Hi, I'm just going to rewrite your rcar driver for the i.mx6 processor. thanks to your comments in the rcar driver, I understand the function of each register. But I'd like a manual of this board. Where is accurately entered into the individual registers. The product spectrum from Renesas is very large and actually very confusing for me. Had someone for me a manual by the individual registers are explained. So that I can understand the rcar driver better. thanks 2015-11-10 9:59 GMT+01:00 Wolfram Sang <wsa@xxxxxxxxxxxxx>: > Hi Michael, > >> Do I understand it right, I can set the Master in slave mode and the >> new slave get his own i2c-adresse? > > Yes, you can have your own address then. Note that I recently gave a > talk about the slave framework. You can find the slides here: > > http://elinux.org/ELCE_2015_Presentations > > Search for my name there. And if you wait some more, the video will be > there, too, which will be much more helpful than the slides only. And > there is the regular documentation: > > Documentation/i2c/slave-interface > >> Say that, I can connect a Master from the outside, without this >> leading to problems? >> If the master switch to slave, then stops SCL? Or how does it work? > > I suggest getting the I2C specifications from the web and read about > "multi master" and "bus arbitration" to understand how it works. Please > note that true multi-master busses can in practice be tricky. Shall your > mx6 also be master, or slave only? > >> Is the EEPROM simulator only available if I rewrote "i2c-IMX" drivers >> to the slave support? > > Yes. > >> Does anyone know if anyone is working on this driver? > > I don't know of; but I put some more people on CC who regularly work on > Freescale SoCs. > >> Would it theoretically be enough to write 0x80 in the "I2Cx_I2CR" >> register to set MSTA Bit to >> slave mode. "Changing MSTA from 1 to 0 generates a Stop and selects Slave mode." >> Or then disturbs the old driver? > > You need more to do this. You need to handle slave interrupts. See the > documentation. > > Good luck, > > Wolfram > -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
