Signed-off-by: Przemyslaw Marczak <p.marc...@samsung.com>
Cc: Masahiro Yamada <yamada.masah...@socionext.com>
Cc: Mike Frysinger <vap...@gentoo.org>
Cc: Simon Glass <s...@chromium.org>
Cc: Heiko Schocher <h...@denx.de>
Changes V2:
- add i2c uclass description
Changes v3:
- Kconfig: i2c-uclass: fix help message
---
drivers/i2c/Kconfig | 17 +++++++----------
1 file 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"
--
1.9.1
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