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authorPrzemyslaw Marczak <p.marczak@samsung.com>2015-03-31 18:57:17 +0200
committerSimon Glass <sjg@chromium.org>2015-04-18 11:11:17 -0600
commit705fcf4de40383a47dc92c4c9d7dbeb37a9d1104 (patch)
treee9accdc8a949c880e206a6ae6129c6b5f55efa68
parent2984e7a102aec85a39827b314bc898ebb5d2fdb9 (diff)
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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>
-rw-r--r--drivers/i2c/Kconfig17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 692810d..c83a984 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -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"