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u-boot/board/ebv/socrates
Simon Goldschmidt d1aa159d99 arm: socfpga: socrates: make rtc work
This patch makes the on-board RTC work on the socfpga_socrates board.
This rtc is present on the board, but it does not work (fails with a
timeout).

This patch adds a weak pull-up on the I2C0-SCL pin connected to the m41t82
RTC on this board. While the SDA line has a pull-up on the pcb, the pull-up
on the SCL line seems to be missing. To work around this, enable the
weak-pull-up feature on this pin.

After applying this patch, the rtc timeout is gone and the 'date' command
can access the rtc chip.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2019-04-25 00:00:49 +02:00
..
qts arm: socfpga: socrates: make rtc work 2019-04-25 00:00:49 +02:00
MAINTAINERS arm: socfpga: Repair SoCrates board 2015-11-30 13:30:19 +01:00
Makefile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
socfpga.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00