diff mbox series

[v3,5/6] dt-bindings: nvmem: Add bindings for ZynqMP nvmem driver

Message ID 20190121173835.21173-6-nava.manne@xilinx.com (mailing list archive)
State New, archived
Headers show
Series dt-bindings: Firmware node binding for ZynqMP core | expand

Commit Message

Nava kishore Manne Jan. 21, 2019, 5:38 p.m. UTC 
Add documentation to describe Xilinx ZynqMP nvmem driver
bindings.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
---
Changes for v3:
		-Added nvmem node as child of FW. Since nvmem driver is a provider.
  
 .../bindings/nvmem/xlnx,zynqmp-nvmem.txt      | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt

Comments

Rob Herring (Arm) Jan. 21, 2019, 3:47 p.m. UTC | #1 
On Mon, 21 Jan 2019 23:08:34 +0530, Nava kishore Manne wrote:
> Add documentation to describe Xilinx ZynqMP nvmem driver
> bindings.
> 
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> ---
> Changes for v3:
> 		-Added nvmem node as child of FW. Since nvmem driver is a provider.
>   
>  .../bindings/nvmem/xlnx,zynqmp-nvmem.txt      | 47 +++++++++++++++++++
>  1 file changed, 47 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt
new file mode 100644
index 000000000000..2043c8284f8c
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt
@@ -0,0 +1,47 @@ 
+--------------------------------------------------------------------------
+=  Zynq UltraScale+ MPSoC nvmem firmware driver binding =
+--------------------------------------------------------------------------
+The nvmem_firmware node provides access to the hardware related data
+like soc revision, IDCODE... etc, By using the firmware interface.
+
+Required properties:
+- compatible: should be "xlnx,zynqmp-nvmem-fw"
+
+= Data cells =
+Are child nodes of silicon id, bindings of which as described in
+bindings/nvmem/nvmem.txt
+
+-------
+ Example
+-------
+firmware {
+	zynqmp_firmware: zynqmp-firmware {
+		compatible = "xlnx,zynqmp-firmware";
+		method = "smc";
+
+		nvmem_firmware {
+			compatible = "xlnx,zynqmp-nvmem-fw";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			/* Data cells */
+			soc_revision: soc_revision {
+				reg = <0x0 0x4>;
+			};
+		};
+	};
+};
+
+= Data consumers =
+Are device nodes which consume nvmem data cells.
+
+For example:
+	pcap {
+		...
+
+		nvmem-cells = <&soc_revision>;
+		nvmem-cell-names = "soc_revision";
+
+		...
+	};
+