On Wed, Jun 29, 2016 at 10:17:52AM +0100, Jon Hunter wrote: > The I2C driver core for boards using device-tree assumes any subnode of > an I2C adapter in the device-tree blob is an I2C slave device. Although > this makes complete sense, some I2C adapters may have subnodes which > are not I2C slaves but subnodes presenting other features. For example > some Tegra devices have an I2C interface which may share its pins with > other devices. In order to share these pins using the pinctrl framework, > it is necessary to add subnodes to the I2C device node that represent > these pins. > > To allow I2C adapters to have non-I2C specific subnodes in device-tree > that are not parsed by the I2C driver core, add support for an optional > 'i2c-bus' subnode where I2C slaves can be placed. If the 'i2c-bus' > subnode is present then all I2C slaves must be placed under this > subnode. > > Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx> > Acked-by: Thierry Reding <treding@xxxxxxxxxx> > Acked-by: Rob Herring <robh@xxxxxxxxxx> Acked-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
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