diff options
| author | Nick Sanders <nsanders@chromium.org> | 2017-07-17 22:18:31 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-07-21 21:24:13 -0700 |
| commit | 15819d06c89ac7c2c245b3d0eea3f2f4116aaaf7 (patch) | |
| tree | 61956267fb698ee922e78280a22585095fec9d53 /board/tigertail/gpio.inc | |
| parent | 1339fff8535e1378f5b34022075bb5b63ca0e522 (diff) | |
| download | chrome-ec-15819d06c89ac7c2c245b3d0eea3f2f4116aaaf7.tar.gz | |
tigertail: support vref on uart
Support a level shifter for both 1.8v and 3.3v
uarts on SBU.
BRANCH=None
BUG=b:35849284
TEST=ran on tigertail, both 1.8v and 3.3v detected.
Change-Id: I76d545b582c6ed15086941513d5de4cd6783ac16
Signed-off-by: Nick Sanders <nsanders@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/575595
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Diffstat (limited to 'board/tigertail/gpio.inc')
| -rw-r--r-- | board/tigertail/gpio.inc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/board/tigertail/gpio.inc b/board/tigertail/gpio.inc index 8fcc46cd77..107d3b2a2e 100644 --- a/board/tigertail/gpio.inc +++ b/board/tigertail/gpio.inc @@ -22,6 +22,8 @@ GPIO(USB_C_OE_N, PIN(B, 5), GPIO_OUT_HIGH) GPIO(ST_UART_LVL_DIS, PIN(B, 10), GPIO_OUT_HIGH) GPIO(ST_UART_TX_DIR, PIN(B, 12), GPIO_OUT_HIGH) GPIO(ST_UART_TX_DIR_N, PIN(B, 15), GPIO_OUT_LOW) +/* SBU_VSET, 1=1.8V, 0=3.3V */ +GPIO(ST_UART_VREF, PIN(B, 7), GPIO_OUT_HIGH) GPIO(LED2_G_L, PIN(A, 5), GPIO_OUT_HIGH) GPIO(LED2_B_L, PIN(A, 8), GPIO_OUT_HIGH) |