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authorSimon Goldschmidt <simon.k.r.goldschmidt@gmail.com>2019-03-28 21:11:50 +0100
committerMarek Vasut <marex@denx.de>2019-04-25 00:00:49 +0200
commitd1aa159d999f876e28bb200cca69a0a8c86ed888 (patch)
treefbf3622e21d46510610f44a1854983462524a5ff /board/ebv/socrates
parent4e829e9841f80c540150a14b4d12169139a0b7b9 (diff)
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/socrates')
-rw-r--r--board/ebv/socrates/qts/iocsr_config.h2
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,