From: Minchan Kim <minchan@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
hyesoo.yu@samsung.com, david@redhat.com, mhocko@suse.com,
surenb@google.com, pullip.cho@samsung.com, joaodias@google.com,
hridya@google.com, john.stultz@linaro.org,
sumit.semwal@linaro.org, linux-media@vger.kernel.org,
devicetree@vger.kernel.org, hch@infradead.org,
robh+dt@kernel.org, linaro-mm-sig@lists.linaro.org,
Minchan Kim <minchan@kernel.org>
Subject: [PATCH v3 3/4] dt-bindings: reserved-memory: Make DMA-BUF CMA heap DT-configurable
Date: Tue, 12 Jan 2021 17:21:42 -0800 [thread overview]
Message-ID: <20210113012143.1201105-4-minchan@kernel.org> (raw)
In-Reply-To: <20210113012143.1201105-1-minchan@kernel.org>
From: Hyesoo Yu <hyesoo.yu@samsung.com>
Document devicetree binding for chunk cma heap on dma heap framework.
The DMA chunk heap supports the bulk allocation of higher order pages.
Signed-off-by: Hyesoo Yu <hyesoo.yu@samsung.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Hridya Valsaraju <hridya@google.com>
Change-Id: I8fb231e5a8360e2d8f65947e155b12aa664dde01
---
.../reserved-memory/dma_heap_chunk.yaml | 58 +++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reserved-memory/dma_heap_chunk.yaml
diff --git a/Documentation/devicetree/bindings/reserved-memory/dma_heap_chunk.yaml b/Documentation/devicetree/bindings/reserved-memory/dma_heap_chunk.yaml
new file mode 100644
index 000000000000..3e7fed5fb006
--- /dev/null
+++ b/Documentation/devicetree/bindings/reserved-memory/dma_heap_chunk.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reserved-memory/dma_heap_chunk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Device tree binding for chunk heap on DMA HEAP FRAMEWORK
+
+description: |
+ The DMA chunk heap is backed by the Contiguous Memory Allocator (CMA) and
+ supports bulk allocation of fixed size pages.
+
+maintainers:
+ - Hyesoo Yu <hyesoo.yu@samsung.com>
+ - John Stultz <john.stultz@linaro.org>
+ - Minchan Kim <minchan@kernel.org>
+ - Hridya Valsaraju<hridya@google.com>
+
+
+properties:
+ compatible:
+ enum:
+ - dma_heap,chunk
+
+ chunk-order:
+ description: |
+ order of pages that will get allocated from the chunk DMA heap.
+ maxItems: 1
+
+ size:
+ maxItems: 1
+
+ alignment:
+ maxItems: 1
+
+required:
+ - compatible
+ - size
+ - alignment
+ - chunk-order
+
+additionalProperties: false
+
+examples:
+ - |
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ chunk_memory: chunk_memory {
+ compatible = "dma_heap,chunk";
+ size = <0x3000000>;
+ alignment = <0x0 0x00010000>;
+ chunk-order = <4>;
+ };
+ };
+
+
--
2.30.0.284.gd98b1dd5eaa7-goog
next prev parent reply other threads:[~2021-01-13 1:23 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-13 1:21 [PATCH v3 0/4] Chunk Heap Support on DMA-HEAP Minchan Kim
2021-01-13 1:21 ` [PATCH v3 1/4] mm: cma: introduce gfp flag in cma_alloc instead of no_warn Minchan Kim
2021-01-20 21:08 ` Suren Baghdasaryan
2021-01-13 1:21 ` [PATCH v3 2/4] mm: failfast mode with __GFP_NORETRY in alloc_contig_range Minchan Kim
2021-01-13 8:39 ` David Hildenbrand
2021-01-14 18:04 ` Minchan Kim
2021-01-13 1:21 ` Minchan Kim [this message]
2021-01-13 15:45 ` [PATCH v3 3/4] dt-bindings: reserved-memory: Make DMA-BUF CMA heap DT-configurable Rob Herring
2021-01-13 17:30 ` Hridya Valsaraju
2021-01-14 14:01 ` Rob Herring
2021-01-14 19:49 ` Hridya Valsaraju
2021-01-13 1:21 ` [PATCH v3 4/4] dma-buf: heaps: add chunk heap to dmabuf heaps Minchan Kim
2021-01-13 3:38 ` Randy Dunlap
2021-01-14 1:04 ` Minchan Kim
2021-01-19 15:51 ` Minchan Kim
2021-01-19 18:29 ` John Stultz
2021-01-19 20:36 ` Minchan Kim
2021-01-20 3:32 ` Hyesoo Yu
2021-01-20 20:53 ` Suren Baghdasaryan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210113012143.1201105-4-minchan@kernel.org \
--to=minchan@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=david@redhat.com \
--cc=devicetree@vger.kernel.org \
--cc=hch@infradead.org \
--cc=hridya@google.com \
--cc=hyesoo.yu@samsung.com \
--cc=joaodias@google.com \
--cc=john.stultz@linaro.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.com \
--cc=pullip.cho@samsung.com \
--cc=robh+dt@kernel.org \
--cc=sumit.semwal@linaro.org \
--cc=surenb@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).