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[v7,14/47] dt-bindings: memory: tegra124: emc: Document OPP table and voltage regulator

Message ID 20201104164923.21238-15-digetx@gmail.com
State Accepted
Commit 881f68ed9d4e2d9f6e4247f2f01d9c457921e6c6
Headers show
Series Introduce memory interconnect for NVIDIA Tegra SoCs | expand

Commit Message

Dmitry Osipenko Nov. 4, 2020, 4:48 p.m. UTC 
Document new OPP table and voltage regulator properties which are needed
for supporting dynamic voltage-frequency scaling of the memory controller.
Some boards may have a fixed core voltage regulator, hence it's optional
because frequency scaling still may be desired.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../memory-controllers/nvidia,tegra124-emc.yaml      | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml
index ac00832ceac1..09bde65e1955 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml
@@ -37,6 +37,15 @@  properties:
     description:
       phandle of the memory controller node
 
+  core-supply:
+    description:
+      Phandle of voltage regulator of the SoC "core" power domain.
+
+  operating-points-v2:
+    description:
+      Should contain freqs and voltages and opp-supported-hw property, which
+      is a bitfield indicating SoC speedo ID mask.
+
 patternProperties:
   "^emc-timings-[0-9]+$":
     type: object
@@ -331,6 +340,7 @@  required:
   - clock-names
   - nvidia,memory-controller
   - "#interconnect-cells"
+  - operating-points-v2
 
 additionalProperties: false
 
@@ -359,6 +369,8 @@  examples:
         clock-names = "emc";
 
         nvidia,memory-controller = <&mc>;
+        operating-points-v2 = <&dvfs_opp_table>;
+        core-supply = <&vdd_core>;
 
         #interconnect-cells = <0>;