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authorWolfgang Denk <wd@fifi.denx.de>2006-06-16 16:14:28 +0200
committerWolfgang Denk <wd@fifi.denx.de>2006-06-16 16:14:28 +0200
commitcebd1fcec0f7a484ca7e8ecce76c6d9c211368ec (patch)
treed49f75070d6edabecb0fad3ee1ca712d513e4955
parentcd65a3dc872407e6278062246a4eb5e10f180d7e (diff)
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Fix TRAB channel switching delay for trab_fkt.bin standalone applikation
Patch by Martin Krause, 08 Nov 2005 In tsc2000_read_channel() the delay after setting the multiplexer to a temperature channel is increased from 1,5 ms to 10 ms. This is to allow the multiplexer inputs to stabilize after huge steps of the input signal level.
-rw-r--r--CHANGELOG7
-rw-r--r--board/trab/tsc2000.c2
2 files changed, 8 insertions, 1 deletions
diff --git a/CHANGELOG b/CHANGELOG
index 63b23c1..0e809f8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,13 @@
Changes since U-Boot 1.1.4:
======================================================================
+* Fix TRAB channel switching delay for trab_fkt.bin standalone applikation
+ In tsc2000_read_channel() the delay after setting the multiplexer
+ to a temperature channel is increased from 1,5 ms to 10 ms. This
+ is to allow the multiplexer inputs to stabilize after huge steps
+ of the input signal level.
+ Patch by Martin Krause, 08 Nov 2005
+
* Adjust TQM5200 make targets
Make the automatic CS configuration the default.
The dedicated configurations CONFIG_TQM5200_AA, CONFIG_TQM5200_AB
diff --git a/board/trab/tsc2000.c b/board/trab/tsc2000.c
index ca68682..382a85b 100644
--- a/board/trab/tsc2000.c
+++ b/board/trab/tsc2000.c
@@ -223,7 +223,7 @@ u16 tsc2000_read_channel (unsigned int channel)
u16 res;
tsc2000_set_mux(channel);
- udelay(3 * TSC2000_DELAY_BASE);
+ udelay(20 * TSC2000_DELAY_BASE);
tsc2000_write(TSC2000_REG_ADC, 0x2036);
adc_wait_conversion_done ();