[PATCH v2 11/12] dt-bindings: nand: Add fsl,elbc-fcm-nand

J. Neuschäfer via B4 Relay
2025-02-07T21:30:37Z

From: "J. Neuschäfer" <j.ne@posteo.net>

Formalize the binding already supported by the fsl_elbc_nand.c driver
and used in several device trees in arch/powerpc/boot/dts/.

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---

V2:
- split out from fsl,elbc binding patch
- constrain #address-cells and #size-cells
- add a general description
- use unevaluatedProperties=false instead of additionalProperties=false
- fix property order to comply with dts coding style
- include raw-nand-chip.yaml instead of nand-chip.yaml
---
.../devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml | 68 ++++++++++++++++++++++
1 file changed, 68 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml b/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..1de97bb24fa4a83e2ea5d94ab822dd0e37baa102
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/fsl,elbc-fcm-nand.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NAND flash attached to Freescale eLBC
+
+description:
+ The Freescale Enhanced Local Bus controller (eLBC) contains logic to
+ interface with NAND flash, called the NAND Flash Control Machine (FCM).
+ This binding describes flash attached to an eLBC using the FCM.
+
+maintainers:
+ - J. Neuschäfer <j.ne@posteo.net>
+
+allOf:
+ - $ref: raw-nand-chip.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - fsl,mpc8313-fcm-nand
+ - fsl,mpc8315-fcm-nand
+ - fsl,mpc8377-fcm-nand
+ - fsl,mpc8378-fcm-nand
+ - fsl,mpc8379-fcm-nand
+ - fsl,mpc8536-fcm-nand
+ - fsl,mpc8569-fcm-nand
+ - fsl,mpc8572-fcm-nand
+ - fsl,p1020-fcm-nand
+ - fsl,p1021-fcm-nand
+ - fsl,p1025-fcm-nand
+ - fsl,p2020-fcm-nand
+ - const: fsl,elbc-fcm-nand
+ - const: fsl,elbc-fcm-nand
+
+ reg:
+ maxItems: 1
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ localbus {
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ nand@1,0 {
+ compatible = "fsl,mpc8315-fcm-nand",
+ "fsl,elbc-fcm-nand";
+ reg = <0x1 0x0 0x2000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };

--
2.48.0.rc1.219.gb6b6757d772