60 lines
1.5 KiB
YAML
60 lines
1.5 KiB
YAML
# 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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$id: http://devicetree.org/schemas/spi/rockchip-flexbus-fspi.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Rockchip Flexbus controller under SPI transmission protocol
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maintainers:
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- Jon Lin <jon.lin@rock-chips.com>
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allOf:
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- $ref: spi-controller.yaml#
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properties:
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compatible:
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const: rockchip,flexbus-fspi
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description:
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The rockchip flexbus controller is a standalone IP with version register,
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and the driver can handle all the feature difference inside the IP
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depending on the version register.
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patternProperties:
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"^flash@[0-3]$":
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type: object
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properties:
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reg:
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minimum: 0
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maximum: 3
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required:
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- compatible
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Optional properties:
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- fspi-cs-gpios: specifies the gpio pins to be used for chipselects.
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The gpios will be referred to as reg = <index> in the SPI child nodes.
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If unspecified, a single SPI device without a chip select can be used.
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- reset-gpios: specifies the reset gpio pin to be used for resetting the devices.
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unevaluatedProperties: false
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examples:
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- |
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fspi: spi@ff3a0000 {
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compatible = "rockchip,flexbus-fspi";
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fspi-cs-gpios = <&gpio4 RK_PB0 GPIO_ACTIVE_LOW>, <&gpio4 RK_PA5 GPIO_ACTIVE_LOW>;
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#address-cells = <1>;
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#size-cells = <0>;
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flash@0 {
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compatible = "jedec,spi-nor";
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reg = <0>;
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spi-max-frequency = <108000000>;
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spi-rx-bus-width = <1>;
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spi-tx-bus-width = <4>;
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};
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};
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...
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