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* [PATCH] dt-bindings: Consolidate "sram" property definition
@ 2026-05-11 16:59 Rob Herring (Arm)
  2026-05-11 18:55 ` Linus Walleij
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Rob Herring (Arm) @ 2026-05-11 16:59 UTC (permalink / raw)
  To: Liu Ying, Philipp Zabel, Maarten Lankhorst, Maxime Ripard,
	Thomas Zimmermann, David Airlie, Simona Vetter,
	Krzysztof Kozlowski, Conor Dooley, Frank Li, Sascha Hauer,
	Pengutronix Kernel Team, Fabio Estevam, Rob Clark, Sean Paul,
	Konrad Dybcio, Akhil P Oommen, Dmitry Baryshkov, Abhinav Kumar,
	Jessica Zhang, Marijn Suijten, Vinod Koul, Nas Chung, Jackson Lee,
	Mauro Carvalho Chehab, Mirela Rabulea, Detlev Casanova,
	Ezequiel Garcia, Heiko Stuebner, Hugues Fruchet, Alain Volmat,
	Maxime Coquelin, Alexandre Torgue, Andrew Lunn, David S. Miller,
	Eric Dumazet, Jakub Kicinski, Paolo Abeni, MD Danish Anwar,
	Roger Quadros, Parvathi Pudi, Mohan Reddy Putluru,
	Bjorn Andersson, Mathieu Poirier, Neil Armstrong, Kevin Hilman,
	Jerome Brunet, Martin Blumenstingl, Michal Simek, Mark Brown,
	Matthias Brugger, AngeloGioacchino Del Regno, Linus Walleij,
	Lorenzo Bianconi, Felix Fietkau, Andrew F. Davis, Hussain Khaja,
	Suman Anna, Ben Levinsky, Tanmay Shah, Erwan Leray,
	Fabrice Gasnier
  Cc: Roger Quadros, dri-devel, devicetree, imx, linux-arm-kernel,
	linux-kernel, linux-arm-msm, freedreno, dmaengine, linux-media,
	linux-rockchip, linux-stm32, netdev, linux-remoteproc,
	linux-amlogic, linux-spi, linux-mediatek

The "sram" property has become a de facto standard property, so create a
common schema for it and drop all the duplicated definitions.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../imx/fsl,imx8qxp-dc-command-sequencer.yaml |  2 +-
 .../devicetree/bindings/display/msm/gpu.yaml  |  6 +----
 .../bindings/dma/stericsson,dma40.yaml        |  8 ++----
 .../bindings/media/cnm,wave521c.yaml          |  2 +-
 .../bindings/media/nxp,imx8-jpeg.yaml         |  6 ++---
 .../bindings/media/rockchip,vdec.yaml         |  5 ++--
 .../bindings/media/st,stm32-dcmi.yaml         |  6 ++---
 .../devicetree/bindings/net/mediatek,net.yaml |  3 +--
 .../bindings/net/ti,icssg-prueth.yaml         |  2 +-
 .../bindings/net/ti,icssm-prueth.yaml         |  2 +-
 .../remoteproc/amlogic,meson-mx-ao-arc.yaml   |  7 +----
 .../bindings/remoteproc/ti,k3-dsp-rproc.yaml  |  8 ------
 .../bindings/remoteproc/ti,k3-r5f-rproc.yaml  |  8 ------
 .../remoteproc/xlnx,zynqmp-r5fss.yaml         |  9 +------
 .../devicetree/bindings/spi/st,stm32-spi.yaml | 10 +++----
 .../bindings/sram/sram-consumer.yaml          | 26 +++++++++++++++++++
 16 files changed, 48 insertions(+), 62 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sram/sram-consumer.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
index 27118f4c0d28..fd095e5742c5 100644
--- a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
@@ -41,7 +41,7 @@ properties:
       - const: sw3
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     description: phandle pointing to the mmio-sram device node
 
