[PATCH 1/4] dt-bindings: mtd: qcom,nandc: Add MDM9607 QPIC NAND controller

[Stephan Gerhold]

Add the qcom,mdm9607-nand compatible for the QPIC NAND controller used
inside the MDM9607 SoC.

On MDM9607, there is only a single controllable clock for the NAND
controller (RPM_SMD_QPIC_CLK). The same situation also applies e.g. for
qcom,sdx55-nand, but the corresponding device tree (qcom-sdx55.dtsi) works
around that by assigning a dummy clock (&nand_clk_dummy) to the second
clock ("aon") that is required by the dt-bindings. This is not really
useful, so avoid doing that for new platforms by excluding the second "aon"
clock entry in the dt-bindings.

Signed-off-by: Stephan Gerhold <stephan.gerhold at linaro.org>
---
 .../devicetree/bindings/mtd/qcom,nandc.yaml        | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml b/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml
index 5511389960f0..4a9ba32cbddd 100644
--- a/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml
+++ b/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml
@@ -22,17 +22,20 @@ properties:
               - qcom,ipq4019-nand
               - qcom,ipq6018-nand
               - qcom,ipq8074-nand
+              - qcom,mdm9607-nand
               - qcom,sdx55-nand
 
   reg:
     maxItems: 1
 
   clocks:
+    minItems: 1
     items:
       - description: Core Clock
       - description: Always ON Clock
 
   clock-names:
+    minItems: 1
     items:
       - const: core
       - const: aon
@@ -101,6 +104,26 @@ allOf:
           items:
             - const: rxtx
 
+  # MDM9607 has no (separately controllable) "aon" clock, only "core"
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,mdm9607-nand
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+    else:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+
   - if:
       properties:
         compatible:
@@ -121,6 +144,7 @@ allOf:
               - qcom,ipq4019-nand
               - qcom,ipq6018-nand
               - qcom,ipq8074-nand
+              - qcom,mdm9607-nand
               - qcom,sdx55-nand
 
     then:

-- 
2.54.0