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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,
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
- 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
*************************

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_UART_INTERRUPT_DRIVEN=y
# I2C support
CONFIG_I2C=y
# Enable console
CONFIG_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_PA10, STM32F0_PINMUX_FUNC_PA10_USART1_RX},
#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)