drivers: i2c: Introduce basic bflb I2C driver

Introduce synchronous i2c driver

Signed-off-by: Camille BAUD <[email protected]>

Author: VynDragon

drivers/i2c/CMakeLists.txt

@@ -25,6 +25,7 @@ add_subdirectory_ifdef(CONFIG_I2C_TARGET target)
 # zephyr-keep-sorted-start
 zephyr_library_sources_ifdef(CONFIG_I2C_AMBIQ		i2c_ambiq.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_ANDES_ATCIIC100	i2c_andes_atciic100.c)
+zephyr_library_sources_ifdef(CONFIG_I2C_BFLB		i2c_bflb.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_CADENCE         i2c_cdns.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_CC13XX_CC26XX	i2c_cc13xx_cc26xx.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_CC23X0		i2c_cc23x0.c)

drivers/i2c/Kconfig

@@ -122,6 +122,7 @@ source "drivers/i2c/Kconfig.ambiq"
 source "drivers/i2c/Kconfig.andes_atciic100"
 source "drivers/i2c/Kconfig.b91"
 source "drivers/i2c/Kconfig.bcm_iproc"
+source "drivers/i2c/Kconfig.bflb"
 source "drivers/i2c/Kconfig.cc13xx_cc26xx"
 source "drivers/i2c/Kconfig.cc23x0"
 source "drivers/i2c/Kconfig.cdns"

drivers/i2c/Kconfig.bflb

@@ -0,0 +1,9 @@
+# Copyright (c) 2024-2025 MASSDRIVER EI (massdriver.space)
+# SPDX-License-Identifier: Apache-2.0
+
+config I2C_BFLB
+	bool "Bouffalolab I2C driver"
+	default y
+	depends on DT_HAS_BFLB_I2C_ENABLED
+	help
+	  I2C driver support for Bouffalolab platforms