drivers: i2c: Add SAM0 I2C driver

This adds a SERCOM I2C driver for SAM0 series chips.

Tested with a SAM D21 chip against a SSD1306 display and a MLX90393
sensor.  Only compile tested for SAM D20.

Signed-off-by: Derek Hageman <[email protected]>

Author: Sizurka

drivers/i2c/CMakeLists.txt

@@ -18,6 +18,7 @@ zephyr_library_sources_ifdef(CONFIG_I2C_SBCON		i2c_sbcon.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_SIFIVE		i2c_sifive.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_NIOS2		i2c_nios2.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_GECKO		i2c_gecko.c)
+zephyr_library_sources_ifdef(CONFIG_I2C_SAM0		i2c_sam0.c)
 
 zephyr_library_sources_ifdef(CONFIG_I2C_STM32_V1
 	i2c_ll_stm32_v1.c

drivers/i2c/Kconfig

@@ -300,4 +300,12 @@ config I2C_NIOS2
 	help
 	  Enable the Nios-II I2C driver.
 
+config I2C_SAM0
+	bool "SAM0 series I2C SERCOM driver"
+	default y
+	depends on SOC_FAMILY_SAM0
+	select HAS_DTS_I2C
+	help
+	  Enable the SAM0 series SERCOM I2C driver.
+
 endif # I2C