dt-bindings: memory: tegra210: Mark EMC as cooling device

The external memory controller found on Tegra210 can use throttling of
the EMC frequency in order to reduce the memory chip temperature. Mark
the memory controller as a cooling device to take advantage of this
functionality.

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

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
index 4e4fb4acd7f9d376379a19b5f8e0256baaed5697..7a653a011f03f408a301c66ec62af6b3367a5f30 100644 (file)
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
@@ -52,6 +52,9 @@ properties:
       Should contain freqs and voltages and opp-supported-hw property, which
       is a bitfield indicating SoC speedo ID mask.
 
+allOf:
+  - $ref: /schemas/thermal/thermal-cooling-devices.yaml
+
 required:
   - compatible
   - reg
@@ -59,7 +62,7 @@ required:
   - clock-names
   - nvidia,memory-controller
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |
@@ -90,4 +93,5 @@ examples:
         operating-points-v2 = <&dvfs_opp_table>;
 
         #interconnect-cells = <0>;
+        #cooling-cells = <2>;
     };