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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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78d35a2078
The SPISG is a new communication oriented SPI controller of Amlogic, which supports PIO, block DMA and scatter-gather DMA three operation modes. Signed-off-by: Sunny Luo <sunny.luo@amlogic.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com> Link: https://patch.msgid.link/20250718-spisg-v5-1-b8f0f1eb93a2@amlogic.com Signed-off-by: Mark Brown <broonie@kernel.org>
60 lines
1.1 KiB
YAML
60 lines
1.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright (C) 2025 Amlogic, Inc. All rights reserved
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/spi/amlogic,a4-spisg.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Amlogic SPI Scatter-Gather Controller
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maintainers:
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- Xianwei Zhao <xianwei.zhao@amlogic.com>
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- Sunny Luo <sunny.luo@amlogic.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: amlogic,a4-spisg
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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maxItems: 2
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clock-names:
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items:
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- const: core
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- const: pclk
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resets:
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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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- interrupts
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- clocks
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- clock-names
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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spi@50000 {
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compatible = "amlogic,a4-spisg";
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reg = <0x50000 0x38>;
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interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&clkc 37>,
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<&clkc 93>;
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clock-names = "core", "pclk";
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#address-cells = <1>;
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#size-cells = <0>;
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};
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