Hi Michael, > Documentation/i2c/slave-interface.rst says that I2C_SLAVE_WRITE_REQUESTED, > which is mandatory, should be sent while the data did not arrive yet. It > means in a write-request I2C_SLAVE_WRITE_REQUESTED should be reported > before any I2C_SLAVE_WRITE_RECEIVED.
Correct. > dev->status can be used to record the current state, especially Designware > I2C controller has no interrupts to identify a write-request. This patch Just double-checking: the designware HW does not raise an interrupt when its own address + RW bit has been received? Kind regards, Wolfram
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