From: Minchan Kim <minchan@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
hyesoo.yu@samsung.com, willy@infradead.org, david@redhat.com,
iamjoonsoo.kim@lge.com, vbabka@suse.cz, surenb@google.com,
pullip.cho@samsung.com, joaodias@google.com, hridya@google.com,
sumit.semwal@linaro.org, john.stultz@linaro.org,
Brian.Starkey@arm.com, linux-media@vger.kernel.org,
devicetree@vger.kernel.org, robh@kernel.org,
christian.koenig@amd.com, linaro-mm-sig@lists.linaro.org,
Minchan Kim <minchan@kernel.org>
Subject: [PATCH 4/4] dma-heap: Devicetree binding for chunk heap
Date: Tue, 17 Nov 2020 10:19:35 -0800 [thread overview]
Message-ID: <20201117181935.3613581-5-minchan@kernel.org> (raw)
In-Reply-To: <20201117181935.3613581-1-minchan@kernel.org>
From: Hyesoo Yu <hyesoo.yu@samsung.com>
Document devicetree binding for chunk heap on dma heap framework
Signed-off-by: Hyesoo Yu <hyesoo.yu@samsung.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
---
.../bindings/dma-buf/chunk_heap.yaml | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma-buf/chunk_heap.yaml
diff --git a/Documentation/devicetree/bindings/dma-buf/chunk_heap.yaml b/Documentation/devicetree/bindings/dma-buf/chunk_heap.yaml
new file mode 100644
index 000000000000..f382bee02778
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma-buf/chunk_heap.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma-buf/chunk_heap.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Device tree binding for chunk heap on DMA HEAP FRAMEWORK
+
+maintainers:
+ - Sumit Semwal <sumit.semwal@linaro.org>
+
+description: |
+ The chunk heap is backed by the Contiguous Memory Allocator (CMA) and
+ allocates the buffers that are made up to a list of fixed size chunks
+ taken from CMA. Chunk sizes are configurated when the heaps are created.
+
+properties:
+ compatible:
+ enum:
+ - dma_heap,chunk
+
+ memory-region:
+ maxItems: 1
+
+ alignment:
+ maxItems: 1
+
+required:
+ - compatible
+ - memory-region
+ - alignment
+
+additionalProperties: false
+
+examples:
+ - |
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ chunk_memory: chunk_memory {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x10000000>;
+ };
+ };
+
+ chunk_default_heap: chunk_default_heap {
+ compatible = "dma_heap,chunk";
+ memory-region = <&chunk_memory>;
+ alignment = <0x10000>;
+ };
--
2.29.2.299.gdc1121823c-goog
next prev parent reply other threads:[~2020-11-17 18:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 18:19 [PATCH 0/4] Chunk Heap Support on DMA-HEAP Minchan Kim
2020-11-17 18:19 ` [PATCH 1/4] mm: introduce cma_alloc_bulk API Minchan Kim
2020-11-23 14:15 ` David Hildenbrand
2020-11-25 20:12 ` Minchan Kim
2020-11-17 18:19 ` [PATCH 2/4] dma-buf: add export symbol for dma-heap Minchan Kim
2020-11-18 5:18 ` John Stultz
2020-11-17 18:19 ` [PATCH 3/4] dma-buf: heaps: add chunk heap to dmabuf heaps Minchan Kim
2020-11-18 9:00 ` Hillf Danton
2020-11-19 1:16 ` Hyesoo Yu
2020-11-17 18:19 ` Minchan Kim [this message]
2020-11-18 3:00 ` [PATCH 4/4] dma-heap: Devicetree binding for chunk heap John Stultz
2020-11-19 1:14 ` Hyesoo Yu
2020-11-19 3:19 ` John Stultz
2020-11-19 6:30 ` Hyesoo Yu
2020-12-09 23:53 ` Minchan Kim
2020-12-10 8:15 ` John Stultz
2020-12-10 16:06 ` Minchan Kim
2020-12-10 22:40 ` John Stultz
2020-12-10 23:30 ` Minchan Kim
2020-12-08 16:56 ` [PATCH 0/4] Chunk Heap Support on DMA-HEAP Nicolas Dufresne
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