Hello Chuanhua Han,
Am 16.05.2019 um 13:44 schrieb Chuanhua Han:
hi, Heiko Schocher
Some soc related files use i2c_read, i2c_write similar function interface,
if you do not use the CONFIG_DM_I2C_COMPAT option to compile,
there will be a function undefined compilation error,
For which board, which driver?
but if you do CONFIG_DM_I2C_COMPAT=y When compiling,
there will be the following warnings:
===================== WARNING ======================
This board uses CONFIG_DM_I2C_COMPAT. Please remove
(possibly in a subsequent patch in your series)
before sending patches to the mailing list.
====================================================
If I do ONFIG_DM_I2C_COMPAT=y, do I need to implement i2c_read, i2c_write such as the function
interface definition in the i2c controller driver?
No.
But these function declarations are all from include/i2c.h, if CONFIG_DM_I2C=y, these functions are
not declared.
Intentionally.
How should I be compatible with these old-style interfaces?
You should port the parts which break to DM model.
bye,
Heiko
look forward to your reply!
Thanks,
Chuanhua
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