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linux-7.2.3/Documentation/devicetree/bindings/slimbus/qcom,slim-ngd.yaml

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+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/slimbus/qcom,slim-ngd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm SoC SLIMBus Non Generic Device (NGD) Controller
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description:
+  SLIMBus NGD controller is a light-weight driver responsible for communicating
+  with SLIMBus slaves directly over the bus using messaging interface and
+  communicating with master component residing on ADSP for bandwidth and
+  data-channel management
+
+properties:
+  compatible:
+    enum:
+      - qcom,slim-ngd-v1.5.0        # for MSM8996
+      - qcom,slim-ngd-v2.1.0        # for SDM845
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+  interrupts:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+patternProperties:
+  "^slim@[0-9a-f]+$":
+    type: object
+    $ref: slimbus.yaml#
+    description:
+      Each subnode represents an instance of NGD
+
+    properties:
+      reg:
+        maxItems: 1
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+  - dmas
+  - dma-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    slim-ngd@171c0000 {
+        compatible = "qcom,slim-ngd-v2.1.0";
+        reg = <0x171c0000 0x2c000>;
+        interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
+
+        dmas = <&slimbam 3>, <&slimbam 4>;
+        dma-names = "rx", "tx";
+        iommus = <&apps_smmu 0x1806 0x0>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        slim@1 {
+            reg = <1>;
+            #address-cells = <2>;
+            #size-cells = <0>;
+
+            codec@1,0 {
+                compatible = "slim217,250";
+                reg = <1 0>;
+                slim-ifc-dev = <&wcd9340_ifd>;
+
+                #sound-dai-cells = <1>;
+
+                interrupts-extended = <&tlmm 54 IRQ_TYPE_LEVEL_HIGH>;
+                interrupt-controller;
+                #interrupt-cells = <1>;
+
+                #clock-cells = <0>;
+                clock-frequency = <9600000>;
+                clock-output-names = "mclk";
+                qcom,micbias1-microvolt = <1800000>;
+                qcom,micbias2-microvolt = <1800000>;
+                qcom,micbias3-microvolt = <1800000>;
+                qcom,micbias4-microvolt = <1800000>;
+
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                reset-gpios = <&tlmm 64 GPIO_ACTIVE_HIGH>;
+
+                /* Rest of the WCD9340 codec */
+            };
+        };
+    };

linux-7.2.3/Documentation/devicetree/bindings/slimbus/slimbus.yaml

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+# 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:
+  $nodename:
+    pattern: "^slim(@.*|-([0-9]|[1-9][0-9]+))?$"
+
+  "#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/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        controller@28080000 {
+            compatible = "qcom,slim-ngd-v1.5.0";
+            reg = <0x091c0000 0x2c000>;
+            interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
+            dmas = <&slimbam 3>, <&slimbam 4>;
+            dma-names = "rx", "tx";
+            #address-cells = <1>;
+            #size-cells = <0>;
+            slim@1 {
+              reg = <1>;
+              #address-cells = <2>;
+              #size-cells = <0>;
+              codec@1,0 {
+                compatible = "slim217,1a0";
+                reg = <1 0>;
+              };
+            };
+          };
+        };