0 evaluation carrier
board (conga-QEVAL). This UART is the one provided with a SubD9
connector on the mainboard (the low one). The 2nd defconfig file:

conga-qeval20-qa3-e3845-internal-uart_defconfig

provides the U-Boot console on the BayTrail internal legacy UART,
which is routed from the QSeven SoM to the X300 connector on the
baseboard. Here is called COM2. The baseboard already provides the
RS232 level shifters. So a TTL-USB UART adapter does not work in
this case. The signals need to get connected directly to the
RS232 level signals of the PC UART via some adapter cable.