From: Hyesoo Yu <hyesoo.yu@samsung.com>
To: sumit.semwal@linaro.org
Cc: minchan@kernel.org, akpm@linux-foundation.org,
iamjoonsoo.kim@lge.com, joaodias@google.com, linux-mm@kvack.org,
pullip.cho@samsung.com, surenb@google.com, vbabka@suse.cz,
afd@ti.com, benjamin.gaignard@linaro.org, lmark@codeaurora.org,
labbott@redhat.com, Brian.Starkey@arm.com,
john.stultz@linaro.org, christian.koenig@amd.com,
linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org,
robh+dt@kernel.org, devicetree@vger.kernel.org,
Hyesoo Yu <hyesoo.yu@samsung.com>
Subject: [PATCH 3/3] dma-heap: Devicetree binding for chunk heap
Date: Tue, 18 Aug 2020 17:04:15 +0900 [thread overview]
Message-ID: <20200818080415.7531-4-hyesoo.yu@samsung.com> (raw)
In-Reply-To: <20200818080415.7531-1-hyesoo.yu@samsung.com>
Document devicetree binding for chunk heap on dma heap framework
Signed-off-by: Hyesoo Yu <hyesoo.yu@samsung.com>
---
.../devicetree/bindings/dma-buf/chunk_heap.yaml | 46 ++++++++++++++++++++++
1 file changed, 46 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 0000000..1ee8fad
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma-buf/chunk_heap.yaml
@@ -0,0 +1,46 @@
+# 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
+
+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>;
+ };
--
2.7.4
next prev parent reply other threads:[~2020-08-18 7:46 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200818074547epcas2p21e0c2442873d03800c7bc2c3e76405d6@epcas2p2.samsung.com>
2020-08-18 8:04 ` [PATCH 0/3] Chunk Heap Support on DMA-HEAP Hyesoo Yu
[not found] ` <CGME20200818074550epcas2p1e12121bc6e38086277766f08a59767ff@epcas2p1.samsung.com>
2020-08-18 8:04 ` [PATCH 1/3] dma-buf: add missing EXPORT_SYMBOL_GPL() for dma heaps Hyesoo Yu
[not found] ` <CGME20200818074553epcas2p240c2129fb8186f53e03abb0a0725461c@epcas2p2.samsung.com>
2020-08-18 8:04 ` [PATCH 2/3] dma-buf: heaps: add chunk heap to dmabuf heaps Hyesoo Yu
2020-08-18 10:11 ` David Hildenbrand
2020-08-18 10:17 ` kernel test robot
[not found] ` <CGME20200818074554epcas2p2702e648ba975ea6fbe33c84396b152a9@epcas2p2.samsung.com>
2020-08-18 8:04 ` Hyesoo Yu [this message]
2020-08-18 16:48 ` [PATCH 3/3] dma-heap: Devicetree binding for chunk heap Rob Herring
2020-08-21 8:21 ` Hyesoo Yu
2020-08-18 10:55 ` [PATCH 0/3] Chunk Heap Support on DMA-HEAP Brian Starkey
2020-08-19 3:46 ` Cho KyongHo
2020-08-19 13:22 ` Brian Starkey
2020-08-21 7:38 ` Cho KyongHo
2020-08-18 20:55 ` John Stultz
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