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Kconfig: i2c: fix help message related to dm i2c 

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Przemyslaw Marczak 2015-03-31 18:57:17 +02:00 committed by Simon Glass
parent 2984e7a102
commit 705fcf4de4
1 changed files with 7 additions and 10 deletions
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17
drivers/i2c/Kconfig
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@ -2,16 +2,13 @@ config DM_I2C
bool "Enable Driver Model for I2C drivers"
depends on DM
help
Enable driver model for I2C. This SPI flash interface
(spi_flash_probe(), spi_flash_write(), etc.) is then
implemented by the SPI flash uclass. There is one standard
SPI flash driver which knows how to probe most chips
supported by U-Boot. The uclass interface is defined in
include/spi_flash.h, but is currently fully compatible
with the old interface to avoid confusion and duplication
during the transition parent. SPI and SPI flash must be
enabled together (it is not possible to use driver model
for one and not the other).
Enable driver model for I2C. The I2C uclass interface: probe, read,
write and speed, is implemented with the bus drivers operations,
which provide methods for bus setting and data transfer. Each chip
device (bus child) info is kept as parent platdata. The interface
is defined in include/i2c.h. When i2c bus driver supports the i2c
uclass, but the device drivers not, then DM_I2C_COMPAT config can
be used as compatibility layer.
config DM_I2C_COMPAT
bool "Enable I2C compatibility layer"