Casta: initial EC image

Initial image for casta based on the most recent schematics available.

BUG=b:119174492
BRANCH=octopus
TEST=builds

Change-Id: Ie0575476d79fd8f6c5f697499bc8a660880348e3
Signed-off-by: Diana Z <dzigterman@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1347011
Reviewed-by: Jett Rink <jettrink@chromium.org>

6 files changed, 413 insertions, 0 deletions

diff --git a/board/casta/battery.c b/board/casta/battery.c
new file mode 100644
index 0000000000..6cb4fc5743
--- /dev/null
+++ b/board/casta/battery.c
@@ -0,0 +1,39 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Battery pack vendor provided charging profile
+ */
+
+#include "battery_fuel_gauge.h"
+#include "common.h"
+#include "util.h"
+
+/*
+ * Battery info for all casta battery types. Note that the fields
+ * start_charging_min/max and charging_min/max are not used for the charger.
+ * The effective temperature limits are given by discharging_min/max_c.
+ *
+ * Fuel Gauge (FG) parameters which are used for determining if the battery
+ * is connected, the appropriate ship mode (battery cutoff) command, and the
+ * charge/discharge FETs status.
+ *
+ * Ship mode (battery cutoff) requires 2 writes to the appropriate smart battery
+ * register. For some batteries, the charge/discharge FET bits are set when
+ * charging/discharging is active, in other types, these bits set mean that
+ * charging/discharging is disabled. Therefore, in addition to the mask for
+ * these bits, a disconnect value must be specified. Note that for TI fuel
+ * gauge, the charge/discharge FET status is found in Operation Status (0x54),
+ * but a read of Manufacturer Access (0x00) will return the lower 16 bits of
+ * Operation status which contains the FET status bits.
+ *
+ * The assumption for battery types supported is that the charge/discharge FET
+ * status can be read with a sb_read() command and therefore, only the register
+ * address, mask, and disconnect value need to be provided.
+ */
+const struct board_batt_params board_battery_info[] = {
+	/* TODO(b/119871861): Casta: battery datasheets and specs */
+};
+BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
+
+const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_TYPE_COUNT;
diff --git a/board/casta/board.c b/board/casta/board.c
new file mode 100644
index 0000000000..d5dc8833bf
--- /dev/null
+++ b/board/casta/board.c
@@ -0,0 +1,90 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Casta board-specific configuration */
+
+#include "adc.h"
+#include "adc_chip.h"
+#include "battery.h"
+#include "charge_manager.h"
+#include "charge_state.h"
+#include "common.h"
+#include "cros_board_info.h"
+#include "driver/charger/bd9995x.h"
+#include "driver/ppc/nx20p348x.h"
+#include "driver/tcpm/anx7447.h"
+#include "driver/tcpm/ps8xxx.h"
+#include "driver/tcpm/tcpci.h"
+#include "driver/tcpm/tcpm.h"
+#include "extpower.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "i2c.h"
+#include "keyboard_scan.h"
+#include "lid_switch.h"
+#include "power.h"
+#include "power_button.h"
+#include "switch.h"
+#include "system.h"
+#include "tcpci.h"
+#include "temp_sensor.h"
+#include "thermistor.h"
+#include "usb_mux.h"
+#include "usbc_ppc.h"
+#include "util.h"
+
+#define CPRINTSUSB(format, args...) cprints(CC_USBCHARGE, format, ## args)
+#define CPRINTFUSB(format, args...) cprintf(CC_USBCHARGE, format, ## args)
+
+#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args)
+
+static void ppc_interrupt(enum gpio_signal signal)
+{
+	switch (signal) {
+	case GPIO_USB_PD_C0_INT_ODL:
+		nx20p348x_interrupt(0);
+		break;
+
