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-# Configure EC Chipset
-
-## Config options
-
-The EC chipset is selected using board specific make file [build.mk]. The
-following configuration options specify the type and size of flash memory used
-by the EC.
-
--   `CONFIG_SPI_FLASH_REGS` - Should always be defined when using internal or
-    external SPI flash.
--   `CONFIG_SPI_FLASH` - Define only if your board uses an external flash.
--   `CONFIG_SPI_FLASH_<device_type>` - Select exactly one the supported flash
-    devices to compile in the required driver. This is needed even when using
-    the internal SPI flash of the EC chipset.
--   Additional EC Chipset options are prefixed with `CONFIG_HIBERNATE*` and
-    should be evaluated for relevance on your board.
-
-## Feature Parameters
-
--   `CONFIG_FLASH_SIZE_BYTES <bytes>` - Set to the size of the internal flash of
-    the EC. Must be defined to link the final image.
--   `CONFIG_SPI_FLASH_PORT <port>` - Only used if your board as an external
-    flash.
-
-## GPIOs and Alternate Pins
-
-Configure the signals which will wakeup the EC from hibernate or deep sleep.
-Typical wakeup sources include:
-
--   `GPIO_LID_OPEN` - An active high signal that indicates the lid has been
-    opened. The source of the signal is typically from a
-    [GMR](../ec_terms.md#gmr) or Hall-Effect sensor. The `GPIO_INT()` entry for
-    this signal should be connected to the `lid_interrupt()` routine.
--   `GPIO_AC_PRESENT` - A signal from the battery charger that indicates the
-    device is connected to AC power. This signal is connected to the
-    `power_interrupt()` routine.
--   `GPIO_POWER_BUTTON_L` - An active low signal from the power switch. This
-    signal is connected to the `power_button_interrupt()` routine.
--   `GPIO_EC_RST_ODL` - On some Nuvoton EC chipsets, the reset signal is
-    dual-routed to both a dedicated reset pin and a GPIO. In this case, no
-    interrupt handler needs to be registered to the GPIO signal, but the GPIO
-    pin must still be configured to wake on both edge types. The GPIO pin should
-    also be locked prevent the pin configuration from changing after the EC
-    read-only code runs.
-
-See the [GPIO](./gpio.md) documentation for additional details on the GPIO
-macros.
-
-## Data structures
-
--   `const enum gpio_signal hibernate_wake_pins[]` - add all GPIO signals that
-    should trigger a wakeup of the EC.
--   `const int hibernate_wake_pins_used = ARRAY_SIZE(hibernate_wake_pins);` -
-    configures the number of wake signals used on the board.
-
-All ChromeOS wake sources are documented on the ChromeOS partner site in the
-[Wake Sources and Battery Life] section. The EC specific wake sources are found
-under the Deep Sleep and Shipping states and include:
-
--   Power button
--   AC insert
--   Lid open
-
-## Tasks
-
-None required by this feature.
-
-## Testing and Debugging
-
-## Example
-
-For the Volteer reference board, the following wake sources are defined in
-[gpio.inc]. Note that configuration of `GPIO(EC_RST_ODL)` is located after all
-`GPIO_INT()` entries required by the board.
-
-```c
-/* Wake Source interrupts */
-GPIO_INT(EC_LID_OPEN,          PIN(D, 2), GPIO_INT_BOTH | GPIO_HIB_WAKE_HIGH, lid_interrupt)
-GPIO_INT(EC_WP_L,              PIN(A, 1), GPIO_INT_BOTH, switch_interrupt)
-GPIO_INT(H1_EC_PWR_BTN_ODL,    PIN(0, 1), GPIO_INT_BOTH, power_button_interrupt)
-GPIO_INT(ACOK_OD,              PIN(0, 0), GPIO_INT_BOTH | GPIO_HIB_WAKE_HIGH, extpower_interrupt)
-
-/* EC_RST_ODL - PSL input but must be locked */
-GPIO(EC_RST_ODL, PIN(0, 2), GPIO_INT_BOTH | GPIO_HIB_WAKE_HIGH | GPIO_LOCKED)
-```
-
-For the NPCx7 chipset, the alternate function must also be configured to connect
-the wakeup pins to the PSL (power switch logic).
-
-```c
-/* GPIOD2 = EC_LID_OPEN */
-ALTERNATE(PIN_MASK(D, BIT(2)), 0, MODULE_PMU, 0)
-/* GPIO00 = ACOK_OD,
-   GPIO01 = H1_EC_PWR_BTN_ODL
-   GPIO02 = EC_RST_ODL */
-ALTERNATE(PIN_MASK(0, BIT(0) | BIT(1) | BIT(2)), 0, MODULE_PMU, 0)
-```
-
-The final step is to add the hibernate signals array to Volteer [baseboard.c]
-file:
-
-```c
-/* Wake up pins */
-const enum gpio_signal hibernate_wake_pins[] = {
-    GPIO_LID_OPEN,
-    GPIO_ACOK_OD,
-    GPIO_POWER_BUTTON_L,
-    GPIO_EC_RST_ODL,
-};
-const int hibernate_wake_pins_used = ARRAY_SIZE(hibernate_wake_pins);
-```
-
-[gpio.inc]: ../../board/volteer/gpio.inc
-[baseboard.c]: ../../baseboard/volteer/baseboard.c
-[build.mk]: ../new_board_checklist.md#board_build_mk
-[Wake Sources and Battery Life]: https://chromeos.google.com/partner/dlm/docs/latest-requirements/chromebook.html#wake-sources-and-battery-life