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The Amlogic G12A SPICC controllers uses a secondary clock used to feed the baud rate generator and the delay control logic. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://lore.kernel.org/r/20200312133131.26430-9-narmstrong@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
90 lines
1.9 KiB
YAML
90 lines
1.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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# Copyright 2019 BayLibre, SAS
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/spi/amlogic,meson-gx-spicc.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Amlogic Meson SPI Communication Controller
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maintainers:
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- Neil Armstrong <narmstrong@baylibre.com>
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allOf:
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- $ref: "spi-controller.yaml#"
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description: |
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The Meson SPICC is a generic SPI controller for general purpose Full-Duplex
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communications with dedicated 16 words RX/TX PIO FIFOs.
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properties:
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compatible:
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enum:
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- amlogic,meson-gx-spicc # SPICC controller on Amlogic GX and compatible SoCs
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- amlogic,meson-axg-spicc # SPICC controller on Amlogic AXG and compatible SoCs
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- amlogic,meson-g12a-spicc # SPICC controller on Amlogic G12A and compatible SoCs
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interrupts:
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maxItems: 1
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reg:
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maxItems: 1
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resets:
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maxItems: 1
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clocks:
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maxItems: 1
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clock-names:
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description: input clock for the baud rate generator
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items:
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- const: core
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if:
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properties:
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compatible:
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contains:
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enum:
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- amlogic,meson-g12a-spicc
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then:
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properties:
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clocks:
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contains:
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items:
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- description: controller register bus clock
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- description: baud rate generator and delay control clock
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clock-names:
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minItems: 2
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items:
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- const: core
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- const: pclk
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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examples:
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- |
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spi@c1108d80 {
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compatible = "amlogic,meson-gx-spicc";
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reg = <0xc1108d80 0x80>;
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interrupts = <112>;
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clocks = <&clk81>;
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clock-names = "core";
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#address-cells = <1>;
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#size-cells = <0>;
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ethernet-switch@0 {
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compatible = "micrel,ks8995m";
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spi-max-frequency = <1000000>;
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reg = <0>;
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};
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};
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