+	case GPIO_USB_PD_C1_INT_ODL:
+		nx20p348x_interrupt(1);
+		break;
+
+	default:
+		break;
+	}
+}
+
+/* Must come after other header files and GPIO interrupts*/
+#include "gpio_list.h"
+
+/* ADC channels */
+const struct adc_t adc_channels[] = {
+	[ADC_TEMP_SENSOR_AMB] = {
+		"TEMP_AMB", NPCX_ADC_CH0, ADC_MAX_VOLT, ADC_READ_MAX+1, 0},
+	[ADC_TEMP_SENSOR_CHARGER] = {
+		"TEMP_CHARGER", NPCX_ADC_CH1, ADC_MAX_VOLT, ADC_READ_MAX+1, 0},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/* TODO(b/119872005): Casta: confirm thermistor parts */
+const struct temp_sensor_t temp_sensors[] = {
+	[TEMP_SENSOR_BATTERY] = {.name = "Battery",
+				 .type = TEMP_SENSOR_TYPE_BATTERY,
+				 .read = charge_get_battery_temp,
+				 .idx = 0,
+				 .action_delay_sec = 1},
+	[TEMP_SENSOR_AMBIENT] = {.name = "Ambient",
+				 .type = TEMP_SENSOR_TYPE_BOARD,
+				 .read = get_temp_3v3_51k1_47k_4050b,
+				 .idx = ADC_TEMP_SENSOR_AMB,
+				 .action_delay_sec = 5},
+	[TEMP_SENSOR_CHARGER] = {.name = "Charger",
+				 .type = TEMP_SENSOR_TYPE_BOARD,
+				 .read = get_temp_3v3_13k7_47k_4050b,
+				 .idx = ADC_TEMP_SENSOR_CHARGER,
+				 .action_delay_sec = 1},
+};
+BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
+
diff --git a/board/casta/board.h b/board/casta/board.h
new file mode 100644
index 0000000000..8d83af75af
--- /dev/null
+++ b/board/casta/board.h
@@ -0,0 +1,65 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Casta board configuration */
+
+#ifndef __CROS_EC_BOARD_H
+#define __CROS_EC_BOARD_H
+
+/* Select Baseboard features */
+#define VARIANT_OCTOPUS_EC_NPCX796FB
+#define VARIANT_OCTOPUS_CHARGER_ISL9238
+#define VARIANT_OCTOPUS_TCPC_0_PS8751
+#define VARIANT_OCTOPUS_NO_SENSORS
+#include "baseboard.h"
+
+/* USB PD */
+#undef CONFIG_USB_PD_VBUS_MEASURE_ADC_EACH_PORT
+#define CONFIG_USB_PD_VBUS_MEASURE_NOT_PRESENT
+
+#define CONFIG_TEMP_SENSOR
+#define CONFIG_THERMISTOR
+
+/* Keyboard Backlight is unconnected in casta proto */
+#undef CONFIG_PWM
+#undef CONFIG_PWM_KBLIGHT
+
+/* All casta systems are clamshells */
+#undef CONFIG_TABLET_MODE
+#undef CONFIG_TABLET_SWITCH
+
+/* TODO(b/119872005): Casta: confirm thermistor parts */
+#define CONFIG_STEINHART_HART_3V3_13K7_47K_4050B
+#define CONFIG_STEINHART_HART_3V3_51K1_47K_4050B
+#define CONFIG_MKBP_EVENT
+#define CONFIG_MKBP_USE_HOST_EVENT
+
+#ifndef __ASSEMBLER__
+
+#include "gpio_signal.h"
+#include "registers.h"
+
+enum adc_channel {
+	ADC_TEMP_SENSOR_AMB,		/* ADC0 */
+	ADC_TEMP_SENSOR_CHARGER,	/* ADC1 */
+	ADC_CH_COUNT
+};
+
+enum temp_sensor_id {
+	TEMP_SENSOR_BATTERY,
+	TEMP_SENSOR_AMBIENT,
+	TEMP_SENSOR_CHARGER,
+	TEMP_SENSOR_COUNT
+};
+
+/* List of possible batteries */
+/* TODO(b/119871861): Casta: battery datasheets and specs */
+enum battery_type {
+	BATTERY_TYPE_COUNT,
+};
+
+#endif /* !__ASSEMBLER__ */
+
+#endif /* __CROS_EC_BOARD_H */
diff --git a/board/casta/build.mk b/board/casta/build.mk
new file mode 100644
index 0000000000..94c194fa01
--- /dev/null
+++ b/board/casta/build.mk
@@ -0,0 +1,15 @@
+# -*- makefile -*-
+# Copyright 2018 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Board specific files build
+#
+
+CHIP:=npcx
+CHIP_FAMILY:=npcx7
+CHIP_VARIANT:=npcx7m6fb
+BASEBOARD:=octopus
+
+board-y=board.o
+board-$(CONFIG_BATTERY_SMART)+=battery.o
diff --git a/board/casta/ec.tasklist b/board/casta/ec.tasklist
new file mode 100644
index 0000000000..addd7efed2
--- /dev/null
+++ b/board/casta/ec.tasklist
@@ -0,0 +1,38 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/*
+ * List of enabled tasks in the priority order
+ *
+ * The first one has the lowest priority.
