[PATCH] dt-bindings: spi: Add YAML DT binding document for trivial devices

[Marek Vasut <marex@xxxxxxx>]

Document trivial SPI devices in single YAML DT binding document.
Currently this overlaps Linux kernel spidev.

Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
To: linux-spi@xxxxxxxxxxxxxxx
---
 .../devicetree/bindings/spi/trivial.yaml      | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/trivial.yaml

diff --git a/Documentation/devicetree/bindings/spi/trivial.yaml b/Documentation/devicetree/bindings/spi/trivial.yaml
new file mode 100644
index 0000000000000..6d6e682948dfc
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/trivial.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/trivial.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trivial SPI device DT bindings
+
+maintainers:
+  - Marek Vasut <marex@xxxxxxx>
+  - Mark Brown <broonie@xxxxxxxxxx>
+
+properties:
+  compatible:
+    enum:
+      - cisco,spi-petra
+      - dh,dhcom-board
+      - lineartechnology,ltc2488
+      - lwn,bk4
+      - menlo,m53cpld
+      - micron,spi-authenta
+      - rohm,dh2228fv
+      - semtech,sx1301
+
+  reg:
+    description: Chip select
+    maxItems: 1
+
+  spi-max-frequency: true
+  spi-cs-high: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      spidev@0 {
+        compatible = "rohm,dh2228fv";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+      };
+    };
-- 
2.35.1