Commit 4d7ec579 authored by Simon Glass's avatar Simon Glass Committed by Anas Nashif
Browse files

board: arm: google_kukui: Enable I2C 



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: default avatarSimon Glass <sjg@chromium.org>
parent 9484b9be

boards/arm/google_kukui/Kconfig.board

+1 −1
Original line number Diff line number Diff line
@@ -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.

boards/arm/google_kukui/doc/index.rst

+5 −0
Original line number Diff line number Diff line
@@ -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

*************************

boards/arm/google_kukui/google_kukui.dts

+10 −0
Original line number Diff line number Diff line
@@ -37,3 +37,13 @@ 
		};

	};

};



&i2c1 {

	status = "okay";

	clock-frequency = <I2C_BITRATE_FAST>;

};



&i2c2 {

	status = "okay";

	clock-frequency = <I2C_BITRATE_FAST>;

};

boards/arm/google_kukui/google_kukui_defconfig

+3 −0
Original line number Diff line number Diff line
@@ -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

boards/arm/google_kukui/pinmux.c

+8 −0
Original line number Diff line number Diff line
@@ -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)

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