+ *
+ * For each task, use the macro TASK_ALWAYS(n, r, d, s) for base tasks and
+ * TASK_NOTEST(n, r, d, s) for tasks that can be excluded in test binaries,
+ * where :
+ * 'n' in the name of the task
+ * 'r' in the main routine of the task
+ * 'd' in an opaque parameter passed to the routine at startup
+ * 's' is the stack size in bytes; must be a multiple of 8
+ *
+ * For USB PD tasks, IDs must be in consecutive order and correspond to
+ * the port which they are for. See TASK_ID_TO_PD_PORT() macro.
+ */
+
+#define CONFIG_TASK_LIST \
+	TASK_ALWAYS(HOOKS, hook_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(USB_CHG_P0, usb_charger_task, 0, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(USB_CHG_P1, usb_charger_task, 1, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(CHARGER, charger_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_NOTEST(CHIPSET, chipset_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_NOTEST(KEYPROTO, keyboard_protocol_task, NULL, TASK_STACK_SIZE) \
+	TASK_NOTEST(PDCMD, pd_command_task, NULL, TASK_STACK_SIZE) \
+	TASK_ALWAYS(HOSTCMD, host_command_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(CONSOLE, console_task, NULL, VENTI_TASK_STACK_SIZE) \
+	TASK_ALWAYS(POWERBTN, power_button_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_NOTEST(KEYSCAN, keyboard_scan_task, NULL, TASK_STACK_SIZE) \
+	TASK_ALWAYS(PD_C0, pd_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(PD_C1, pd_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(PD_INT_C0, pd_interrupt_handler_task, 0, TASK_STACK_SIZE) \
+	TASK_ALWAYS(PD_INT_C1, pd_interrupt_handler_task, 1, TASK_STACK_SIZE)
diff --git a/board/casta/gpio.inc b/board/casta/gpio.inc
new file mode 100644
index 0000000000..00597e5270
--- /dev/null
+++ b/board/casta/gpio.inc
@@ -0,0 +1,166 @@
+/* -*- mode:c -*-
+ *
+ * Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Declare symbolic names for all the GPIOs that we care about.
+ * Note: Those with interrupt handlers must be declared first. */
+
+/* Wake Source interrupts */
+GPIO_INT(LID_OPEN,	 PIN(D, 2), GPIO_INT_BOTH |
+				    GPIO_HIB_WAKE_HIGH, lid_interrupt)
+/*
+ * High-to-low transition on POWER_BUTTON_L is treated as a wake event from
+ * hibernate. Absence of GPIO_HIB_WAKE_HIGH flag is treated as wake on
+ * high-to-low edge.