 required:
diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
index 04b2328903ca..358759fad8dc 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
@@ -84,13 +84,9 @@ properties:
     maxItems: 64
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle-array
     minItems: 1
     maxItems: 4
-    items:
-      maxItems: 1
-    description: |
-      phandles to one or more reserved on-chip SRAM regions.
+    description:
       phandle to the On Chip Memory (OCMEM) that's present on some a3xx and
       a4xx Snapdragon SoCs. See
       Documentation/devicetree/bindings/sram/qcom,ocmem.yaml
diff --git a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
index 607da11e7baa..d8f92838f4c9 100644
--- a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
+++ b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
@@ -136,13 +136,9 @@ properties:
     maxItems: 1
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle-array
-    description: A phandle array with inner size 1 (no arg cells).
-      First phandle is the LCPA (Logical Channel Parameter Address) memory.
-      Second phandle is the  LCLA (Logical Channel Link base Address) memory.
-    maxItems: 2
     items:
-      maxItems: 1
+      - description: LCPA (Logical Channel Parameter Address) memory.
+      - description: LCLA (Logical Channel Link base Address) memory.
 
   memcpy-channels:
     $ref: /schemas/types.yaml#/definitions/uint32-array
diff --git a/Documentation/devicetree/bindings/media/cnm,wave521c.yaml b/Documentation/devicetree/bindings/media/cnm,wave521c.yaml
index 6a11c1d11fb5..6cd33dfd095d 100644
--- a/Documentation/devicetree/bindings/media/cnm,wave521c.yaml
+++ b/Documentation/devicetree/bindings/media/cnm,wave521c.yaml
@@ -37,7 +37,7 @@ properties:
     maxItems: 1
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     description:
       The VPU uses the SRAM to store some of the reference data instead of
       storing it on DMA memory. It is mainly used for the purpose of reducing
diff --git a/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml b/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
index 18cc6315a821..6ba668aa633d 100644
--- a/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
+++ b/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
@@ -56,10 +56,10 @@ properties:
     maxItems: 5               # Wrapper and 4 slots
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     description:
-      Optional phandle to a reserved on-chip SRAM regions. The SRAM can
-      be used for descriptor storage, which may improve bus utilization.
+      The SRAM can be used for descriptor storage, which may improve bus
+      utilization.
 
 required:
   - compatible
diff --git a/Documentation/devicetree/bindings/media/rockchip,vdec.yaml b/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
index 42022401d0ff..4f38a0ef29d8 100644
--- a/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
+++ b/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
@@ -91,9 +91,8 @@ properties:
     maxItems: 1
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
-    description: |
-      phandle to a reserved on-chip SRAM regions.
+    maxItems: 1
+    description:
       Some SoCs, like rk3588 provide on-chip SRAM to store temporary
       buffers during decoding.
 
diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
index d9fbb90b0977..7c2ddd27780f 100644
--- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
+++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
@@ -47,10 +47,10 @@ properties:
     maxItems: 1
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     description:
-      phandle to a reserved SRAM region which is used as temporary
-      storage memory between DMA and MDMA engines.
+      SRAM region which is used as temporary storage memory between DMA and
+      MDMA engines.
 
   port:
     $ref: /schemas/graph.yaml#/$defs/port-base
diff --git a/Documentation/devicetree/bindings/net/mediatek,net.yaml b/Documentation/devicetree/bindings/net/mediatek,net.yaml
index cc346946291a..6bbd83c6aaf7 100644
--- a/Documentation/devicetree/bindings/net/mediatek,net.yaml
+++ b/Documentation/devicetree/bindings/net/mediatek,net.yaml
@@ -67,8 +67,7 @@ properties:
       - const: ppe
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
-    description: phandle to mmio SRAM
+    maxItems: 1
 
   mediatek,ethsys:
     $ref: /schemas/types.yaml#/definitions/phandle
diff --git a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
index c296e5711848..883033b19b8f 100644
--- a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
+++ b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
@@ -21,7 +21,7 @@ properties:
       - ti,am654-sr1-icssg-prueth  # for AM65x SoC family, SR1.0
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     description:
       phandle to MSMC SRAM node
 
diff --git a/Documentation/devicetree/bindings/net/ti,icssm-prueth.yaml b/Documentation/devicetree/bindings/net/ti,icssm-prueth.yaml
index a98ad45ca66f..9370c43bc66a 100644
--- a/Documentation/devicetree/bindings/net/ti,icssm-prueth.yaml
+++ b/Documentation/devicetree/bindings/net/ti,icssm-prueth.yaml
@@ -24,7 +24,7 @@ properties:
       - ti,am3359-prueth   # for AM33x SoC family
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     description:
       phandle to OCMC SRAM node
 
