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This adds device tree bindings for the IXP46x PTP Timer, a companion to the IXP4xx ethernet in newer platforms. Cc: devicetree@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Documentation/devicetree/bindings/net/intel,ixp46x-ptp-timer.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) | ||
# Copyright 2018 Linaro Ltd. | ||
%YAML 1.2 | ||
--- | ||
$id: "http://devicetree.org/schemas/net/intel,ixp46x-ptp-timer.yaml#" | ||
$schema: "http://devicetree.org/meta-schemas/core.yaml#" | ||
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title: Intel IXP46x PTP Timer (TSYNC) | ||
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maintainers: | ||
- Linus Walleij <linus.walleij@linaro.org> | ||
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description: | | ||
The Intel IXP46x PTP timer is known in the manual as IEEE1588 Hardware | ||
Assist and Time Synchronization Hardware Assist TSYNC provides a PTP | ||
timer. It exists in the Intel IXP45x and IXP46x XScale SoCs. | ||
properties: | ||
compatible: | ||
const: intel,ixp46x-ptp-timer | ||
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reg: | ||
maxItems: 1 | ||
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interrupts: | ||
items: | ||
- description: Interrupt to trigger master mode snapshot from the | ||
PRP timer, usually a GPIO interrupt. | ||
- description: Interrupt to trigger slave mode snapshot from the | ||
PRP timer, usually a GPIO interrupt. | ||
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interrupt-names: | ||
items: | ||
- const: master | ||
- const: slave | ||
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required: | ||
- compatible | ||
- reg | ||
- interrupts | ||
- interrupt-names | ||
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additionalProperties: false | ||
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examples: | ||
- | | ||
#include <dt-bindings/interrupt-controller/irq.h> | ||
ptp-timer@c8010000 { | ||
compatible = "intel,ixp46x-ptp-timer"; | ||
reg = <0xc8010000 0x1000>; | ||
interrupt-parent = <&gpio0>; | ||
interrupts = <8 IRQ_TYPE_EDGE_FALLING>, <7 IRQ_TYPE_EDGE_FALLING>; | ||
interrupt-names = "master", "slave"; | ||
}; |