+ */
+GPIO_INT(POWER_BUTTON_L, PIN(0, 1), GPIO_INT_BOTH, power_button_interrupt)	/* MECH_PWR_BTN_ODL */
+GPIO_INT(AC_PRESENT,	 PIN(0, 0), GPIO_INT_BOTH |
+				    GPIO_HIB_WAKE_HIGH, extpower_interrupt)	/* ACOK_OD */
+
+/* USB-C interrupts */
+GPIO_INT(USB_C0_MUX_INT_ODL, PIN(6, 1), GPIO_INT_FALLING, tcpc_alert_event)
+GPIO_INT(USB_C1_MUX_INT_ODL, PIN(F, 5), GPIO_INT_FALLING, tcpc_alert_event)
+GPIO_INT(USB_PD_C0_INT_ODL,  PIN(E, 0), GPIO_INT_FALLING, ppc_interrupt)
+GPIO_INT(USB_PD_C1_INT_ODL,  PIN(F, 1), GPIO_INT_FALLING, ppc_interrupt)
+
+/* Power State interrupts */
+#ifdef CONFIG_POWER_S0IX
+GPIO_INT(PCH_SLP_S0_L,	 PIN(A, 4), GPIO_INT_BOTH, power_signal_interrupt)	/* SLP_S0_L */
+#endif
+GPIO_INT(PCH_SLP_S4_L,	 PIN(A, 3), GPIO_INT_BOTH, power_signal_interrupt)	/* SLP_S4_L */
+GPIO_INT(PCH_SLP_S3_L,	 PIN(A, 6), GPIO_INT_BOTH, power_signal_interrupt)	/* SLP_S3_L */
+GPIO_INT(SUSPWRDNACK,	 PIN(D, 5), GPIO_INT_BOTH, power_signal_interrupt)	/* SUSPWRDNACK */
+GPIO_INT(RSMRST_L_PGOOD, PIN(E, 2), GPIO_INT_BOTH, power_signal_interrupt)	/* PMIC_EC_RSMRST_ODL */
+GPIO_INT(ALL_SYS_PGOOD,	 PIN(F, 4), GPIO_INT_BOTH, power_signal_interrupt)	/* PMIC_EC_PWROK_OD */
+
+/* Other interrupts */
+GPIO_INT(WP_L,		 PIN(A, 1), GPIO_INT_BOTH, switch_interrupt)		/* EC_WP_ODL */
+
+/* Define PCH_SLP_S0_L after all interrupts if CONFIG_POWER_S0IX not defined. */
+#ifndef CONFIG_POWER_S0IX
+GPIO(PCH_SLP_S0_L,	 PIN(A, 4), GPIO_INPUT)		/* SLP_S0_L */
+#endif
+
+/*
+ * PLT_RST_L isn't used since there is a Virtual Wire on eSPI for it. It is here
+ * only for debugging purposes.
+ */
+GPIO(PLT_RST_L,		 PIN(C, 7), GPIO_INPUT)		/* Platform Reset from SoC */
+GPIO(SYS_RESET_L,	 PIN(3, 4), GPIO_ODR_HIGH)	/* SYS_RST_ODL */
+
+GPIO(ENTERING_RW,	 PIN(E, 1), GPIO_OUT_LOW)	/* EC_ENTERING_RW */
+GPIO(PCH_WAKE_L,	 PIN(7, 4), GPIO_ODR_HIGH)	/* EC_PCH_WAKE_ODL */
+GPIO(PCH_PWRBTN_L,	 PIN(C, 1), GPIO_ODR_HIGH)	/* EC_PCH_PWR_BTN_ODL */
+
+GPIO(EN_PP5000,		 PIN(7, 3), GPIO_OUT_LOW)	/* EN_PP5000_A */
+GPIO(PP5000_PG,		 PIN(C, 0), GPIO_INPUT)		/* PP5000_PG_OD */
+GPIO(EN_PP3300,		 PIN(D, 4), GPIO_OUT_LOW)	/* EN_PP3300_A */
+GPIO(PP3300_PG,		 PIN(6, 0), GPIO_INPUT)		/* PP3300_PG_OD */
+GPIO(PMIC_EN,		 PIN(7, 2), GPIO_OUT_LOW)	/* Enable A Rails via PMIC */
+GPIO(PCH_RSMRST_L,	 PIN(C, 2), GPIO_OUT_LOW)	/* RSMRST# to SOC. All _A rails now up. */
+GPIO(PCH_SYS_PWROK,	 PIN(B, 7), GPIO_OUT_LOW)	/* EC_PCH_PWROK. All S0 rails now up. */
+
+/* Peripheral rails */
+GPIO(ENABLE_BACKLIGHT,		PIN(D, 3), GPIO_ODR_HIGH |
+					   GPIO_SEL_1P8V)	/* EC_BL_EN_OD */
+GPIO(EN_P3300_TRACKPAD_ODL,	PIN(3, 3), GPIO_ODR_HIGH)
+
+GPIO(EC_BATT_PRES_L,	 PIN(E, 5), GPIO_INPUT)
+
+/*
+ * EC_RST_ODL acts as a wake source from PSL hibernate mode. However, it does
+ * not need to be an interrupt for normal EC operations. Thus, configure it as
+ * GPIO_INPUT with wake on low-to-high edge using GPIO_HIB_WAKE_HIGH so that PSL
+ * common code can configure PSL_IN correctly.
