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| author | Tom Rini <trini@konsulko.com> | 2016-10-12 08:32:09 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-10-12 13:59:26 -0400 |
| commit | 5ebd27d860ec0c6e36f1b0f973653fe66a7360be (patch) | |
| tree | 71ba0f39cc03c131889ce51803d85cf4c49b2941 /board | |
| parent | f812574e61e9bfe37e76e620606fd1a65cc9cdc2 (diff) | |
| parent | 00bcaedd5c4063c677d16af264bbcb991fb9675c (diff) | |
| download | u-boot-5ebd27d860ec0c6e36f1b0f973653fe66a7360be.tar.gz | |
Merge branch 'master' of git://git.denx.de/u-boot-x86
Diffstat (limited to 'board')
| -rw-r--r-- | board/congatec/conga-qeval20-qa3-e3845/README | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/board/congatec/conga-qeval20-qa3-e3845/README b/board/congatec/conga-qeval20-qa3-e3845/README new file mode 100644 index 0000000000..98ff992a3d --- /dev/null +++ b/board/congatec/conga-qeval20-qa3-e3845/README @@ -0,0 +1,23 @@ +------------------------------ +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. |