linux-kernel - [PATCH 01/11] dt-bindings: iommu: qcom,iommu: Add optional TBU clock

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Message-Id: <20250306-topic-dt_bindings_fixups-v1-1-0c84aceb0ef9@oss.qualcomm.com>
Date: Thu, 06 Mar 2025 19:11:13 +0100
From: Konrad Dybcio <konradybcio@...nel.org>
To: Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>, 
 Robin Murphy <robin.murphy@....com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
 Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 Robert Foss <rfoss@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Wesley Cheng <quic_wcheng@...cinc.com>, 
 Christian Marangi <ansuelsmth@...il.com>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Rohit Agarwal <quic_rohiagar@...cinc.com>, 
 Kyle Deng <quic_chunkaid@...cinc.com>, Vinod Koul <vkoul@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, iommu@...ts.linux.dev, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 linux-usb@...r.kernel.org, Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH 01/11] dt-bindings: iommu: qcom,iommu: Add optional TBU
 clock

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

Some MMU instances feature a Translation Buffer Unit (TBU), which comes
with its own clock. Allow describing it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 Documentation/devicetree/bindings/iommu/qcom,iommu.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iommu/qcom,iommu.yaml b/Documentation/devicetree/bindings/iommu/qcom,iommu.yaml
index 5ae9a628261fd251c1e991a70662c6d37ef2c4e3..09879bc8ad8d04b73dd22f7f64b2d1de60409941 100644
--- a/Documentation/devicetree/bindings/iommu/qcom,iommu.yaml
+++ b/Documentation/devicetree/bindings/iommu/qcom,iommu.yaml
@@ -31,14 +31,18 @@ properties:
           - const: qcom,msm-iommu-v2
 
   clocks:
+    minItems: 2
     items:
       - description: Clock required for IOMMU register group access
       - description: Clock required for underlying bus access
+      - description: Clock required for the MMU Translation Buffer Unit
 
   clock-names:
+    minItems: 2
     items:
       - const: iface
       - const: bus
+      - const: tbu
 
   power-domains:
     maxItems: 1

-- 
2.48.1