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kirby: disable internal pull resistors on DP transmitter

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This disables the internal pull resistors for SLIM_PD_BUF
and SLIM_CABLE_DET_BUF as per frh's advice.

Signed-off-by: David Hendricks <dhendrix@chromium.org>
BUG=none
BRANCH=none
TEST=Display works on Kirby without rework

Change-Id: I8b5fa56a7a0004ed1df5a115913d454e1d66750d
Reviewed-on: https://chromium-review.googlesource.com/167179
Reviewed-by: Ronald Minnich <rminnich@google.com>
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
David Hendricks 2013-08-27 20:29:53 -07:00 • committed by chrome-internal-fetch
commit 5a71c28c4e
1 changed files with 3 additions and 0 deletions
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3
src/mainboard/google/kirby/romstage.c
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@ -129,6 +129,9 @@ static void setup_gpio(void)
gpio_direction_input(GPIO_X12); // POWER_GPIO
gpio_set_pull(GPIO_X12, GPIO_PULL_NONE);
gpio_set_pull(GPIO_H01, GPIO_PULL_NONE); // SLIM_PD_BUF
gpio_set_pull(GPIO_H03, GPIO_PULL_NONE); // SLIM_CABLE_DET_BUF
}
static void setup_memory(struct mem_timings *mem, int is_resume)