asurada: enable 1.8v selection for 1.8v signals

This change enables 1.8v selection for signals which are 1.8v to
prevent leakage in chip.

This change also change NC pins of ADC to output low due to they
don't have pull-down capability.

BUG=b:173490375
BRANCH=none
TEST=save ~3.5mw on asurada.

Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
Change-Id: Ib31bd78beeda735ba49e3582b0c0dbb658c8c209
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2606180
Reviewed-by: Ayo Wu <ayowu@google.com>
Reviewed-by: Eric Yilun Lin <yllin@chromium.org>

1 files changed, 17 insertions, 14 deletions

diff --git a/board/asurada/gpio.inc b/board/asurada/gpio.inc
index f4bc1da2a8..8170faa78d 100644
--- a/board/asurada/gpio.inc
+++ b/board/asurada/gpio.inc
@@ -62,7 +62,7 @@ GPIO_INT(AC_PRESENT,         PIN(E, 5), GPIO_INT_BOTH | GPIO_HIB_WAKE_HIGH,
 #endif
 GPIO_INT(UART1_RX,           PIN(B, 0), GPIO_INT_FALLING,
          uart_deepsleep_interrupt) /* UART_DEBUG_TX_EC_RX */
-GPIO_INT(WP,                 PIN(I, 4), GPIO_INT_BOTH,
+GPIO_INT(WP,                 PIN(I, 4), GPIO_INT_BOTH | GPIO_SEL_1P8V,
          switch_interrupt) /* EC_FLASH_WP_OD */
 GPIO_INT(SPI0_CS,            PIN(M, 5), GPIO_INT_FALLING,
          spi_event)        /* SPI slave Chip Select -- AP_SPI_EC_CS_L */
@@ -77,14 +77,14 @@ GPIO(PG_MT6360_ODL,          PIN(F, 1), GPIO_INPUT)
 GPIO(PG_PP5000_A_ODL,        PIN(A, 6), GPIO_INPUT)
 GPIO(EN_SLP_Z,               PIN(E, 3), GPIO_OUT_LOW)
 GPIO(SYS_RST_ODL,            PIN(B, 6), GPIO_ODR_LOW)
-GPIO(EC_BL_EN_OD,            PIN(B, 5), GPIO_ODR_LOW)
+GPIO(EC_BL_EN_OD,            PIN(B, 5), GPIO_ODR_LOW | GPIO_SEL_1P8V)
 
 /* MKBP event synchronization */
-GPIO(EC_INT_L,               PIN(E, 6), GPIO_ODR_HIGH) /* EC_AP_INT_ODL */
+GPIO(EC_INT_L,               PIN(E, 6), GPIO_ODR_HIGH | GPIO_SEL_1P8V) /* EC_AP_INT_ODL */
 
 /* USB and USBC Signals */
 GPIO(DP_AUX_PATH_SEL,        PIN(G, 0), GPIO_OUT_HIGH)
-GPIO(EC_DPBRDG_HPD_ODL,      PIN(J, 0), GPIO_ODR_HIGH)
+GPIO(EC_DPBRDG_HPD_ODL,      PIN(J, 0), GPIO_ODR_HIGH | GPIO_SEL_1P8V)
 GPIO(EN_PP5000_USB_A0_VBUS,  PIN(B, 7), GPIO_OUT_LOW)
 GPIO(USB_C0_FRS_EN,          PIN(H, 3), GPIO_OUT_LOW)
 
@@ -98,8 +98,8 @@ GPIO(EC_USB_C0_MUX_RESET_L,  PIN(D, 7), GPIO_OUT_HIGH)
 /* I2C pins - Alternate function below configures I2C module on these pins */
 GPIO(I2C_A_SCL,              PIN(B, 3), GPIO_INPUT) /* I2C_CHG_BATT_SCL */
 GPIO(I2C_A_SDA,              PIN(B, 4), GPIO_INPUT) /* I2C_CHG_BATT_SDA */
-GPIO(I2C_B_SCL,              PIN(C, 1), GPIO_INPUT) /* I2C_SENSOR_SCL */
-GPIO(I2C_B_SDA,              PIN(C, 2), GPIO_INPUT) /* I2C_SENSOR_SDA */
+GPIO(I2C_B_SCL,              PIN(C, 1), GPIO_INPUT | GPIO_SEL_1P8V) /* I2C_SENSOR_SCL */
+GPIO(I2C_B_SDA,              PIN(C, 2), GPIO_INPUT | GPIO_SEL_1P8V) /* I2C_SENSOR_SDA */
 GPIO(I2C_C_SCL,              PIN(F, 6), GPIO_INPUT) /* I2C_USB_C0_SCL */
 GPIO(I2C_C_SDA,              PIN(F, 7), GPIO_INPUT) /* I2C_USB_C0_SCL */
 GPIO(I2C_E_SCL,              PIN(E, 0), GPIO_INPUT) /* I2C_USB_C1_SCL */
@@ -117,7 +117,7 @@ GPIO(EC_X_GPIO3,             PIN(J, 1), GPIO_INPUT)
 
