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82 lines
1.9 KiB
82 lines
1.9 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra210-emc.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: NVIDIA Tegra210 SoC External Memory Controller |
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maintainers: |
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- Thierry Reding <[email protected]> |
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- Jon Hunter <[email protected]> |
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description: | |
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The EMC interfaces with the off-chip SDRAM to service the request stream |
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sent from the memory controller. |
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properties: |
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compatible: |
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const: nvidia,tegra210-emc |
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reg: |
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maxItems: 3 |
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clocks: |
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items: |
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- description: external memory clock |
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clock-names: |
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items: |
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- const: emc |
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interrupts: |
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items: |
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- description: EMC general interrupt |
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memory-region: |
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$ref: /schemas/types.yaml#/definitions/phandle |
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description: |
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phandle to a reserved memory region describing the table of EMC |
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frequencies trained by the firmware |
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nvidia,memory-controller: |
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$ref: /schemas/types.yaml#/definitions/phandle |
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description: |
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phandle of the memory controller node |
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required: |
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- compatible |
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- reg |
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- clocks |
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- clock-names |
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- nvidia,memory-controller |
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additionalProperties: false |
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examples: |
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- | |
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#include <dt-bindings/clock/tegra210-car.h> |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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reserved-memory { |
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#address-cells = <1>; |
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#size-cells = <1>; |
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ranges; |
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emc_table: emc-table@83400000 { |
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compatible = "nvidia,tegra210-emc-table"; |
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reg = <0x83400000 0x10000>; |
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}; |
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}; |
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external-memory-controller@7001b000 { |
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compatible = "nvidia,tegra210-emc"; |
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reg = <0x7001b000 0x1000>, |
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<0x7001e000 0x1000>, |
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<0x7001f000 0x1000>; |
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clocks = <&tegra_car TEGRA210_CLK_EMC>; |
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clock-names = "emc"; |
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interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>; |
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memory-region = <&emc_table>; |
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nvidia,memory-controller = <&mc>; |
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};
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