From: Yong Wu <yong.wu@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
<christian.koenig@amd.com>,
Sumit Semwal <sumit.semwal@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Benjamin Gaignard <benjamin.gaignard@collabora.com>,
Brian Starkey <Brian.Starkey@arm.com>,
John Stultz <jstultz@google.com>, <tjmercier@google.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Yong Wu <yong.wu@mediatek.com>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>,
<dri-devel@lists.freedesktop.org>,
<linaro-mm-sig@lists.linaro.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
Robin Murphy <robin.murphy@arm.com>,
Vijayanand Jitta <quic_vjitta@quicinc.com>,
Joakim Bech <joakim.bech@linaro.org>,
Jeffrey Kardatzke <jkardatzke@google.com>,
"Pavel Machek" <pavel@ucw.cz>, Simon Ser <contact@emersion.fr>,
Pekka Paalanen <ppaalanen@gmail.com>, <willy@infradead.org>,
Logan Gunthorpe <logang@deltatee.com>,
Daniel Vetter <daniel@ffwll.ch>, <jianjiao.zeng@mediatek.com>,
<kuohong.wang@mediatek.com>, <youlin.pei@mediatek.com>
Subject: [PATCH v5 1/9] dt-bindings: reserved-memory: Add mediatek,dynamic-restricted-region
Date: Wed, 15 May 2024 19:23:00 +0800 [thread overview]
Message-ID: <20240515112308.10171-2-yong.wu@mediatek.com> (raw)
In-Reply-To: <20240515112308.10171-1-yong.wu@mediatek.com>
Add a binding for describing the dynamic restricted reserved memory range.
The memory range also will be defined in the TEE firmware. It means the TEE
will be configured with the same address/size that is being set in this
DT node. Regarding to the detail TEE command, Please search
MTK_TZCMD_SECMEM_ZALLOC and MTK_TZCMD_SECMEM_FREE.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
.../mediatek,dynamic-restricted-region.yaml | 43 +++++++++++++++++++
1 file changed, 43 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reserved-memory/mediatek,dynamic-restricted-region.yaml
diff --git a/Documentation/devicetree/bindings/reserved-memory/mediatek,dynamic-restricted-region.yaml b/Documentation/devicetree/bindings/reserved-memory/mediatek,dynamic-restricted-region.yaml
new file mode 100644
index 000000000000..5cbe3a5637fa
--- /dev/null
+++ b/Documentation/devicetree/bindings/reserved-memory/mediatek,dynamic-restricted-region.yaml
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reserved-memory/mediatek,dynamic-restricted-region.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Dynamic Reserved Region
+
+description:
+ A memory region that can dynamically transition as a whole between
+ secure and non-secure states. This memory will be protected by OP-TEE
+ when allocations are active and unprotected otherwise.
+
+maintainers:
+ - Yong Wu <yong.wu@mediatek.com>
+
+allOf:
+ - $ref: reserved-memory.yaml
+
+properties:
+ compatible:
+ const: mediatek,dynamic-restricted-region
+
+required:
+ - compatible
+ - reg
+ - reusable
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ reserved-memory@80000000 {
+ compatible = "mediatek,dynamic-restricted-region";
+ reg = <0x80000000 0x18000000>;
+ reusable;
+ };
+ };
--
2.25.1
next prev parent reply other threads:[~2024-05-15 11:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-15 11:22 [PATCH v5 0/9] dma-buf: heaps: Add restricted heap Yong Wu
2024-05-15 11:23 ` Yong Wu [this message]
2024-05-15 11:23 ` [PATCH v5 2/9] scatterlist: Add a flag for the restricted memory Yong Wu
2024-05-16 8:17 ` Christian König
2024-05-20 7:58 ` Yong Wu (吴勇)
2024-05-21 18:36 ` Christian König
2024-05-16 9:59 ` AngeloGioacchino Del Regno
2024-05-20 9:53 ` Yong Wu (吴勇)
2024-05-15 11:23 ` [PATCH v5 3/9] lib/scatterlist: Add sg_dup_table Yong Wu
2024-05-15 11:23 ` [PATCH v5 4/9] dma-buf: heaps: Initialize a restricted heap Yong Wu
2024-05-15 11:23 ` [PATCH v5 5/9] dma-buf: heaps: restricted_heap: Add private heap ops Yong Wu
2024-05-15 11:23 ` [PATCH v5 6/9] dma-buf: heaps: restricted_heap: Add dma_ops Yong Wu
2024-05-15 11:23 ` [PATCH v5 7/9] dma-buf: heaps: restricted_heap: Add MediaTek restricted heap and heap_init Yong Wu
2024-05-15 11:23 ` [PATCH v5 8/9] dma-buf: heaps: restricted_heap_mtk: Add TEE memory service call Yong Wu
2024-05-15 11:23 ` [PATCH v5 9/9] dma_buf: heaps: restricted_heap_mtk: Add a new CMA heap Yong Wu
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