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arm: mvebu: theadorable: Add PEX-switch detection and reset code

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Sometimes the PCIe link for the PEX-switch will not come-up. In this case,
the board is not in a usable state. This patch makes sure that in this
case a soft-reset is issued. If this soft-reset does not result in the
PEX-switch being detected after some soft-reset cycles, an I2C message
is sent to the uC to issue a complete power-cycle of the board.

Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Stefan Roese
2016-04-08 15:58:30 +02:00
parent 8ac71da94d
commit 169a855017
2 changed files with 70 additions and 0 deletions
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include/configs/theadorable.h
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@@ -104,6 +104,7 @@
#define CONFIG_PCI
#define CONFIG_PCI_MVEBU
#define CONFIG_PCI_PNP
#define CONFIG_BOARD_LATE_INIT /* for PEX switch test */
#endif
#endif