The shared-dmb-pool compatible string creates a Designated Movable
Block to contain a shared pool of DMA buffers.
Signed-off-by: Doug Berger <opendmb@xxxxxxxxx>
---
.../bindings/reserved-memory/shared-dma-pool.yaml | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml b/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
index 618105f079be..85824fe05ac9 100644
--- a/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
+++ b/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
@@ -22,6 +22,14 @@ properties:
operating system to instantiate the necessary pool management
subsystem if necessary.
+ - const: shared-dmb-pool
+ description: >
+ This indicates a shared-dma-pool region that is located within
+ a Designated Movable Block. The operating system is free to
+ use unallocated memory for movable allocations in this region.
+ Devices need to be tolerant of allocation latency to use this
+ pool.
+
- const: restricted-dma-pool
description: >
This indicates a region of memory meant to be used as a pool
--
2.25.1
