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board: arm: google_kukui: Enable I2C

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Kukui has two I2C ports with various peripherals including a battery
charger and a TCPCi-compatible port controller

Enable I2C so that these can be used. No drivers are provided so far.

Also update the GPIO documentation while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-04-30 12:18:34 -06:00 committed by Anas Nashif
parent 9484b9be95
commit 4d7ec57915
5 changed files with 27 additions and 1 deletions
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2
boards/arm/google_kukui/Kconfig.board
View file

@ -11,4 +11,4 @@ config BOARD_GOOGLE_KUKUI
Duet and 10e Chromebook Tablet. The EC handles battery charging, Duet and 10e Chromebook Tablet. The EC handles battery charging,
keyboard scanning, USB Power Delivery and sensors. keyboard scanning, USB Power Delivery and sensors.
So far for Zephyr only a simple serial console is supported. So far for Zephyr only a simple serial console and I2C are supported.

5
boards/arm/google_kukui/doc/index.rst
View file

@ -61,6 +61,11 @@ Default Zephyr Peripheral Mapping:
---------------------------------- ----------------------------------
- UART_1 TX/RX : PA10/PA9 - UART_1 TX/RX : PA10/PA9
- I2C_1 SCL/SDA : PB8/PB9
- I2C_2 SCL/SDA : PA11/PA12
- Volume down : GPIOB pin 11
- Volume up : GPIOB pin 10
- Power : GPIOA pin 0
Programming and Debugging Programming and Debugging
************************* *************************

10
boards/arm/google_kukui/google_kukui.dts
View file

@ -37,3 +37,13 @@
}; };
}; };
}; };
&i2c1 {
status = "okay";
clock-frequency = <I2C_BITRATE_FAST>;
};
&i2c2 {
status = "okay";
clock-frequency = <I2C_BITRATE_FAST>;
};

3
boards/arm/google_kukui/google_kukui_defconfig
View file

@ -11,6 +11,9 @@ CONFIG_BOARD_GOOGLE_KUKUI=y
CONFIG_SERIAL=y CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y CONFIG_UART_INTERRUPT_DRIVEN=y
# I2C support
CONFIG_I2C=y
# Enable console # Enable console
CONFIG_CONSOLE=y CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y CONFIG_UART_CONSOLE=y

8
boards/arm/google_kukui/pinmux.c
View file

@ -17,6 +17,14 @@ static const struct pin_config pinconf[] = {
{STM32_PIN_PA9, STM32F0_PINMUX_FUNC_PA9_USART1_TX}, {STM32_PIN_PA9, STM32F0_PINMUX_FUNC_PA9_USART1_TX},
{STM32_PIN_PA10, STM32F0_PINMUX_FUNC_PA10_USART1_RX}, {STM32_PIN_PA10, STM32F0_PINMUX_FUNC_PA10_USART1_RX},
#endif #endif
#if DT_HAS_NODE(DT_NODELABEL(i2c1))
{STM32_PIN_PB8, STM32F0_PINMUX_FUNC_PB8_I2C1_SCL},
{STM32_PIN_PB9, STM32F0_PINMUX_FUNC_PB9_I2C1_SDA},
#endif
#if DT_HAS_NODE(DT_NODELABEL(i2c2))
{STM32_PIN_PA11, STM32F0_PINMUX_FUNC_PA11_I2C2_SCL},
{STM32_PIN_PA12, STM32F0_PINMUX_FUNC_PA12_I2C2_SDA},
#endif
}; };
static int pinmux_stm32_init(struct device *port) static int pinmux_stm32_init(struct device *port)