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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 BayLibre, SAS
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/amlogic,meson-gx-spicc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Amlogic Meson SPI Communication Controller
maintainers:
- Neil Armstrong <neil.armstrong@linaro.org>
description: |
The Meson SPICC is a generic SPI controller for general purpose Full-Duplex
communications with dedicated 16 words RX/TX PIO FIFOs.
properties:
compatible:
enum:
- amlogic,meson-gx-spicc # SPICC controller on Amlogic GX and compatible SoCs
- amlogic,meson-axg-spicc # SPICC controller on Amlogic AXG and compatible SoCs
- amlogic,meson-g12a-spicc # SPICC controller on Amlogic G12A and compatible SoCs
interrupts:
maxItems: 1
reg:
maxItems: 1
resets:
maxItems: 1
clocks:
minItems: 1
items:
- description: controller register bus clock
- description: baud rate generator and delay control clock
clock-names:
minItems: 1
maxItems: 2
allOf:
- $ref: spi-controller.yaml#
- if:
properties:
compatible:
contains:
enum:
- amlogic,meson-g12a-spicc
then:
properties:
clocks:
minItems: 2
clock-names:
items:
- const: core
- const: pclk
else:
properties:
clocks:
maxItems: 1
clock-names:
items:
- const: core
- if:
properties:
compatible:
contains:
enum:
- amlogic,meson-gx-spicc
then:
properties:
pinctrl-0: true
pinctrl-1: true
pinctrl-2: true
pinctrl-names:
minItems: 1
items:
- const: default
- const: idle-high
- const: idle-low
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
unevaluatedProperties: false
examples:
- |
spi@c1108d80 {
compatible = "amlogic,meson-gx-spicc";
reg = <0xc1108d80 0x80>;
interrupts = <112>;
clocks = <&clk81>;
clock-names = "core";
#address-cells = <1>;
#size-cells = <0>;
display@0 {
compatible = "lg,lg4573";
spi-max-frequency = <1000000>;
reg = <0>;
};
};
|
