This option is not used in U-Boot. Drop it.
Signed-off-by: Simon Glass sjg@chromium.org ---
README | 32 +------------------------------- 1 file changed, 1 insertion(+), 31 deletions(-)
diff --git a/README b/README index 9798292f8d..f71374444d 100644 --- a/README +++ b/README @@ -2214,37 +2214,7 @@ The following options need to be configured:
If you do not have i2c muxes on your board, omit this define.
-----under removal: - -- Legacy I2C Support: CONFIG_SOFT_I2C - - NOTE: It is intended to move drivers to CONFIG_SYS_I2C which - provides the following compelling advantages: - - - more than one i2c adapter is usable - - approved multibus support - - better i2c mux support - - ** CONFIG_SOFT_I2C is now being removed ** - - With CONFIG_SOFT_I2C you will need to define - CONFIG_SYS_I2C_SPEED to be the frequency (in Hz) at which you - wish your i2c bus to run and CONFIG_SYS_I2C_SLAVE to be the - address of this node (ie the CPU's i2c node address). - - Now, the u-boot i2c code for the mpc8xx - (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node - and so its address should therefore be cleared to 0 (See, - eg, MPC823e User's Manual p.16-473). So, set - CONFIG_SYS_I2C_SLAVE to 0. - - When a board is reset during an i2c bus transfer - chips might think that the current transfer is still - in progress. Reset the slave devices by sending start - commands until the slave device responds. - - That's all that's required for CONFIG_HARD_I2C. - +- Legacy I2C Support: If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) then the following macros need to be defined (examples are from include/configs/lwmon.h):