Re: [PATCHv2 1/3] dt: xilinx: zynqmp: Add bindings for PM firmware

From: Sudeep Holla
Date: Wed Aug 16 2017 - 11:44:44 EST




On 16/08/17 13:24, Michal Simek wrote:
> From: Soren Brinkmann <soren.brinkmann@xxxxxxxxxx>
>
> Document the DT bindings for the Zynq UltraScale+ PM Firmware.
>
> Signed-off-by: Soren Brinkmann <soren.brinkmann@xxxxxxxxxx>
> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
> ---
>
> Changes in v2:
> - Move to bindings/firmware and also add it to firmware node
> Reported-by Rob
>
> .../bindings/firmware/xlnx,zynqmp-pm.txt | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/firmware/xlnx,zynqmp-pm.txt
>
> diff --git a/Documentation/devicetree/bindings/firmware/xlnx,zynqmp-pm.txt b/Documentation/devicetree/bindings/firmware/xlnx,zynqmp-pm.txt
> new file mode 100644
> index 000000000000..7de0c82758b3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/firmware/xlnx,zynqmp-pm.txt
> @@ -0,0 +1,22 @@
> +Xilinx Zynq MPSoC Firmware Device Tree Bindings
> +
> +The zynqmp-pm node describes the interface to platform firmware.
> +
> +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
> + - interrupts: Interrupt specifier

What exactly is this interrupt ? I see it's not SGI, so if it's SPI,
where does this originate from ? How is that dealt ?

--
Regards,
Sudeep