spi: davinci: Remove duplicate code to set bus and cs for slave

[oweals/u-boot.git] / drivers / i2c / Kconfig

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 202ea5d67940ece1c555568794a7cfd343f0fc30..692810d057e4d3e57d6d570d0fa8271f7f6ca960 100644 (file)
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -2,8 +2,25 @@ config DM_I2C
        bool "Enable Driver Model for I2C drivers"
        depends on DM
        help
-         If you want to use driver model for I2C drivers, say Y.
-         To use legacy I2C drivers, say N.
+         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).
+
+config DM_I2C_COMPAT
+       bool "Enable I2C compatibility layer"
+       depends on DM
+       help
+         Enable old-style I2C functions for compatibility with existing code.
+         This option can be enabled as a temporary measure to avoid needing
+         to convert all code for a board in a single commit. It should not
+         be enabled for any board in an official release.
 
 config SYS_I2C_UNIPHIER
        bool "UniPhier I2C driver"