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Kconfig: i2c: fix help message related to dm i2c

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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" bool "Enable Driver Model for I2C drivers"
depends on DM depends on DM
help help
Enable driver model for I2C. This SPI flash interface Enable driver model for I2C. The I2C uclass interface: probe, read,
(spi_flash_probe(), spi_flash_write(), etc.) is then write and speed, is implemented with the bus drivers operations,
implemented by the SPI flash uclass. There is one standard which provide methods for bus setting and data transfer. Each chip
SPI flash driver which knows how to probe most chips device (bus child) info is kept as parent platdata. The interface
supported by U-Boot. The uclass interface is defined in is defined in include/i2c.h. When i2c bus driver supports the i2c
include/spi_flash.h, but is currently fully compatible uclass, but the device drivers not, then DM_I2C_COMPAT config can
with the old interface to avoid confusion and duplication be used as compatibility layer.
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).
config DM_I2C_COMPAT config DM_I2C_COMPAT
bool "Enable I2C compatibility layer" bool "Enable I2C compatibility layer"