Hi Baruch, > Baruch Siach <baruch@xxxxxxxxxx> hat am 2. Januar 2018 um 14:19 geschrieben: > > > The Raspberry Pi 3 has a GPIO expander that controls, among others, the > activity LED, and the camera connector GPIOs. The GPIO expander on an I2C bus > that is not directly controlled from the ARM core. The VC4 firmware controls > the I2C bus, and allows the ARM core to set/get GPIO settings over its mailbox > interface. > > This series adds support for the RPi3 expander. > > The driver is ported from the downstream kernel at > https://github.com/raspberrypi/linux/, branch rpi-4.9.y. > thanks for trying to upstream this. There has been attemps by Eric Anholt (September 2016) and Michael Zoran (March 2017). Some problems like get_direction() has been fixed, but not all of them. So please look at the followings links first: https://patchwork.kernel.org/patch/9339859/ https://patchwork.kernel.org/patch/9339857/ http://lists.infradead.org/pipermail/linux-rpi-kernel/2017-March/005903.html Stefan -- 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
