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author | Dmitry Osipenko <digetx@gmail.com> | 2020-11-04 19:48:50 +0300 |
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committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-11-06 21:37:19 +0300 |
commit | 881f68ed9d4e2d9f6e4247f2f01d9c457921e6c6 (patch) | |
tree | 6c32f12d7ba4d93a859ba03a6f7858551f3b38af /Documentation/devicetree/bindings/memory-controllers | |
parent | cf3b2deb459df1d1f3cdbd4d24b35e9f3506d92f (diff) | |
download | linux-881f68ed9d4e2d9f6e4247f2f01d9c457921e6c6.tar.xz |
dt-bindings: memory: tegra124: emc: Document OPP table and voltage regulator
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.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201104164923.21238-15-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/memory-controllers')
-rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml | 12 |
1 files changed, 12 insertions, 0 deletions
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>; |