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Fizz: Add GPIOs used for CEC

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The Fizz hardware has three pins for CEC. One GPIO is used
as a pull-up. It is always an output and always high. The
second GPIO is a data output. The third GPIO is the data
input that can also be configured as a timer input (TA1).

Signed-off-by: Stefan Adolfsson <sadolfsson@chromium.org>

BUG=b:76467407
BRANCH=none
TEST=Read and write the newly added GPIOs using ectool

Change-Id: Ia33b36a0cdaa40fd1a4f7aa66a092b5833bf5cf8
Reviewed-on: https://chromium-review.googlesource.com/1030219
Commit-Ready: Stefan Adolfsson <sadolfsson@chromium.org>
Tested-by: Stefan Adolfsson <sadolfsson@chromium.org>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This commit is contained in:
Stefan Adolfsson
2018-04-24 10:21:17 +02:00
committed by chrome-bot
parent 436dd71e5d
commit bdc8b02528
2 changed files with 7 additions and 0 deletions
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3
board/fizz/board.h
View File

@@ -44,6 +44,9 @@
#define WIRELESS_GPIO_WLAN GPIO_WLAN_OFF_L
#define WIRELESS_GPIO_WLAN_POWER GPIO_PP3300_DX_WLAN
#define WIRELESS_GPIO_WWAN GPIO_PP3300_DX_LTE
#define CEC_GPIO_OUT GPIO_CEC_OUT
#define CEC_GPIO_IN GPIO_CEC_IN
#define CEC_GPIO_PULL_UP GPIO_CEC_PULL_UP
#define CONFIG_FANS 1
#define CONFIG_FAN_RPM_CUSTOM
#define CONFIG_THROTTLE_AP

4
board/fizz/gpio.inc
View File

@@ -84,6 +84,10 @@ GPIO(USB4_ENABLE, PIN(0, 0), GPIO_OUT_LOW) /* Front port 1 */
GPIO(USB5_ENABLE, PIN(B, 1), GPIO_OUT_LOW) /* Front port 2 */
GPIO(USB_A_CHARGE_EN_L, PIN(A, 5), GPIO_OUT_LOW)
GPIO(CEC_OUT, PIN(3, 6), GPIO_OUT_HIGH | GPIO_OPEN_DRAIN)
GPIO(CEC_IN, PIN(4, 0), GPIO_INPUT)
GPIO(CEC_PULL_UP, PIN(D, 3), GPIO_OUT_HIGH)
/* Board ID */
GPIO(BOARD_VERSION1, PIN(C, 4), GPIO_INPUT) /* Board ID bit0 */
GPIO(BOARD_VERSION2, PIN(C, 2), GPIO_INPUT) /* Board ID bit1 */