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| author | Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> | 2019-03-28 23:11:50 +0300 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-04-25 01:00:49 +0300 |
| commit | d1aa159d999f876e28bb200cca69a0a8c86ed888 (patch) | |
| tree | fbf3622e21d46510610f44a1854983462524a5ff /configs/socfpga_socrates_defconfig | |
| parent | 4e829e9841f80c540150a14b4d12169139a0b7b9 (diff) | |
| download | u-boot-d1aa159d999f876e28bb200cca69a0a8c86ed888.tar.xz | |
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>
Diffstat (limited to 'configs/socfpga_socrates_defconfig')
0 files changed, 0 insertions, 0 deletions