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Ryu: Share SensorHub UART control with Servo

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Previously the EC UART connected to the SensorHub console
was being driven push/pull potentially fighting with a
connected servo.  This way servo wins, but at least we
don't drive the line in opposite directions causing a
large current flow.

Signed-off-by: Anton Staaf <robotboy@chromium.org>

BRANCH=None
BUG=None
TEST=make buildall -j

Change-Id: I02b8e09af6c902b523494b757f4bc7ea4365df2e
Reviewed-on: https://chromium-review.googlesource.com/255954
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Vic Yang <victoryang@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
This commit is contained in:
Anton Staaf
2015-03-04 11:49:50 -08:00
committed by ChromeOS Commit Bot
parent 9e9ccfa24b
commit d32be0292f
1 changed files with 3 additions and 1 deletions
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4
board/ryu/gpio.inc
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@@ -117,10 +117,12 @@ GPIO(AP_UART_RX, B, 7, GPIO_INPUT, NULL)
UNIMPLEMENTED(AP_RESET_L)
#define GPIO_ODR_UP GPIO_OPEN_DRAIN | GPIO_PULL_UP
ALTERNATE(B, 0x0008, 5, MODULE_USB_PD, 0) /* SPI1: SCK(PB3) */
ALTERNATE(B, 0x0002, 2, MODULE_USB_PD, 0) /* TIM3_CH4: PB1 */
ALTERNATE(B, 0x00C0, 7, MODULE_USART, 0) /* USART1: PB6/PB7 */
ALTERNATE(D, 0x0060, 7, MODULE_UART, GPIO_PULL_UP) /* USART2: PD4/PD5 */
ALTERNATE(C, 0x0C00, 7, MODULE_USART, 0) /* USART3: PC10/PC11 */
ALTERNATE(C, 0x0C00, 7, MODULE_USART, GPIO_ODR_UP) /* USART3: PC10/PC11 */
ALTERNATE(A, 0xC600, 4, MODULE_I2C, 0) /* I2C SLAVE:PA9/10 MASTER:PA14/15 */
ALTERNATE(A, 0x1800,14, MODULE_USB, 0) /* USB: PA11/12 */