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CHROMIUM: tegra: asymptote: Suppress touch noise when on battery

Currently the atmel touch controller on asymptote will generate
a lot of touch noise when the AC supply is removed and on battery.
This patch tunes the parameter IDLEGCAFDEPTH and ACTVGCAFDEPTH of
the touch controller object T28 to suppress these noise.

BUG=None
TEST=Manually tested on Asymptote and confirmed false detection is
suppressed when AC supply is disconnected.

Change-Id: Ia2e3e8e52eab1073bd2fa026575e5d070e9dadb6
Signed-off-by: Yufeng Shen <miletus@chromium.org>
Reviewed-on: http://gerrit.chromium.org/gerrit/6234
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
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1 parent 4398200 commit b5c8a057478e56805613f7169340d9df5121a011 @yufengshen yufengshen committed Aug 18, 2011
Showing with 1 addition and 1 deletion.
  1. +1 −1 arch/arm/mach-tegra/board-seaboard.c
@@ -735,7 +735,7 @@ static const u8 asymptote_mxt_config_data[] = {
/* MXT_PROCI_TWOTOUCH(27) */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* MXT_SPT_CTECONFIG(28) */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x28, 0x28, 0x00,
/* MXT_PROCI_GRIP(40) */
0x00, 0x00, 0x00, 0x00, 0x00,
/* MXT_PROCI_PALM(41) */

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