On Mon, Dec 07, 2020 at 10:01:52AM -0600, Rob Herring wrote: > On Tue, Dec 01, 2020 at 02:34:51PM -0800, mgross@xxxxxxxxxxxxxxx wrote: > > From: Daniele Alessandrelli <daniele.alessandrelli@xxxxxxxxx> > > > > Add DT binding documentation for the Intel Keem Bay IPC driver, which > > enables communication between the Computing Sub-System (CSS) and the > > Multimedia Sub-System (MSS) of the Intel Movidius SoC code named Keem > > Bay. > > > > Cc: devicetree@xxxxxxxxxxxxxxx > > Reviewed-by: Mark Gross <mgross@xxxxxxxxxxxxxxx> > > Signed-off-by: Daniele Alessandrelli <daniele.alessandrelli@xxxxxxxxx> > > --- > > .../bindings/soc/intel/intel,keembay-ipc.yaml | 63 +++++++++++++++++++ > > 1 file changed, 63 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml > > > > diff --git a/Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml b/Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml > > new file mode 100644 > > index 000000000000..6e21c54d8f34 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml > > @@ -0,0 +1,63 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +# Copyright (C) 2020 Intel Corporation > > +%YAML 1.2 > > +--- > > +$id: "http://devicetree.org/schemas/soc/intel/intel,keembay-ipc.yaml#"; > > +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; > > + > > +title: Keem Bay IPC > > + > > +maintainers: > > + - Daniele Alessandrelli <daniele.alessandrelli@xxxxxxxxx> > > + > > +description: > > + The Keem Bay IPC driver enables Inter-Processor Communication (IPC) with the > > + Visual Processor Unit (VPU) embedded in the Intel Movidius SoC code named > > + Keem Bay. > > Sounds like a mailbox. Its a multi-channel mailbox like thing with priority channel support. > > What's the relationship between this and the xlink thing? Xlink is a SW abstraction to allow multiple user access to the VPU as well as enabling use cases where a Keem Bay is used as an accelerator add in card as well as a simple SBC type of design. The xlink stuff sits on top of the IPC stuff. --mark
