Add a dtschema for the SPI-NAND controller on the RTL9300 SoCs. The
controller supports
* Serial/Dual/Quad data with
* PIO and DMA data read/write operation
* Configurable flash access timing
Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
---
Notes:
Changes in v5:
- Use realtek,rtl9301-snand as a fallback to the other compatibles
Changes in v4:
- Adjust commit message subject to refer to one of the used compatibles
Changes in v3:
- drop wildcard rtl9300-snand
- drop redundant descriptions
- drop clock-names
Changes in v2:
- Add clocks
- For now I've kept realtek,rtl9300-snand to identify the IP block used
in the various rtl930x chips. If the consensus is to drop this I can
send a v3 with an updated driver to add the chip specific complatibles.
.../bindings/spi/realtek,rtl9301-snand.yaml | 62 +++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml
diff --git a/Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml b/Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml
new file mode 100644
index 000000000000..36d79a90552b
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/realtek,rtl9301-snand.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SPI-NAND Flash Controller for Realtek RTL9300 SoCs
+
+maintainers:
+ - Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
+
+description:
+ The Realtek RTL9300 SoCs have a built in SPI-NAND controller. It supports
+ typical SPI-NAND page cache operations in single, dual or quad IO mode.
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - realtek,rtl9302b-snand
+ - realtek,rtl9302c-snand
+ - realtek,rtl9303-snand
+ - const: realtek,rtl9301-snand
+ - const: realtek,rtl9301-snand
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+allOf:
+ - $ref: /schemas/spi/spi-controller.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ spi@1a400 {
+ compatible = "realtek,rtl9302c-snand", "realtek,rtl9301-snand";
+ reg = <0x1a400 0x44>;
+ interrupt-parent = <&intc>;
+ interrupts = <19>;
+ clocks = <&lx_clk>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ compatible = "spi-nand";
+ reg = <0>;
+ };
+ };
--
2.47.0
