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authorTom Rini <trini@konsulko.com>2016-10-12 08:32:09 -0400
committerTom Rini <trini@konsulko.com>2016-10-12 13:59:26 -0400
commit5ebd27d860ec0c6e36f1b0f973653fe66a7360be (patch)
tree71ba0f39cc03c131889ce51803d85cf4c49b2941 /board
parentf812574e61e9bfe37e76e620606fd1a65cc9cdc2 (diff)
parent00bcaedd5c4063c677d16af264bbcb991fb9675c (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-x86
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+------------------------------
+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.