dt-bindings: iommu: Convert QCOM IOMMU to YAML

Convert the Qualcomm IOMMU bindings to YAML.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230406-topic-qciommu-v3-1-aa0e4f018191@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

Author: konradybcio

Documentation/devicetree/bindings/iommu/qcom,iommu.txt

@@ -0,0 +1,113 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iommu/qcom,iommu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies legacy IOMMU implementations
+
+maintainers:
+  - Konrad Dybcio <konrad.dybcio@linaro.org>
+
+description: |
+  Qualcomm "B" family devices which are not compatible with arm-smmu have
+  a similar looking IOMMU, but without access to the global register space
+  and optionally requiring additional configuration to route context IRQs
+  to non-secure vs secure interrupt line.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - qcom,msm8916-iommu
+          - qcom,msm8953-iommu
+      - const: qcom,msm-iommu-v1
+
+  clocks:
+    items:
+      - description: Clock required for IOMMU register group access
+      - description: Clock required for underlying bus access
+
+  clock-names:
+    items:
+      - const: iface
+      - const: bus
+
+  power-domains:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  ranges: true
+
+  qcom,iommu-secure-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The SCM secure ID of the IOMMU instance.
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+  '#iommu-cells':
+    const: 1
+
+patternProperties:
+  "^iommu-ctx@[0-9a-f]+$":
+    type: object
+    additionalProperties: false
+    properties:
+      compatible:
+        enum:
+          - qcom,msm-iommu-v1-ns
+          - qcom,msm-iommu-v1-sec
+
+      interrupts:
+        maxItems: 1
+
+      reg:
+        maxItems: 1
+
+    required:
+      - compatible
+      - interrupts
+      - reg
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - ranges
+  - '#address-cells'
+  - '#size-cells'
+  - '#iommu-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8916.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    apps_iommu: iommu@1e20000 {
+      compatible = "qcom,msm8916-iommu", "qcom,msm-iommu-v1";
+      reg = <0x01ef0000 0x3000>;
+      clocks = <&gcc GCC_SMMU_CFG_CLK>,
+               <&gcc GCC_APSS_TCU_CLK>;
+      clock-names = "iface", "bus";
+      qcom,iommu-secure-id = <17>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+      #iommu-cells = <1>;
+      ranges = <0 0x01e20000 0x40000>;
+
+      /* mdp_0: */
+      iommu-ctx@4000 {
+        compatible = "qcom,msm-iommu-v1-ns";
+        reg = <0x4000 0x1000>;
+        interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
+      };
+    };