diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/Kconfig | 28 | ||||
| -rw-r--r-- | drivers/i2c/Makefile | 2 |
2 files changed, 26 insertions, 4 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 35d6e2c8ec5..63d03a3cebf 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -2,7 +2,29 @@ # I2C subsystem configuration # -menu "I2C support" +menuconfig I2C + bool "I2C support" + default y + help + Note: + This is a stand-in for an option to enable I2C support. In fact this + simply enables building of the I2C directory for U-Boot. The actual + I2C feature is enabled by DM_I2C (for driver model) and + the #define CONFIG_SYS_I2C_LEGACY (for the legacy I2C stack). + + So at present there is no need to ever disable this option. + + Eventually it will: + + Enable support for the I2C (Inter-Integrated Circuit) bus in U-Boot. + I2C works with a clock and data line which can be driven by a + one or more masters or slaves. It is a fairly complex bus but is + widely used as it only needs two lines for communication. Speeds of + 400kbps are typical but up to 3.4Mbps is supported by some + hardware. Enable this option to build the drivers in drivers/i2c as + part of a U-Boot build. + +if I2C config DM_I2C bool "Enable Driver Model for I2C drivers" @@ -74,7 +96,7 @@ config DM_I2C_GPIO config SPL_DM_I2C_GPIO bool "Enable Driver Model for software emulated I2C bus driver in SPL" - depends on SPL_DM && DM_I2C_GPIO && SPL_DM_GPIO && SPL_GPIO_SUPPORT + depends on SPL_DM && DM_I2C_GPIO && SPL_DM_GPIO && SPL_GPIO default y help Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO @@ -528,4 +550,4 @@ config SYS_I2C_IHS source "drivers/i2c/muxes/Kconfig" -endmenu +endif diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index 06a1150f03d..c2eb24e0f7b 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -11,7 +11,7 @@ obj-$(CONFIG_$(SPL_)I2C_CROS_EC_TUNNEL) += cros_ec_tunnel.o obj-$(CONFIG_$(SPL_)I2C_CROS_EC_LDO) += cros_ec_ldo.o obj-$(CONFIG_I2C_MV) += mv_i2c.o -obj-$(CONFIG_SYS_I2C) += i2c_core.o +obj-$(CONFIG_SYS_I2C_LEGACY) += i2c_core.o obj-$(CONFIG_SYS_I2C_ASPEED) += ast_i2c.o obj-$(CONFIG_SYS_I2C_AT91) += at91_i2c.o obj-$(CONFIG_SYS_I2C_CADENCE) += i2c-cdns.o |