From: Thierry Reding <treding@xxxxxxxxxx>
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@xxxxxxxxxx>
---
.../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
