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| author | Wolfgang Denk <wd@fifi.denx.de> | 2006-06-16 16:14:28 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@fifi.denx.de> | 2006-06-16 16:14:28 +0200 |
| commit | cebd1fcec0f7a484ca7e8ecce76c6d9c211368ec (patch) | |
| tree | d49f75070d6edabecb0fad3ee1ca712d513e4955 | |
| parent | cd65a3dc872407e6278062246a4eb5e10f180d7e (diff) | |
| download | u-boot-imx-cebd1fcec0f7a484ca7e8ecce76c6d9c211368ec.zip u-boot-imx-cebd1fcec0f7a484ca7e8ecce76c6d9c211368ec.tar.gz u-boot-imx-cebd1fcec0f7a484ca7e8ecce76c6d9c211368ec.tar.bz2 | |
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-- | CHANGELOG | 7 | ||||
| -rw-r--r-- | board/trab/tsc2000.c | 2 |
2 files changed, 8 insertions, 1 deletions
@@ -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 (); |