+ *
+ * Reason for choosing low-to-high edge for waking from hibernate is to avoid
+ * the double reset - one because of PSL_IN wake and other because of VCC1_RST
+ * being asserted. Also, it should be fine to have the EC in hibernate when H1
+ * or servo wants to hold the EC in reset since VCC1 will be down and so entire
+ * EC logic (except PSL) as well as AP will be in reset.
+ */
+GPIO(EC_RST_ODL,	PIN(0, 2), GPIO_INT_BOTH | GPIO_HIB_WAKE_HIGH)
+
+/*
+ * PCH_PROCHOT_ODL is primarily for monitoring the PROCHOT# signal which is
+ * normally driven by the PMIC. The EC can also drive this signal in the event
+ * that the ambient or charger temperature sensors exceeds their thresholds.
+ */
+GPIO(CPU_PROCHOT,	 PIN(3, 7), GPIO_INPUT | GPIO_SEL_1P8V)	/* PCH_PROCHOT_ODL */
+
+GPIO(PCH_RTCRST,	 PIN(7, 6), GPIO_OUT_LOW)		/* EC_PCH_RTCRST */
+
+/* I2C pins - Alternate function below configures I2C module on these pins */
+GPIO(I2C0_SCL,		 PIN(B, 5), GPIO_INPUT)		/* EC_I2C_BATTERY_3V3_SCL */
+GPIO(I2C0_SDA,		 PIN(B, 4), GPIO_INPUT)		/* EC_I2C_BATTERY_3V3_SDA */
+GPIO(I2C1_SCL,		 PIN(9, 0), GPIO_INPUT)		/* EC_I2C_USB_C0_MUX_SCL */
+GPIO(I2C1_SDA,		 PIN(8, 7), GPIO_INPUT)		/* EC_I2C_USB_C0_MUX_SDA */
+GPIO(I2C2_SCL,		 PIN(9, 2), GPIO_INPUT)		/* EC_I2C_USB_C1_MUX_SCL */
+GPIO(I2C2_SDA,		 PIN(9, 1), GPIO_INPUT)		/* EC_I2C_USB_C1_MUX_SDA */
+GPIO(I2C3_SCL,		 PIN(D, 1), GPIO_INPUT)		/* EC_I2C_EEPROM_SCL */
+GPIO(I2C3_SDA,		 PIN(D, 0), GPIO_INPUT)		/* EC_I2C_EEPROM_SDA */
+GPIO(I2C4_SCL,		 PIN(F, 3), GPIO_INPUT)		/* EC_I2C_CHARGER_3V3_SCL */
+GPIO(I2C4_SDA,		 PIN(F, 2), GPIO_INPUT)		/* EC_I2C_CHARGER_3V3_SDA */
+
+/* USB pins */
+GPIO(EN_USB_A0_5V,	 PIN(6, 7), GPIO_OUT_LOW)			/* Enable A0 5V Charging */
+GPIO(EN_USB_A1_5V,	 PIN(9, 6), GPIO_INPUT | GPIO_PULL_DOWN)	/* NC */
+GPIO(USB_A0_CHARGE_EN_L, PIN(A, 2), GPIO_OUT_HIGH)			/* Enable A0 1.5A Charging */
+GPIO(USB_A1_CHARGE_EN_L, PIN(A, 0), GPIO_INPUT | GPIO_PULL_DOWN)	/* NC */
+
+GPIO(USB_C0_PD_RST_ODL,	    PIN(8, 3), GPIO_ODR_HIGH)	/* C0 PD Reset */
+GPIO(USB_C0_BC12_VBUS_ON,   PIN(6, 3), GPIO_OUT_LOW)	/* C0 BC1.2 Power */
+GPIO(USB_C0_BC12_CHG_DET_L, PIN(9, 5), GPIO_INPUT)	/* C0 BC1.2 Detect */
+GPIO(USB_C0_HPD_1V8_ODL,    PIN(C, 5), GPIO_INPUT |	/* C0 DP Hotplug Detect */