 /* Alternate functions GPIO definitions */
 ALTERNATE(PIN_MASK(B, 0x18), 1, MODULE_I2C, 0) /* I2C A */
-ALTERNATE(PIN_MASK(C, 0x06), 1, MODULE_I2C, 0) /* I2C B */
+ALTERNATE(PIN_MASK(C, 0x06), 1, MODULE_I2C, GPIO_SEL_1P8V) /* I2C B */
 ALTERNATE(PIN_MASK(F, 0xC0), 1, MODULE_I2C, 0) /* I2C C */
 ALTERNATE(PIN_MASK(E, 0x81), 1, MODULE_I2C, 0) /* I2C E */
 
@@ -134,21 +134,24 @@ ALTERNATE(PIN_MASK(I, 0x4F), 0, MODULE_ADC, 0) /* ADC 0,1,2,3,6 */
 ALTERNATE(PIN_MASK(M, 0x33), 0, MODULE_SPI, 0) /* SPI */
 
 /* Unimplemented Pins  */
-GPIO(SET_VMC_VOLT_AT_1V8,    PIN(D, 4), GPIO_INPUT | GPIO_PULL_DOWN)
-GPIO(EN_PP3000_VMC_PMU,      PIN(D, 2), GPIO_INPUT | GPIO_PULL_DOWN)
+GPIO(SET_VMC_VOLT_AT_1V8,    PIN(D, 4), GPIO_INPUT | GPIO_PULL_DOWN | GPIO_SEL_1P8V)
+GPIO(EN_PP3000_VMC_PMU,      PIN(D, 2), GPIO_INPUT | GPIO_PULL_DOWN | GPIO_SEL_1P8V)
 GPIO(PACKET_MODE_EN,         PIN(A, 3), GPIO_INPUT | GPIO_PULL_DOWN)
 /* b/160218054: behavior not defined */
 /* *_ODL pin has external pullup so don't pull it down. */
 GPIO(USB_A0_FAULT_ODL,       PIN(A, 7), GPIO_INPUT)
 GPIO(CHARGER_PROCHOT_ODL,    PIN(C, 3), GPIO_INPUT)
 GPIO(PG_MT6315_GPU_ODL,      PIN(H, 6), GPIO_INPUT)
-GPIO(EN_PP3000_SD_U,         PIN(G, 1), GPIO_INPUT | GPIO_PULL_DOWN)
+GPIO(EN_PP3000_SD_U,         PIN(G, 1), GPIO_INPUT | GPIO_PULL_DOWN | GPIO_SEL_1P8V)
 /* reserved for future use */
 GPIO(CCD_MODE_ODL,           PIN(C, 4), GPIO_INPUT)
-
-/* NC pins, enable internal pull-up to avoid floating state. */
-GPIO(NC_GPI5,                PIN(I, 5), GPIO_INPUT | GPIO_PULL_UP)
-GPIO(NC_GPI7,                PIN(I, 7), GPIO_INPUT | GPIO_PULL_UP)
+/*
+ * ADC pins don't have internal pull-down capability,
+ * so we set them as output low.
+ */
+GPIO(NC_GPI5,                PIN(I, 5), GPIO_OUT_LOW)
+GPIO(NC_GPI7,                PIN(I, 7), GPIO_OUT_LOW)
+/* NC pins, enable internal pull-up/down to avoid floating state. */
 #ifdef BOARD_ASURADA_REV0
 GPIO(NC_GPE5,                PIN(E, 5), GPIO_INPUT | GPIO_PULL_UP)
 #else /* HAYATO */