Squashed 'dts/upstream/' content from commit aaba2d45dc2a
git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/Bindings/virtio/mmio.yaml b/Bindings/virtio/mmio.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/virtio/mmio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: virtio memory mapped devices
+
+maintainers:
+ - Jean-Philippe Brucker <jean-philippe@linaro.org>
+
+description:
+ See https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=virtio for
+ more details.
+
+properties:
+ compatible:
+ const: virtio,mmio
+
+ reg:
+ maxItems: 1
+
+ dma-coherent: true
+
+ interrupts:
+ maxItems: 1
+
+ '#iommu-cells':
+ description: Required when the node corresponds to a virtio-iommu device.
+ const: 1
+
+ iommus:
+ description: Required for devices making accesses thru an IOMMU.
+ maxItems: 1
+
+ wakeup-source:
+ type: boolean
+ description: Required for setting irq of a virtio_mmio device as wakeup source.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+additionalProperties:
+ type: object
+
+examples:
+ - |
+ virtio@3000 {
+ compatible = "virtio,mmio";
+ reg = <0x3000 0x100>;
+ interrupts = <41>;
+
+ /* Device has endpoint ID 23 */
+ iommus = <&viommu 23>;
+ };
+
+ viommu: iommu@3100 {
+ compatible = "virtio,mmio";
+ reg = <0x3100 0x100>;
+ interrupts = <42>;
+
+ #iommu-cells = <1>;
+ };
+
+...
diff --git a/Bindings/virtio/pci-iommu.yaml b/Bindings/virtio/pci-iommu.yaml
new file mode 100644
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+++ b/Bindings/virtio/pci-iommu.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/virtio/pci-iommu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: virtio-iommu device using the virtio-pci transport
+
+maintainers:
+ - Jean-Philippe Brucker <jean-philippe@linaro.org>
+
+description: |
+ When virtio-iommu uses the PCI transport, its programming interface is
+ discovered dynamically by the PCI probing infrastructure. However the
+ device tree statically describes the relation between IOMMU and DMA
+ masters. Therefore, the PCI root complex that hosts the virtio-iommu
+ contains a child node representing the IOMMU device explicitly.
+
+ DMA from the IOMMU device isn't managed by another IOMMU. Therefore the
+ virtio-iommu node doesn't have an "iommus" property, and is omitted from
+ the iommu-map property of the root complex.
+
+properties:
+ # If compatible is present, it should contain the vendor and device ID
+ # according to the PCI Bus Binding specification. Since PCI provides
+ # built-in identification methods, compatible is not actually required.
+ compatible:
+ oneOf:
+ - items:
+ - const: virtio,pci-iommu
+ - const: pci1af4,1057
+ - items:
+ - const: pci1af4,1057
+
+ reg:
+ description: |
+ PCI address of the IOMMU. As defined in the PCI Bus Binding
+ reference, the reg property is a five-cell address encoded as (phys.hi
+ phys.mid phys.lo size.hi size.lo). phys.hi should contain the device's
+ BDF as 0b00000000 bbbbbbbb dddddfff 00000000. The other cells should be
+ zero. See Documentation/devicetree/bindings/pci/pci.txt
+
+ '#iommu-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - '#iommu-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ bus {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie@40000000 {
+ device_type = "pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ reg = <0x0 0x40000000 0x0 0x1000000>;
+ ranges = <0x02000000 0x0 0x41000000 0x0 0x41000000 0x0 0x0f000000>;
+
+ /*
+ * The IOMMU manages all functions in this PCI domain except
+ * itself. Omit BDF 00:01.0.
+ */
+ iommu-map = <0x0 &iommu0 0x0 0x8
+ 0x9 &iommu0 0x9 0xfff7>;
+
+ /* The IOMMU programming interface uses slot 00:01.0 */
+ iommu0: iommu@1,0 {
+ compatible = "pci1af4,1057";
+ reg = <0x800 0 0 0 0>;
+ #iommu-cells = <1>;
+ };
+ };
+
+ pcie@50000000 {
+ device_type = "pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ reg = <0x0 0x50000000 0x0 0x1000000>;
+ ranges = <0x02000000 0x0 0x51000000 0x0 0x51000000 0x0 0x0f000000>;
+
+ /*
+ * The IOMMU also manages all functions from this domain,
+ * with endpoint IDs 0x10000 - 0x1ffff
+ */
+ iommu-map = <0x0 &iommu0 0x10000 0x10000>;
+ };
+
+ ethernet {
+ /* The IOMMU manages this platform device with endpoint ID 0x20000 */
+ iommus = <&iommu0 0x20000>;
+ };
+ };
+
+...
diff --git a/Bindings/virtio/virtio-device.yaml b/Bindings/virtio/virtio-device.yaml
new file mode 100644
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+++ b/Bindings/virtio/virtio-device.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/virtio/virtio-device.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Virtio device
+
+maintainers:
+ - Viresh Kumar <viresh.kumar@linaro.org>
+
+description:
+ These bindings are applicable to virtio devices irrespective of the bus they
+ are bound to, like mmio or pci.
+
+# We need a select here so we don't match all nodes with 'virtio,mmio'
+properties:
+ compatible:
+ pattern: "^virtio,device[0-9a-f]{1,8}$"
+ description: Virtio device nodes.
+ "virtio,deviceID", where ID is the virtio device id. The textual
+ representation of ID shall be in lower case hexadecimal with leading
+ zeroes suppressed.
+
+required:
+ - compatible
+
+additionalProperties: true
+
+examples:
+ - |
+ virtio@3000 {
+ compatible = "virtio,mmio";
+ reg = <0x3000 0x100>;
+ interrupts = <43>;
+
+ i2c {
+ compatible = "virtio,device22";
+ };
+ };
+...