diff --git a/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml b/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml
index 76e8ca44906a..3f710433e937 100644
--- a/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml
@@ -48,12 +48,7 @@ properties:
     minItems: 1
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
-    description:
-      phandles to a reserved SRAM region which is used as the memory of
-      the ARC core. The region should be defined as child nodes of the
-      AHB SRAM node as per the generic bindings in
-      Documentation/devicetree/bindings/sram/sram.yaml
+    maxItems: 1
 
   amlogic,secbus2:
     $ref: /schemas/types.yaml#/definitions/phandle
diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml
index b51bb863d759..8b1ed384ef22 100644
--- a/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml
@@ -75,16 +75,8 @@ properties:
 # --------------------
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle-array
     minItems: 1
     maxItems: 4
-    items:
-      maxItems: 1
-    description: |
-      phandles to one or more reserved on-chip SRAM regions. The regions
-      should be defined as child nodes of the respective SRAM node, and
-      should be defined as per the generic bindings in,
-      Documentation/devicetree/bindings/sram/sram.yaml
 
 allOf:
   - if:
diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
index 775e9b3a1938..14e6b2f817b3 100644
--- a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
@@ -224,16 +224,8 @@ patternProperties:
           at 0x0) or 0 (BTCM at 0x0), default value is 1 if omitted.
 
       sram:
-        $ref: /schemas/types.yaml#/definitions/phandle-array
         minItems: 1
         maxItems: 4
-        items:
-          maxItems: 1
-        description: |
-          phandles to one or more reserved on-chip SRAM regions. The regions
-          should be defined as child nodes of the respective SRAM node, and
-          should be defined as per the generic bindings in,
-          Documentation/devicetree/bindings/sram/sram.yaml
 
     required:
       - compatible
diff --git a/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml b/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml
index ee63c03949c9..c7d5e58330d6 100644
--- a/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml
@@ -106,20 +106,13 @@ patternProperties:
           - const: rx
 
       sram:
-        $ref: /schemas/types.yaml#/definitions/phandle-array
         minItems: 1
         maxItems: 8
-        items:
-          maxItems: 1
-        description: |
+        description:
           phandles to one or more reserved on-chip SRAM regions. Other than TCM,
           the RPU can execute instructions and access data from the OCM memory,
           the main DDR memory, and other system memories.
 
-          The regions should be defined as child nodes of the respective SRAM
-          node, and should be defined as per the generic bindings in
-          Documentation/devicetree/bindings/sram/sram.yaml
-
       memory-region:
         description: |
           List of phandles to the reserved memory regions associated with the
diff --git a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
index 472e92974714..6d7d595e4ab3 100644
--- a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
+++ b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
@@ -89,12 +89,10 @@ properties:
       - const: rxm2m
 
   sram:
-    $ref: /schemas/types.yaml#/definitions/phandle
-    description: |
-      Phandles to a reserved SRAM region which is used as temporary
-      storage memory between DMA and MDMA engines.
-      The region should be defined as child node of the AHB SRAM node
-      as per the generic bindings in Documentation/devicetree/bindings/sram/sram.yaml
+    maxItems: 1
+    description:
+      SRAM region which is used as temporary storage memory between DMA and
+      MDMA engines.
 
   power-domains:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/sram/sram-consumer.yaml b/Documentation/devicetree/bindings/sram/sram-consumer.yaml
new file mode 100644
index 000000000000..f00087bd2879
--- /dev/null
+++ b/Documentation/devicetree/bindings/sram/sram-consumer.yaml
@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sram/sram-consumer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SRAM Consumers
+
+maintainers:
+  - Rob Herring <robh@kernel.org>
+
+select: true
+
+properties:
+  sram:
+    description:
+      Phandles to one or more reserved on-chip SRAM regions. The regions
+      should be defined as child nodes of the respective SRAM node, and
+      should be defined as per the generic bindings in,
+      Documentation/devicetree/bindings/sram/sram.yaml
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      maxItems: 1
+
+additionalProperties: true
+...
-- 
2.53.0


^ permalink raw reply related	[flat|nested] 4+ messages in thread
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Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-05-11 16:59 [PATCH] dt-bindings: Consolidate "sram" property definition Rob Herring (Arm)
2026-05-11 18:55 ` Linus Walleij
2026-05-11 23:09 ` Jakub Kicinski
2026-05-12  0:46 ` Mark Brown

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