Hi Roland, On Mon, Apr 16, 2018 at 01:19:39PM +0300, Baruch Siach wrote: > Hi Roland, > > On Mon, Apr 16, 2018 at 09:52:14AM +0000, Mainz, Roland wrote: > > Two small questions about drivers/mfd/mc34704.c in the barebox codebase: > > 1. mc34704 has an ACCURATE bit (I2CSET1, see > > https://www.nxp.com/docs/en/data-sheet/MC34704.pdf) which requires that all > > read/write commands are send twice - does the barebox code have any support > > for that in the current versions ? > > 2. Is this "accurate I²C communication mode" enabled by that bit a > > vendor-specific protocol extension or is it part of the I²C standard ?
I never heard of "accurate I²C", it must be something the chip designers have invented. Also there is no support for it neither in the mc34704 driver nor in the generic I²C support. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list email@example.com http://lists.infradead.org/mailman/listinfo/barebox