Messages in this thread | | | Subject | Re: [PATCH 1/3] dt: xilinx: zynqmp: Add bindings for PM firmware | From | Michal Simek <> | Date | Fri, 11 Aug 2017 14:58:03 +0200 |
| |
Hi Rob, +Edgar,
On 10.8.2017 21:10, Rob Herring wrote: > On Fri, Aug 04, 2017 at 03:45:30PM +0200, Michal Simek wrote: >> From: Soren Brinkmann <soren.brinkmann@xilinx.com> >> >> Document the DT bindings for the Zynq UltraScale+ PM Firmware. >> >> Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> >> Signed-off-by: Michal Simek <michal.simek@xilinx.com> >> --- >> >> .../devicetree/bindings/soc/xilinx/xlnx,zynqmp-pm.txt | 19 +++++++++++++++++++ > > bindings/firmware/
will move.
> >> 1 file changed, 19 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/soc/xilinx/xlnx,zynqmp-pm.txt >> >> diff --git a/Documentation/devicetree/bindings/soc/xilinx/xlnx,zynqmp-pm.txt b/Documentation/devicetree/bindings/soc/xilinx/xlnx,zynqmp-pm.txt >> new file mode 100644 >> index 000000000000..222a18ce07fc >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/soc/xilinx/xlnx,zynqmp-pm.txt >> @@ -0,0 +1,19 @@ >> +Xilinx Zynq MPSoC Firmware Device Tree Bindings >> + >> +The zynqmp-pm node describes the interface to platform firmware. > > Please define this should be under /firmware node. > >> +Required properties: >> + - compatible: Must contain: "xlnx,zynqmp-pm" >> + - method: The method of calling the PM-API firmware layer. >> + Permitted values are: >> + - "smc" : To be used in configurations without a hypervisor >> + - "hvc" : To be used when hypervisor is present > > Do you really use both? >
SMCs definitely yes.
Interface was designed in that way and I don't know if people are using it or not.
Not sure if Xen is blocking SMCs. I know we have discussed it but not sure if this is enabled by default or only for certain configurations. Also not sure if xen contains handler for hvc. Edgar: Do you know?
Thanks, Michal
| |