+				       GPIO_SEL_1P8V)
+GPIO(USB_C1_PD_RST_ODL,     PIN(7, 0), GPIO_ODR_HIGH)	/* C1 PD Reset */
+GPIO(USB_C1_BC12_VBUS_ON,   PIN(B, 1), GPIO_OUT_LOW)	/* C1 BC1.2 Power */
+GPIO(USB_C1_BC12_CHG_DET_L, PIN(E, 4), GPIO_INPUT)	/* C1 BC1.2 Detect */
+GPIO(USB_C1_HPD_1V8_ODL,    PIN(C, 6), GPIO_INPUT |	/* C1 DP Hotplug Detect */
+				       GPIO_SEL_1P8V)
+
+/* LED */
+GPIO(LED_1_L,		PIN(C, 3), GPIO_OUT_HIGH)
+GPIO(LED_2_L,		PIN(C, 4), GPIO_OUT_HIGH)
+GPIO(LED_3_L,		PIN(D, 7), GPIO_OUT_HIGH)
+
+/* Not implemented in hardware */
+UNIMPLEMENTED(KB_BL_PWR_EN)
+
+/* Overcurrent event to host */
+GPIO(USB_C_OC,      PIN(3, 6), GPIO_ODR_HIGH | GPIO_SEL_1P8V)
+
+/* Strap pins */
+GPIO(GPO66_NC,       PIN(6, 6), GPIO_INPUT | GPIO_PULL_UP)
+GPIO(GPOB6_NC,       PIN(B, 6), GPIO_INPUT | GPIO_PULL_UP)
+
+/* Misc. */
+GPIO(CCD_MODE_ODL,   PIN(E, 3), GPIO_INPUT)
+
+/* Keyboard pins */
+ALTERNATE(PIN_MASK(3, 0x03), 0, MODULE_KEYBOARD_SCAN, GPIO_INPUT)	/* KSI_00-01 */
+ALTERNATE(PIN_MASK(2, 0xFC), 0, MODULE_KEYBOARD_SCAN, GPIO_INPUT)	/* KSI_02-07 */
+ALTERNATE(PIN_MASK(2, 0x03), 0, MODULE_KEYBOARD_SCAN, GPIO_ODR_HIGH)	/* KSO_00-01 */
+ALTERNATE(PIN_MASK(1, 0x7F), 0, MODULE_KEYBOARD_SCAN, GPIO_ODR_HIGH)	/* KSO_03-09 */
+ALTERNATE(PIN_MASK(0, 0xF0), 0, MODULE_KEYBOARD_SCAN, GPIO_ODR_HIGH)	/* KSO_10-13 */
+ALTERNATE(PIN_MASK(8, 0x04), 0, MODULE_KEYBOARD_SCAN, GPIO_ODR_HIGH)	/* KSO_14 */
+GPIO(KBD_KSO2, PIN(1, 7), GPIO_OUT_LOW)	/* KSO_02 inverted */
+
+/* Alternate functions GPIO definitions */
+/* Cr50 requires no pull-ups on UART pins. */
+ALTERNATE(PIN_MASK(6, 0x30), 0, MODULE_UART, 0)		/* UART from EC to Servo */
+ALTERNATE(PIN_MASK(B, 0x30), 0, MODULE_I2C, 0)		/* I2C0 */
+ALTERNATE(PIN_MASK(9, 0x07), 0, MODULE_I2C, 0)		/* I2C1 SCL / I2C2 */
+ALTERNATE(PIN_MASK(8, 0x80), 0, MODULE_I2C, 0)		/* I2C1 SDA */
+ALTERNATE(PIN_MASK(D, 0x03), 0, MODULE_I2C, 0)		/* I2C3 */
+ALTERNATE(PIN_MASK(F, 0x0C), 0, MODULE_I2C, 0)		/* I2C4 */
+ALTERNATE(PIN_MASK(4, 0x30), 0, MODULE_ADC, 0)		/* ADC0-1 */
+
+/* Power Switch Logic (PSL) inputs */
+ALTERNATE(PIN_MASK(D, 0x04), 0, MODULE_PMU, 0)		/* GPIOD2 = LID_OPEN */
+ALTERNATE(PIN_MASK(0, 0x07), 0, MODULE_PMU, 0)		/* GPIO00 = ACOK_OD,
+							   GPIO01 = MECH_PWR_BTN_ODL
+							   GPIO02 = EC_RST_ODL */