[PATCH 1/3] dt-bindings: nvmem: Add a binding for the RPi Firmware OTP register

[Gregor Herburger]

The firmware running on the Raspberry Pi VideoCore can be used to access
OTP registers. There are two OTP regions (private and customer). Add a
binding for these.

Signed-off-by: Gregor Herburger <gregor.herburger at linutronix.de>
---
 .../bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
index 983ea80eaec9..975c8927d75b 100644
--- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
@@ -137,6 +137,20 @@ required:
   - compatible
   - mboxes
 
+patternProperties:
+  "^otp-(customer|private)$":
+    type: object
+    additionalProperties: false
+
+    properties:
+      compatible:
+        enum:
+          - raspberrypi,firmware-otp-customer
+          - raspberrypi,firmware-otp-private
+
+    required:
+      - compatible
+
 additionalProperties: false
 
 examples:
@@ -156,6 +170,10 @@ examples:
             #gpio-cells = <2>;
         };
 
+        otp: otp-private {
+            compatible = "raspberrypi,firmware-otp-private";
+        };
+
         reset: reset {
             compatible = "raspberrypi,firmware-reset";
             #reset-cells = <1>;

-- 
2.47.3