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| author | Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> | 2019-03-28 21:11:50 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-04-25 00:00:49 +0200 |
| commit | d1aa159d999f876e28bb200cca69a0a8c86ed888 (patch) | |
| tree | fbf3622e21d46510610f44a1854983462524a5ff /board/ebv | |
| parent | 4e829e9841f80c540150a14b4d12169139a0b7b9 (diff) | |
| download | u-boot-d1aa159d999f876e28bb200cca69a0a8c86ed888.tar.gz u-boot-d1aa159d999f876e28bb200cca69a0a8c86ed888.tar.bz2 u-boot-d1aa159d999f876e28bb200cca69a0a8c86ed888.zip | |
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 'board/ebv')
| -rw-r--r-- | board/ebv/socrates/qts/iocsr_config.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/board/ebv/socrates/qts/iocsr_config.h b/board/ebv/socrates/qts/iocsr_config.h index 011fa2bac3..18b9c6ce4d 100644 --- a/board/ebv/socrates/qts/iocsr_config.h +++ b/board/ebv/socrates/qts/iocsr_config.h @@ -108,7 +108,7 @@ const unsigned long iocsr_scan_chain2_table[] = { 0x00018004, 0x06001209, 0x00004000, - 0x20002412, + 0x20042412, 0x00904800, 0x00000030, 0x80000000, |