dt-bindings: slimbus: convert bus description to DT schema

Convert the SLIMbus bus description bindings to DT Schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20221118065246.6835-11-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/slimbus/slimbus.yaml b/Documentation/devicetree/bindings/slimbus/slimbus.yaml
new file mode 100644
index 000000000000..22513fb7c59a
--- /dev/null
+++ b/Documentation/devicetree/bindings/slimbus/slimbus.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/slimbus/slimbus.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SLIM (Serial Low Power Interchip Media) bus
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description:
+  SLIMbus is a 2-wire bus, and is used to communicate with peripheral
+  components like audio-codec.
+
+properties:
+  $nodename:
+    pattern: "^slim(@.*|-[0-9a-f])*$"
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^.*@[0-9a-f]+,[0-9a-f]+$":
+    type: object
+    description: |
+      Every SLIMbus controller node can contain zero or more child nodes
+      representing slave devices on the bus. Every SLIMbus slave device is
+      uniquely determined by the enumeration address containing 4 fields::
+      Manufacturer ID, Product code, Device index, and Instance value for the
+      device.
+
+      If child node is not present and it is instantiated after device
+      discovery (slave device reporting itself present).
+
+      In some cases it may be necessary to describe non-probeable device
+      details such as non-standard ways of powering up a device. In such cases,
+      child nodes for those devices will be present as slaves of the SLIMbus
+      controller.
+
+    properties:
+      compatible:
+        pattern: "^slim[0-9a-f]+,[0-9a-f]+$"
+
+      reg:
+        maxItems: 1
+        description: |
+          Pair of (device index, instande ID), where::
+           - Device index, which uniquely identifies multiple devices within a
+             single component.
+           - Instance ID, can be used for the cases where multiple devices of
+             the same type or class are attached to the bus.
+
+    required:
+      - compatible
+      - reg
+
+    additionalProperties: true
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: true
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8960.h>
+    #include <dt-bindings/clock/qcom,lcc-msm8960.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        slim@28080000 {
+            compatible = "qcom,apq8064-slim", "qcom,slim";
+            reg = <0x28080000 0x2000>, <0x80207c 4>;
+            reg-names = "ctrl", "slew";
+            interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&lcc SLIMBUS_SRC>, <&lcc AUDIO_SLIMBUS_CLK>;
+            clock-names = "iface", "core";
+            #address-cells = <2>;
+            #size-cells = <0>;
+
+            audio-codec@1,0 {
+                compatible = "slim217,60";
+                reg = <1 0>;
+            };
+        };
+    };