From 45a9c9b118936c2a64f806e64220194c9a159b04 Mon Sep 17 00:00:00 2001 From: "Brian J. Nemec" Date: Mon, 17 Aug 2020 13:48:49 -0700 Subject: waddledoo: Configure unused GPIOs as inputs Configure unused GPIOs as inputs to save power in deep sleep states. BUG=b:162318932 BRANCH=none TEST=make buildall TEST=flash waddledoo put device into S0iX or other low power state measure system and EC power consumption Signed-off-by: Brian Nemec Change-Id: Ie29c15d1c4947fe3d6665c66df476ac6b9ed943d Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2358903 Reviewed-by: Evan Green Reviewed-by: Diana Z --- board/waddledoo/gpio.inc | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/board/waddledoo/gpio.inc b/board/waddledoo/gpio.inc index 4f75cfe4a0..6a3eb1e570 100644 --- a/board/waddledoo/gpio.inc +++ b/board/waddledoo/gpio.inc @@ -126,3 +126,15 @@ ALTERNATE(PIN_MASK(B, 0x3C), 0, MODULE_I2C, 0) /* I2C7,I2C0 */ ALTERNATE(PIN_MASK(3, 0x48), 0, MODULE_I2C, 0) /* I2C5 */ ALTERNATE(PIN_MASK(9, 0x07), 0, MODULE_I2C, 0) /* I2C2, I2C1 SCL */ ALTERNATE(PIN_MASK(8, 0x80), 0, MODULE_I2C, 0) /* I2C1 SDA */ + +/* NC pins, enable internal pull-up to avoid floating state. */ +GPIO(GPIO32_NC, PIN(3, 2), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIO35_NC, PIN(3, 5), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIO41_NC, PIN(4, 1), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIO57_NC, PIN(5, 7), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIO81_NC, PIN(8, 1), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIO86_NC, PIN(8, 6), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIOC0_NC, PIN(C, 0), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIOD0_NC, PIN(D, 0), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIOD1_NC, PIN(D, 1), GPIO_INPUT | GPIO_PULL_UP) +GPIO(GPIOD6_NC, PIN(D, 6), GPIO_INPUT | GPIO_PULL_UP) -- cgit v1.2.1