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Subject[PATCH 1/2] dt-bindings: microchip-otpc: document Microchip OTPC
Date
Document Microchip OTP controller.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
.../bindings/nvmem/microchip-otpc.yaml | 55 +++++++++++++++++++
include/dt-bindings/nvmem/microchip,otpc.h | 18 ++++++
2 files changed, 73 insertions(+)
create mode 100644 Documentation/devicetree/bindings/nvmem/microchip-otpc.yaml
create mode 040000 include/dt-bindings/nvmem
create mode 100644 include/dt-bindings/nvmem/microchip,otpc.h

diff --git a/Documentation/devicetree/bindings/nvmem/microchip-otpc.yaml b/Documentation/devicetree/bindings/nvmem/microchip-otpc.yaml
new file mode 100644
index 000000000000..a8df7fee5c2b
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/microchip-otpc.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/microchip-otpc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip SAMA7G5 OTP Controller (OTPC) device tree bindings
+
+maintainers:
+ - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description: |
+ This binding represents the OTP controller found on SAMA7G5 SoC.
+
+allOf:
+ - $ref: "nvmem.yaml#"
+
+properties:
+ compatible:
+ items:
+ - const: microchip,sama7g5-otpc
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/at91.h>
+ #include <dt-bindings/nvmem/microchip,otpc.h>
+
+ otpc: efuse@e8c00000 {
+ compatible = "microchip,sama7g5-otpc", "syscon";
+ reg = <0xe8c00000 0xec>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ temperature_calib: calib@1 {
+ reg = <OTP_PKT(1) OTP_PKT_SAMA7G5_TEMP_CALIB_LEN>;
+ };
+ };
+
+...
diff --git a/include/dt-bindings/nvmem/microchip,otpc.h b/include/dt-bindings/nvmem/microchip,otpc.h
new file mode 100644
index 000000000000..44b6ed3b8f18
--- /dev/null
+++ b/include/dt-bindings/nvmem/microchip,otpc.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_NVMEM_MICROCHIP_OTPC_H
+#define _DT_BINDINGS_NVMEM_MICROCHIP_OTPC_H
+
+/*
+ * Need to have it as a multiple of 4 as NVMEM memory is registered with
+ * stride = 4.
+ */
+#define OTP_PKT(id) ((id) * 4)
+
+/*
+ * Temperature calibration packet length for SAMA7G5: 1 words header,
+ * 18 words payload.
+ */
+#define OTP_PKT_SAMA7G5_TEMP_CALIB_LEN (19 * 4)
+
+#endif
--
2.34.1
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