Re: [PATCH 07/12] dt-bindings: i2c: Add support for 'i2c-bus' subnode

Rob Herring
2016-06-24T19:23:43Z

On Thu, Jun 23, 2016 at 04:59:00PM +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 as being a 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 and to share these pins subnodes for
> representing these pins so they have be shared via the pinctrl framework
> are needed.
>
> To allow I2C adapters to have non-I2C specific subnodes in device-tree
> that are not parsed by the I2C driver core by adding support for a
> '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@nvidia.com>
> Acked-by: Thierry Reding <treding@nvidia.com>
> ---
> Documentation/devicetree/bindings/i2c/i2c.txt | 8 ++++++++
> 1 file changed, 8 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>