linux-kernel - [PATCH v6 05/16] dt-bindings: media: mediatek: mdp3: add support MT8195 RDMA

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Message-ID: <20230922072116.11009-6-moudy.ho@mediatek.com>
Date:   Fri, 22 Sep 2023 15:21:05 +0800
From:   Moudy Ho <moudy.ho@...iatek.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
CC:     <dri-devel@...ts.freedesktop.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        "Moudy Ho" <moudy.ho@...iatek.com>
Subject: [PATCH v6 05/16] dt-bindings: media: mediatek: mdp3: add support MT8195 RDMA

Support for MT8195 RDMA has been added, allowing for
the configuration of multiple MDP3 pipes.
Furthermore, this particular device does not require
sharing SRAM with RSZ.

Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
---
 .../media/mediatek,mdp3-rdma-8195.yaml        | 64 +++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,mdp3-rdma-8195.yaml

diff --git a/Documentation/devicetree/bindings/media/mediatek,mdp3-rdma-8195.yaml b/Documentation/devicetree/bindings/media/mediatek,mdp3-rdma-8195.yaml
new file mode 100644
index 000000000000..f10139aec3c5
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek,mdp3-rdma-8195.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/mediatek,mdp3-rdma-8195.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT8195 Read Direct Memory Access
+
+maintainers:
+  - Matthias Brugger <matthias.bgg@...il.com>
+  - Moudy Ho <moudy.ho@...iatek.com>
+
+description: |
+  MediaTek Read Direct Memory Access(RDMA) component used to do read DMA.
+  This type of component is configured when there are multiple MDP3 pipelines
+  that belong to different MMSYS subsystems.
+  It contains one line buffer to store the sufficient pixel data, and
+  must be siblings to the central MMSYS_CONFIG node.
+  For a description of the MMSYS_CONFIG binding, see
+  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
+  for details.
+
+allOf:
+  - $ref: mediatek,mdp3-rdma-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: mediatek,mt8195-mdp3-rdma
+
+  clocks:
+    maxItems: 1
+
+  mboxes:
+    maxItems: 5
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8195-clk.h>
+    #include <dt-bindings/gce/mt8195-gce.h>
+    #include <dt-bindings/power/mt8195-power.h>
+    #include <dt-bindings/memory/mt8195-memory-port.h>
+
+    dma-controller@...01000 {
+        compatible = "mediatek,mt8195-mdp3-rdma";
+        reg = <0x14001000 0x1000>;
+        mediatek,gce-client-reg = <&gce1 SUBSYS_1400XXXX 0x1000 0x1000>;
+        mediatek,gce-events = <CMDQ_EVENT_VPP0_MDP_RDMA_SOF>,
+                              <CMDQ_EVENT_VPP0_MDP_RDMA_FRAME_DONE>;
+        power-domains = <&spm MT8195_POWER_DOMAIN_VPPSYS0>;
+        iommus = <&iommu_vpp M4U_PORT_L4_MDP_RDMA>;
+        clocks = <&vppsys0 CLK_VPP0_MDP_RDMA>;
+        mboxes = <&gce1 12 CMDQ_THR_PRIO_1>,
+                 <&gce1 13 CMDQ_THR_PRIO_1>,
+                 <&gce1 14 CMDQ_THR_PRIO_1>,
+                 <&gce1 21 CMDQ_THR_PRIO_1>,
+                 <&gce1 22 CMDQ_THR_PRIO_1>;
+        #dma-cells = <1>;
+    };
-- 
2.18.0