linux-kernel - [PATCH v1 1/2] dt-bindings: qspi: cdns,qspi-nor: constrain minItems/maxItems of resets

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Message-ID: <20230302105221.197421-2-william.qiu@starfivetech.com>
Date:   Thu, 2 Mar 2023 18:52:20 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     <devicetree@...r.kernel.org>, <linux-spi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mark Brown <broonie@...nel.org>,
        William Qiu <william.qiu@...rfivetech.com>,
        Ziv Xu <ziv.xu@...rfivetech.com>
Subject: [PATCH v1 1/2] dt-bindings: qspi: cdns,qspi-nor: constrain minItems/maxItems of resets

The QSPI controller needs three reset items to work properly on JH7110 SoC,
so there is need to change the maxItems's value to 3 and add minItems
whose value is equal to 2. Other platforms do not have this constraint.

Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
---
 .../bindings/spi/cdns,qspi-nor.yaml           | 37 +++++++++++++++++--
 1 file changed, 33 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
index 4707294d8f59..14821cb6db48 100644
--- a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
+++ b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
@@ -19,6 +19,33 @@ allOf:
     then:
       required:
         - power-domains
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: starfive,jh7110-qspi
+    then:
+      properties:
+        resets:
+          minItems: 2
+          maxItems: 3
+
+        reset-names:
+          minItems: 2
+          maxItems: 3
+          items:
+            enum: [ qspi, qspi-ocp, rstc_ref ]
+
+    else:
+      properties:
+        resets:
+          maxItems: 2
+
+        reset-names:
+          minItems: 1
+          maxItems: 2
+          items:
+            enum: [ qspi, qspi-ocp ]
 
 properties:
   compatible:
@@ -30,6 +57,7 @@ properties:
               - intel,lgm-qspi
               - xlnx,versal-ospi-1.0
               - intel,socfpga-qspi
+              - starfive,jh7110-qspi
           - const: cdns,qspi-nor
       - const: cdns,qspi-nor
 
@@ -79,13 +107,14 @@ properties:
     maxItems: 1
 
   resets:
-    maxItems: 2
+    minItems: 2
+    maxItems: 3
 
   reset-names:
-    minItems: 1
-    maxItems: 2
+    minItems: 2
+    maxItems: 3
     items:
-      enum: [ qspi, qspi-ocp ]
+      enum: [ qspi, qspi-ocp, rstc_ref ]
 
 required:
   - compatible
-- 
2.34.1