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spi: dt-bindings: brcm,bcm2835-aux-spi: Convert to dtschema

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Convert bcm2835-aux-spi binding to Dt schema

Signed-off-by: Karan Sanghavi <karansanghvi98@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/ZxEm-H-PjlQyXeOH@Emma
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Karan Sanghavi 2024-10-17 15:02:16 +00:00 committed by Mark Brown
parent 941584e2f3
commit 4de1cdb3c2
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2 changed files with 53 additions and 38 deletions
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38
Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt
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Broadcom BCM2835 auxiliary SPI1/2 controller
The BCM2835 contains two forms of SPI master controller, one known simply as
SPI0, and the other known as the "Universal SPI Master"; part of the
auxiliary block. This binding applies to the SPI1/2 controller.
Required properties:
- compatible: Should be "brcm,bcm2835-aux-spi".
- reg: Should contain register location and length for the spi block
- interrupts: Should contain shared interrupt of the aux block
- clocks: The clock feeding the SPI controller - needs to
point to the auxiliary clock driver of the bcm2835,
as this clock will enable the output gate for the specific
clock.
- cs-gpios: the cs-gpios (native cs is NOT supported)
see also spi-bus.txt
Example:
spi1@7e215080 {
compatible = "brcm,bcm2835-aux-spi";
reg = <0x7e215080 0x40>;
interrupts = <1 29>;
clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>;
#address-cells = <1>;
#size-cells = <0>;
cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>;
};
spi2@7e2150c0 {
compatible = "brcm,bcm2835-aux-spi";
reg = <0x7e2150c0 0x40>;
interrupts = <1 29>;
clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>;
#address-cells = <1>;
#size-cells = <0>;
cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>;
};

53
Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/brcm,bcm2835-aux-spi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Broadcom BCM2835 Auxiliary SPI1/2 Controller
maintainers:
- Karan Sanghavi <karansanghvi98@gmail.com>
description:
The BCM2835 contains two forms of SPI master controller. One is known simply
as SPI0, and the other as the "Universal SPI Master," which is part of the
auxiliary block. This binding applies to the SPI1 and SPI2 auxiliary
controllers.
allOf:
- $ref: spi-controller.yaml#
properties:
compatible:
enum:
- brcm,bcm2835-aux-spi
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 1
required:
- compatible
- reg
- interrupts
- clocks
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/bcm2835-aux.h>
spi@7e215080 {
compatible = "brcm,bcm2835-aux-spi";
reg = <0x7e215080 0x40>;
interrupts = <1 29>;
clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>;
#address-cells = <1>;
#size-cells = <0>;
};