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| author | Vincent Palatin <vpalatin@chromium.org> | 2015-05-15 14:02:35 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-05-16 01:42:13 +0000 |
| commit | b95215b608b7598b4b44546917b3d75a03a0e432 (patch) | |
| tree | eda4f752bc50d34b496e61447dd00003488e2b78 | |
| parent | a6d1e65cdf1d820bdcacf8b08defa5c12c2054cf (diff) | |
| download | chrome-ec-b95215b608b7598b4b44546917b3d75a03a0e432.tar.gz | |
ryu: set HPD as open-drain
The HotPlug Detect signal generated by the PD stack in DisplayPort
alternate mode is connected to a 1.8V GPIO on the T210 AP, we need to
set the GPIO output as open-drain.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=manual, probe the level with a voltmeter and see 1.8V.
Change-Id: I627befc61ed06c75dd7e32a8541bd6d8f8e95642
Reviewed-on: https://chromium-review.googlesource.com/271553
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | board/ryu/gpio.inc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/board/ryu/gpio.inc b/board/ryu/gpio.inc index 0cbf0b55a8..d7063ed653 100644 --- a/board/ryu/gpio.inc +++ b/board/ryu/gpio.inc @@ -76,7 +76,7 @@ GPIO(USBC_MUX_CONF0, D, 3, GPIO_OUT_LOW) GPIO(USBC_MUX_CONF1, D, 9, GPIO_OUT_LOW) GPIO(USBC_MUX_CONF2, E, 0, GPIO_OUT_LOW) -GPIO(USBC_DP_HPD, C, 1, GPIO_OUT_LOW) +GPIO(USBC_DP_HPD, C, 1, GPIO_ODR_LOW) /* Inputs */ GPIO(BOARD_ID0, E, 11, GPIO_INPUT) |