linux-kernel - [PATCH] dt-bindings: firmware: xilinx: Describe soc-vvmem subnode

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Date: Mon, 29 Jan 2024 13:25:06 +0100
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
	<michal.simek@...inx.com>, <git@...inx.com>
CC: Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh+dt@...nel.org>, "open
 list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@...r.kernel.org>, kishore Manne <nava.kishore.manne@....com>,
	"moderated list:ARM/ZYNQ ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] dt-bindings: firmware: xilinx: Describe soc-vvmem subnode

Describe soc-nvmem subnode as the part of firmware node. The name can't be
pure nvmem because dt-schema already defines it as array property that's
why different name should be used.

Signed-off-by: Michal Simek <michal.simek@....com>
---

Dt binding for nvmem node has been already merged and it is the part of
linux-next tree.
Here is the reference to it just in case:
https://lore.kernel.org/r/170635581622.41421.8980881999042944764.b4-ty@linaro.org

---
 .../bindings/firmware/xilinx/xlnx,zynqmp-firmware.yaml   | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.yaml b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.yaml
index 7586fbff7ad6..108772ef574f 100644
--- a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.yaml
+++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.yaml
@@ -62,6 +62,12 @@ properties:
       interface.
     type: object
 
+  soc-nvmem:
+    $ref: /schemas/nvmem/xlnx,zynqmp-nvmem.yaml#
+    description: The ZynqMP MPSoC provides access to the hardware related data
+      like SOC revision, IDCODE and specific purpose efuses.
+    type: object
+
   pcap:
     $ref: /schemas/fpga/xlnx,zynqmp-pcap-fpga.yaml
     description: The ZynqMP SoC uses the PCAP (Processor Configuration Port) to
@@ -110,6 +116,9 @@ examples:
     firmware {
       zynqmp_firmware: zynqmp-firmware {
         #power-domain-cells = <1>;
+        soc-nvmem {
+          compatible = "xlnx,zynqmp-nvmem-fw";
+        };
         gpio {
           compatible = "xlnx,zynqmp-gpio-modepin";
           gpio-controller;
-- 
2.36.1