On Tuesday 10 June 2014 15:47:16 Boris BREZILLON wrote: > > +config I2C_SUN6I_P2WI > + tristate "Allwinner sun6i internal P2WI controller" > + depends on ARCH_SUNXI > + help > + If you say yes to this option, support will be included for the > + P2WI (Push/Pull 2 Wire Interface) controller embedded in some sunxi > + SOCs. > + The P2WI looks like an SMBus controller (which supports only byte > + accesses), except that it only supports one slave device. > + This interface is used to connect to specific PMIC devices (like the > + AXP221). > + Sorry for the stupid question, but why is this an i2c driver if the hardware protocol is completely different? I understand that a lot of devices can be driven using either spi or i2c, and we have two sets of {directories,maintainers,bus_types,...} for them. Your description sounds like this is a separate option that isn't any closer to i2c than it is to spi. Would it perhaps be better to expose it only as a regmap rather than an i2c host? Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html