dt-bindings: memory: tegra: Update validation for reg and reg-names

From Tegra186 onwards, memory controller support multiple channels.
"reg" items are updated with address and size of these channels.
Tegra186 has overall 5 memory controller channels. Tegra194 and Tegra234
have overall 17 memory controller channels each.

There is one "reg" entry for memory controller stream-ID registers. So
update the "reg" property's "minItems" and "maxItems" accordingly in the
Tegra186 devicetree documentation.

Also update validation for "reg-names" added for these corresponding
"reg" items. ABI change due to new bindings is intended but backward
compatibility is preserved in driver.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml
index 13c4c82fd0d3b3e777d48fe52240a23452cf3c8b..c7cfa6c2cd81ca7777d616d8aa7b7b36090a5d92 100644 (file)
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml
@@ -34,8 +34,12 @@ properties:
           - nvidia,tegra234-mc
 
   reg:
-    minItems: 1
-    maxItems: 3
+    minItems: 6
+    maxItems: 18
+
+  reg-names:
+    minItems: 6
+    maxItems: 18
 
   interrupts:
     items:
@@ -142,7 +146,18 @@ allOf:
     then:
       properties:
         reg:
-          maxItems: 1
+          maxItems: 6
+          description: 5 memory controller channels and 1 for stream-id registers
+
+        reg-names:
+          maxItems: 6
+          items:
+            - const: sid
+            - const: broadcast
+            - const: ch0
+            - const: ch1
+            - const: ch2
+            - const: ch3
 
   - if:
       properties:
@@ -151,7 +166,30 @@ allOf:
     then:
       properties:
         reg:
-          minItems: 3
+          minItems: 18
+          description: 17 memory controller channels and 1 for stream-id registers
+
+        reg-names:
+          minItems: 18
+          items:
+            - const: sid
+            - const: broadcast
+            - const: ch0
+            - const: ch1
+            - const: ch2
+            - const: ch3
+            - const: ch4
+            - const: ch5
+            - const: ch6
+            - const: ch7
+            - const: ch8
+            - const: ch9
+            - const: ch10
+            - const: ch11
+            - const: ch12
+            - const: ch13
+            - const: ch14
+            - const: ch15
 
   - if:
       properties:
@@ -160,13 +198,37 @@ allOf:
     then:
       properties:
         reg:
-          minItems: 3
+          minItems: 18
+          description: 17 memory controller channels and 1 for stream-id registers
+
+        reg-names:
+          minItems: 18
+          items:
+            - const: sid
+            - const: broadcast
+            - const: ch0
+            - const: ch1
+            - const: ch2
+            - const: ch3
+            - const: ch4
+            - const: ch5
+            - const: ch6
+            - const: ch7
+            - const: ch8
+            - const: ch9
+            - const: ch10
+            - const: ch11
+            - const: ch12
+            - const: ch13
+            - const: ch14
+            - const: ch15
 
 additionalProperties: false
 
 required:
   - compatible
   - reg
+  - reg-names
   - interrupts
   - "#address-cells"
   - "#size-cells"
@@ -182,7 +244,13 @@ examples:
 
         memory-controller@2c00000 {
             compatible = "nvidia,tegra186-mc";
-            reg = <0x0 0x02c00000 0x0 0xb0000>;
+            reg = <0x0 0x02c00000 0x0 0x10000>,    /* MC-SID */
+                  <0x0 0x02c10000 0x0 0x10000>,    /* Broadcast channel */
+                  <0x0 0x02c20000 0x0 0x10000>,    /* MC0 */
+                  <0x0 0x02c30000 0x0 0x10000>,    /* MC1 */
+                  <0x0 0x02c40000 0x0 0x10000>,    /* MC2 */
+                  <0x0 0x02c50000 0x0 0x10000>;    /* MC3 */
+            reg-names = "sid", "broadcast", "ch0", "ch1", "ch2", "ch3";
             interrupts = <GIC_SPI 223 IRQ_TYPE_LEVEL_HIGH>;
 
             #address-cells = <2>;