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117 lines
2.7 KiB
117 lines
2.7 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/spi/nvidia,tegra210-quad.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Tegra Quad SPI Controller |
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maintainers: |
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- Thierry Reding <[email protected]> |
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- Jonathan Hunter <[email protected]> |
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allOf: |
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- $ref: "spi-controller.yaml#" |
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properties: |
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compatible: |
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enum: |
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- nvidia,tegra210-qspi |
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- nvidia,tegra186-qspi |
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- nvidia,tegra194-qspi |
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reg: |
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maxItems: 1 |
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interrupts: |
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maxItems: 1 |
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clock-names: |
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items: |
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- const: qspi |
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- const: qspi_out |
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clocks: |
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maxItems: 2 |
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resets: |
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maxItems: 1 |
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dmas: |
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maxItems: 2 |
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dma-names: |
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items: |
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- const: rx |
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- const: tx |
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patternProperties: |
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"@[0-9a-f]+": |
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type: object |
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properties: |
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spi-rx-bus-width: |
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enum: [1, 2, 4] |
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spi-tx-bus-width: |
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enum: [1, 2, 4] |
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nvidia,tx-clk-tap-delay: |
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description: |
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Delays the clock going out to device with this tap value. |
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Tap value varies based on platform design trace lengths from Tegra |
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QSPI to corresponding slave device. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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minimum: 0 |
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maximum: 31 |
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nvidia,rx-clk-tap-delay: |
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description: |
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Delays the clock coming in from the device with this tap value. |
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Tap value varies based on platform design trace lengths from Tegra |
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QSPI to corresponding slave device. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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minimum: 0 |
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maximum: 255 |
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required: |
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- reg |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- clock-names |
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- clocks |
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- resets |
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unevaluatedProperties: 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/reset/tegra210-car.h> |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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spi@70410000 { |
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compatible = "nvidia,tegra210-qspi"; |
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reg = <0x70410000 0x1000>; |
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interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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clocks = <&tegra_car TEGRA210_CLK_QSPI>, |
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<&tegra_car TEGRA210_CLK_QSPI_PM>; |
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clock-names = "qspi", "qspi_out"; |
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resets = <&tegra_car 211>; |
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dmas = <&apbdma 5>, <&apbdma 5>; |
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dma-names = "rx", "tx"; |
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flash@0 { |
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compatible = "spi-nor"; |
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reg = <0>; |
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spi-max-frequency = <104000000>; |
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spi-tx-bus-width = <2>; |
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spi-rx-bus-width = <2>; |
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nvidia,tx-clk-tap-delay = <0>; |
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nvidia,rx-clk-tap-delay = <0>; |
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}; |
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};
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