[PATCH v3 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware
From: mark.rutland@arm.com (Mark Rutland)
Date: 2018-01-31 18:03:54
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linux-devicetree, lkml
On Wed, Jan 24, 2018 at 03:21:11PM -0800, Jolly Shah wrote:
quoted hunk ↗ jump to hunk
Add documentation to describe Xilinx ZynqMP firmware driver bindings. Firmware driver provides an interface to firmware APIs. Interface APIs can be used by any driver to communicate to PMUFW (Platform Management Unit). Signed-off-by: Jolly Shah <redacted> Signed-off-by: Rajan Vaja <redacted> --- .../bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txtdiff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt new file mode 100644 index 0000000..a7aaf56 --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt@@ -0,0 +1,16 @@ +Xilinx Zynq MPSoC Firmware Device Tree Bindings + +The zynqmp-firmware node describes the interface to platform firmware.
Is there any documentation for this that can be referred to?
+ +Required properties: + - compatible: Must contain: "xlnx,zynqmp-firmware" + - 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
Please specify what exactly these mean. I assume these follow the SMCCC.
If so, this can be:
- method: The method of calling the PM-API firmware layer.
Permitted values are:
- "smc" : SMC #0, following the SMCCC
- "hvc" : HVC #0, following the SMCCC
Otherwise, this looks ok to me.
Thanks,
Mark.
+
+Examples:
+ zynqmp_firmware: zynqmp-firmware {
+ compatible = "xlnx,zynqmp-firmware";
+ method = "smc";
+ };
--
2.7.4