diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-mc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-mc.yaml new file mode 100644 index 000000000000..268d5ff958f9 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-mc.yaml @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra210-mc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVIDIA Tegra210 SoC Memory Controller + +maintainers: + - Thierry Reding + - Jon Hunter + +description: | + The NVIDIA Tegra210 SoC features a 64 bit memory controller that is split + into two 32 bit channels to support LPDDR3 and LPDDR4 with x16 subpartitions. + The MC handles memory requests for 34-bit virtual addresses from internal + clients and arbitrates among them to allocate memory bandwidth. + + Up to 8 GiB of physical memory can be supported. Security features such as + encryption of traffic to and from DRAM via general security apertures are + available for video and other secure applications. + +properties: + $nodename: + pattern: "^memory-controller@[0-9a-f]+$" + + compatible: + items: + - enum: + - nvidia,tegra210-mc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: module clock + + clock-names: + items: + - const: mc + + "#iommu-cells": + const: 1 + + "#reset-cells": + const: 1 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - "#iommu-cells" + - "#reset-cells" + +additionalProperties: false + +examples: + - | + #include + #include + + memory-controller@70019000 { + compatible = "nvidia,tegra210-mc"; + reg = <0x70019000 0x1000>; + interrupts = ; + clocks = <&tegra_car TEGRA210_CLK_MC>; + clock-names = "mc"; + + #iommu-cells = <1>; + #reset-cells = <1>; + };