dt-bindings: nvmem: add google,gs101-otp

Add binding for the OTP controller found on Google GS101.

Reviewed-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://patch.msgid.link/20251222-gs101-chipid-v4-1-aa8e20ce7bb3@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

1 files changed, 61 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/nvmem/google,gs101-otp.yaml b/Documentation/devicetree/bindings/nvmem/google,gs101-otp.yaml
new file mode 100644
index 000000000000..99e322c72f9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/google,gs101-otp.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/google,gs101-otp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Google GS101 OTP Controller
+
+maintainers:
+  - Tudor Ambarus <tudor.ambarus@linaro.org>
+
+description: |
+  OTP controller drives a NVMEM memory where system or user specific data
+  can be stored. The OTP controller register space is of interest as well
+  because it contains dedicated registers where it stores the Product ID
+  and the Chip ID (apart other things like TMU or ASV info).
+
+allOf:
+  - $ref: nvmem.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: google,gs101-otp
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: pclk
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/google,gs101.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    efuse@10000000 {
+        compatible = "google,gs101-otp";
+        reg = <0x10000000 0xf084>;
+        clocks = <&cmu_misc CLK_GOUT_MISC_OTP_CON_TOP_PCLK>;
+        clock-names = "pclk";
+        interrupts = <GIC_SPI 752 IRQ_TYPE_LEVEL_HIGH>;
+    };