Hi Wolfram, Thanks for the feedback. > Subject: Re: [PATCH v5 01/11] i2c: Enhance i2c_new_ancillary_device API > > Hi everyone, > > > Perhaps we should first think through what an ancillary device really > > is. My understanding is that it is used to talk to secondary > > addresses of a multi-address I2C slave device. > > As I mentioned somewhere before, this is not the case. Ancillary devices > are when one *driver* handles more than one address. Everything else has > been handled differently in the past (for all the uses I am aware of). > > Yet, I have another idea which is so simple that I wonder if it maybe has > already been discussed so far? > > * have two regs in the bindings OK, it is inline with DT maintainers expectation as it is matching with real hw as single device node having two regs. > * use the second reg with i2c_new_client_device to instantiate the > RTC sibling. 'struct i2c_board_info', which is one parameter, should > have enough options to pass data, e.g it has a software_node. OK, I can see the below can be passed from PMIC to new client device. client->addr = info->addr; client->init_irq = info->irq; > > Should work or did I miss something here? I guess it will work. We instantiate appropriate device based On PMIC revision and slave address and IRQ resource passed through 'struct i2c_board_info' Will check this and update you. Cheers, Biju
