[PATCH 5/5] dt-bindings: memory: tegra210: Mark EMC as cooling device

[Thierry Reding <thierry.reding@gmail.com>]

From: Thierry Reding <treding@nvidia.com>

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.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../bindings/memory-controllers/nvidia,tegra210-emc.yaml  | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
index bc8477e7ab19..95c14deb8941 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
@@ -44,6 +44,11 @@ properties:
     description:
       phandle of the memory controller node
 
+allOf:
+  - $ref: ../thermal/thermal-cooling-devices.yaml
+
+unevaluatedProperties: false
+
 required:
   - compatible
   - reg
@@ -51,8 +56,6 @@ required:
   - clock-names
   - nvidia,memory-controller
 
-additionalProperties: false
-
 examples:
   - |
     #include <dt-bindings/clock/tegra210-car.h>
@@ -79,4 +82,5 @@ examples:
         interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
         memory-region = <&emc_table>;
         nvidia,memory-controller = <&mc>;
+        #cooling-cells = <2>;
     };
-- 
2.34.1