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f516fb704d
Clean-up incorrect indentation, extra spaces, long lines, and missing EOF newline in schema files. Most of the clean-ups are for list indentation which should always be 2 spaces more than the preceding keyword. Found with yamllint (which I plan to integrate into the checks). Cc: linux-arm-kernel@lists.infradead.org Cc: linux-clk@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-spi@vger.kernel.org Cc: linux-gpio@vger.kernel.org Cc: linux-remoteproc@vger.kernel.org Cc: linux-hwmon@vger.kernel.org Cc: linux-i2c@vger.kernel.org Cc: linux-fbdev@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: linux-input@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: alsa-devel@alsa-project.org Cc: linux-mmc@vger.kernel.org Cc: linux-mtd@lists.infradead.org Cc: netdev@vger.kernel.org Cc: linux-rtc@vger.kernel.org Cc: linux-serial@vger.kernel.org Cc: linux-usb@vger.kernel.org Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Rob Herring <robh@kernel.org>
90 lines
2.8 KiB
YAML
90 lines
2.8 KiB
YAML
# 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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$id: http://devicetree.org/schemas/spi/spi-mux.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Generic SPI Multiplexer
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description: |
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This binding describes a SPI bus multiplexer to route the SPI chip select
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signals. This can be used when you need more devices than the SPI controller
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has chip selects available. An example setup is shown in ASCII art; the actual
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setting of the multiplexer to a channel needs to be done by a specific SPI mux
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driver.
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MOSI /--------------------------------+--------+--------+--------\
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MISO |/------------------------------+|-------+|-------+|-------\|
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SCL ||/----------------------------+||------+||------+||------\||
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||| ||| ||| ||| |||
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+------------+ ||| ||| ||| |||
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| SoC ||| | +-+++-+ +-+++-+ +-+++-+ +-+++-+
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| ||| | | dev | | dev | | dev | | dev |
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| +--+++-+ | CS-X +------+\ +--+--+ +--+--+ +--+--+ +--+--+
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| | SPI +-|-------+ Mux |\\ CS-0 | | | |
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| +------+ | +--+---+\\\-------/ CS-1 | | |
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| | | \\\----------------/ CS-2 | |
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| +------+ | | \\-------------------------/ CS-3 |
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| | ? +-|----------/ \----------------------------------/
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| +------+ |
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+------------+
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allOf:
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- $ref: "/schemas/spi/spi-controller.yaml#"
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maintainers:
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- Chris Packham <chris.packham@alliedtelesis.co.nz>
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properties:
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compatible:
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const: spi-mux
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mux-controls:
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maxItems: 1
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required:
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- compatible
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- reg
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- spi-max-frequency
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- mux-controls
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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mux: mux-controller {
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compatible = "gpio-mux";
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#mux-control-cells = <0>;
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mux-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
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};
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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spi@0 {
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compatible = "spi-mux";
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <100000000>;
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mux-controls = <&mux>;
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spi-flash@0 {
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compatible = "jedec,spi-nor";
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <40000000>;
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};
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spi-device@1 {
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compatible = "lineartechnology,ltc2488";
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reg = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <10000000>;
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};
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};
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};
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