1 files changed, 0 insertions, 97 deletions
diff --git a/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml b/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
deleted file mode 100644
index 457de0920c..0000000000
--- a/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
+++ /dev/null
@@ -1,97 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/reserved-memory/shared-dma-pool.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: /reserved-memory DMA pool
-
-maintainers:
-  - devicetree-spec@vger.kernel.org
-
-allOf:
-  - $ref: reserved-memory.yaml
-
-properties:
-  compatible:
-    oneOf:
-      - const: shared-dma-pool
-        description: >
-          This indicates a region of memory meant to be used as a shared
-          pool of DMA buffers for a set of devices. It can be used by an
-          operating system to instantiate the necessary pool management
-          subsystem if necessary.
-
-      - const: restricted-dma-pool
-        description: >
-          This indicates a region of memory meant to be used as a pool
-          of restricted DMA buffers for a set of devices. The memory
-          region would be the only region accessible to those devices.
-          When using this, the no-map and reusable properties must not
-          be set, so the operating system can create a virtual mapping
-          that will be used for synchronization. The main purpose for
-          restricted DMA is to mitigate the lack of DMA access control
-          on systems without an IOMMU, which could result in the DMA
-          accessing the system memory at unexpected times and/or
-          unexpected addresses, possibly leading to data leakage or
-          corruption. The feature on its own provides a basic level of
-          protection against the DMA overwriting buffer contents at
-          unexpected times. However, to protect against general data
-          leakage and system memory corruption, the system needs to
-          provide way to lock down the memory access, e.g., MPU. Note
-          that since coherent allocation needs remapping, one must set
-          up another device coherent pool by shared-dma-pool and use
-          dma_alloc_from_dev_coherent instead for atomic coherent
-          allocation.
-
-  linux,cma-default:
-    type: boolean
-    description: >
-      If this property is present, then Linux will use the region for
-      the default pool of the contiguous memory allocator.
-
-  linux,dma-default:
-    type: boolean
-    description: >
-      If this property is present, then Linux will use the region for
-      the default pool of the consistent DMA allocator.
-
-if:
-  properties:
-    compatible:
-      contains:
-        const: restricted-dma-pool
-then:
-  properties:
-    no-map: false
-    reusable: false
-
-unevaluatedProperties: false
-
-examples:
-  - |
-      reserved-memory {
-          #address-cells = <1>;
-          #size-cells = <1>;
-          ranges;
-
-          /* global autoconfigured region for contiguous allocations */
-          linux,cma {
-              compatible = "shared-dma-pool";
-              reusable;
-              size = <0x4000000>;
-              alignment = <0x2000>;
-              linux,cma-default;
-          };
-
-          display_reserved: framebuffer@78000000 {
-              reg = <0x78000000 0x800000>;
-          };
-
-          restricted_dma_reserved: restricted-dma-pool@50000000 {
-              compatible = "restricted-dma-pool";
-              reg = <0x50000000 0x4000000>;
-          };
-      };
-
-...