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authorStefano Babic <sbabic@denx.de>2015-03-02 09:42:53 +0100
committerStefano Babic <sbabic@denx.de>2015-03-02 09:42:53 +0100
commitb9cb64825b5e6efeb715abd8b48d9b12f98973e9 (patch)
treed70d73a986308dee88474572006f5c60b10749be /drivers/i2c/Kconfig
parent4579dc37c3cce36d9521c26c6e82881393ec769e (diff)
parent1606b34aa50804227806971dbb6b82ea0bf81f55 (diff)
Merge branch 'master' of git://git.denx.de/u-boot
Diffstat (limited to 'drivers/i2c/Kconfig')
-rw-r--r--drivers/i2c/Kconfig21
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 202ea5d679..692810d057 100644
--- 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"