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Message-ID: <20250430094545.23932-2-friday.yang@mediatek.com>
Date: Wed, 30 Apr 2025 17:45:30 +0800
From: Friday Yang <friday.yang@...iatek.com>
To: Yong Wu <yong.wu@...iatek.com>, Krzysztof Kozlowski <krzk@...nel.org>,
"Rob Herring" <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
"Matthias Brugger" <matthias.bgg@...il.com>, AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>, Philipp Zabel
<p.zabel@...gutronix.de>
CC: Friday Yang <friday.yang@...iatek.com>,
<linux-mediatek@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v7 1/2] dt-bindings: memory: mediatek: Add SMI reset and clamp for MT8188
From: "Friday Yang" <friday.yang@...iatek.com>
Add 'resets' and 'reset-names' properties for SMI LARBs to support
SMI reset operations.
On the MediaTek platform, some SMI LARBs are directly connected to
the SMI Common, while others are connected to the SMI Sub-Common,
which in turn is connected to the SMI Common. The hardware block
diagram can be described as follows.
SMI-Common(Smart Multimedia Interface Common)
|
+----------------+------------------+
| | |
| | |
| | |
| | |
| | |
larb0 SMI-Sub-Common0 SMI-Sub-Common1
| | | | |
larb1 larb2 larb3 larb7 larb9
Signed-off-by: Friday Yang <friday.yang@...iatek.com>
Tested-by: Friday Yang <friday.yang@...iatek.com>
Reviewed-by: Yong Wu <yong.wu@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Acked-by: Rob Herring <robh@...nel.org>
---
.../mediatek,smi-common.yaml | 2 ++
.../memory-controllers/mediatek,smi-larb.yaml | 19 +++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml
index 0762e0ff66ef..3d98c08b2149 100644
--- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml
@@ -40,6 +40,7 @@ properties:
- mediatek,mt8186-smi-common
- mediatek,mt8188-smi-common-vdo
- mediatek,mt8188-smi-common-vpp
+ - mediatek,mt8188-smi-sub-common
- mediatek,mt8192-smi-common
- mediatek,mt8195-smi-common-vdo
- mediatek,mt8195-smi-common-vpp
@@ -108,6 +109,7 @@ allOf:
compatible:
contains:
enum:
+ - mediatek,mt8188-smi-sub-common
- mediatek,mt8195-smi-sub-common
then:
required:
diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml
index 2e7fac4b5094..fc5feb2eac1f 100644
--- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml
@@ -70,6 +70,12 @@ properties:
description: the hardware id of this larb. It's only required when this
hardware id is not consecutive from its M4U point of view.
+ resets:
+ maxItems: 1
+
+ reset-names:
+ const: larb
+
required:
- compatible
- reg
@@ -126,6 +132,19 @@ allOf:
required:
- mediatek,larb-id
+ - if: # only for image, camera and ipe subsys
+ properties:
+ compatible:
+ const: mediatek,mt8188-smi-larb
+ mediatek,larb-id:
+ enum:
+ [ 9, 10, 11, 12, 13, 16, 17, 18, 19, 20 ]
+
+ then:
+ required:
+ - resets
+ - reset-names
+
additionalProperties: false
examples:
--
2.46.0
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