On Fri, Oct 6, 2017 at 4:50 AM, Rob Herring <robh@xxxxxxxxxx> wrote: > On Thu, Sep 28, 2017 at 02:11:27PM +0100, Sudeep Holla wrote: >> This patch adds ARM MHU specific mailbox client bindings to support >> SCMI. Since SCMI specification just requires doorbell mechanism from >> mailbox controllers, we add mailbox data to specify the doorbell bit(s). >> >> Cc: Rob Herring <robh+dt@xxxxxxxxxx> >> Cc: Mark Rutland <mark.rutland@xxxxxxx> >> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx> >> --- >> .../devicetree/bindings/arm/arm,mhu-scmi.txt | 19 +++++++++++++++++++ >> 1 file changed, 19 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/arm/arm,mhu-scmi.txt >> >> diff --git a/Documentation/devicetree/bindings/arm/arm,mhu-scmi.txt b/Documentation/devicetree/bindings/arm/arm,mhu-scmi.txt >> new file mode 100644 >> index 000000000000..8c106f1cdeb8 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/arm/arm,mhu-scmi.txt >> @@ -0,0 +1,19 @@ >> +ARM MHU mailbox client bindings for SCMI Message Protocol >> +---------------------------------------------------------- >> + >> +This binding is intended to define the ARM MHU specific extensions to >> +the generic SCMI bindings[2]. >> + >> +Required properties: >> + >> +The scmi node with the following properties shall be under the /firmware/ node. >> + >> +- compatible : shall be "arm,scmi" and "arm,mhu-scmi" > > Most specific first. > >> +- mbox-data : For each phandle listed in mboxes property, an unsigned 32-bit >> + data as expected by the mailbox controller > > Shouldn't that be cells as part of mboxes property? > A MHU client can send any number of commands (such u32 values) over a channel. This client (SCMI) sends just one command over a channel, but other clients may/do send two or more. -- 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
