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From: Frank Li <Frank.Li@nxp.com>
Date: Thu, 13 Jun 2024 10:32:05 -0400
Subject: [PATCH v5 1/3] dt-bindings: mmc: mmc-spi-slot: Change
 voltage-ranges to uint32-matrix
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To: Ulf Hansson <ulf.hansson@linaro.org>, Rob Herring <robh@kernel.org>, 
 Krzysztof Kozlowski <krzk+dt@kernel.org>, 
 Conor Dooley <conor+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>
Cc: linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, 
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According to common mmc core, voltages-ranges should be matrix.

Signed-off-by: Frank Li <Frank.Li@nxp.com>

---
Change from v4 to v5
- Change maxItems to 1

Not sure why it impact other mmc yaml's voltage-ranges.
Rob's answer:

It's a quirk of the tools. When decoding properties, the tools only know
all possible types. Types are global, not per binding. Sometimes it can
be figured out, but cases like this cannot be.
---
 Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml
index 36acc40c7d181..6e2cdac6a85da 100644
--- a/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml
+++ b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml
@@ -27,17 +27,19 @@ properties:
     maxItems: 1
 
   voltage-ranges:
-    $ref: /schemas/types.yaml#/definitions/uint32-array
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
     description: |
       Two cells are required, first cell specifies minimum slot voltage (mV),
       second cell specifies maximum slot voltage (mV).
     items:
-      - description: |
-          value for minimum slot voltage in mV
-        default: 3200
-      - description: |
-          value for maximum slot voltage in mV
-        default: 3400
+      items:
+        - description: |
+            value for minimum slot voltage in mV
+          default: 3200
+        - description: |
+            value for maximum slot voltage in mV
+          default: 3400
+    maxItems: 1
 
   gpios:
     description: |

-- 
2.34.1