169 lines
4.7 KiB
YAML
169 lines
4.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/net/can/fsl,flexcan.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title:
|
|
Flexcan CAN controller on Freescale's ARM and PowerPC system-on-a-chip (SOC).
|
|
|
|
maintainers:
|
|
- Marc Kleine-Budde <mkl@pengutronix.de>
|
|
|
|
allOf:
|
|
- $ref: can-controller.yaml#
|
|
|
|
properties:
|
|
compatible:
|
|
oneOf:
|
|
- enum:
|
|
- fsl,imx93-flexcan
|
|
- fsl,imx8qm-flexcan
|
|
- fsl,imx8mp-flexcan
|
|
- fsl,imx6q-flexcan
|
|
- fsl,imx28-flexcan
|
|
- fsl,imx25-flexcan
|
|
- fsl,p1010-flexcan
|
|
- fsl,vf610-flexcan
|
|
- fsl,ls1021ar2-flexcan
|
|
- fsl,lx2160ar1-flexcan
|
|
- items:
|
|
- enum:
|
|
- fsl,imx53-flexcan
|
|
- fsl,imx35-flexcan
|
|
- const: fsl,imx25-flexcan
|
|
- items:
|
|
- enum:
|
|
- fsl,imx7d-flexcan
|
|
- fsl,imx6ul-flexcan
|
|
- fsl,imx6sx-flexcan
|
|
- const: fsl,imx6q-flexcan
|
|
- items:
|
|
- enum:
|
|
- fsl,ls1028ar1-flexcan
|
|
- const: fsl,lx2160ar1-flexcan
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
interrupts:
|
|
maxItems: 1
|
|
|
|
clocks:
|
|
maxItems: 2
|
|
|
|
clock-names:
|
|
items:
|
|
- const: ipg
|
|
- const: per
|
|
|
|
clock-frequency:
|
|
description: |
|
|
The oscillator frequency driving the flexcan device, filled in by the
|
|
boot loader. This property should only be used the used operating system
|
|
doesn't support the clocks and clock-names property.
|
|
|
|
xceiver-supply:
|
|
description: Regulator that powers the CAN transceiver.
|
|
|
|
big-endian:
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
|
description: |
|
|
This means the registers of FlexCAN controller are big endian. This is
|
|
optional property.i.e. if this property is not present in device tree
|
|
node then controller is assumed to be little endian. If this property is
|
|
present then controller is assumed to be big endian.
|
|
|
|
fsl,stop-mode:
|
|
description: |
|
|
Register bits of stop mode control.
|
|
|
|
The format should be as follows:
|
|
<gpr req_gpr req_bit>
|
|
gpr is the phandle to general purpose register node.
|
|
req_gpr is the gpr register offset of CAN stop request.
|
|
req_bit is the bit offset of CAN stop request.
|
|
$ref: /schemas/types.yaml#/definitions/phandle-array
|
|
items:
|
|
- items:
|
|
- description: The 'gpr' is the phandle to general purpose register node.
|
|
- description: The 'req_gpr' is the gpr register offset of CAN stop request.
|
|
maximum: 0xff
|
|
- description: The 'req_bit' is the bit offset of CAN stop request.
|
|
maximum: 0x1f
|
|
|
|
fsl,clk-source:
|
|
description: |
|
|
Select the clock source to the CAN Protocol Engine (PE). It's SoC
|
|
implementation dependent. Refer to RM for detailed definition. If this
|
|
property is not set in device tree node then driver selects clock source 1
|
|
by default.
|
|
0: clock source 0 (oscillator clock)
|
|
1: clock source 1 (peripheral clock)
|
|
$ref: /schemas/types.yaml#/definitions/uint8
|
|
default: 1
|
|
minimum: 0
|
|
maximum: 1
|
|
|
|
wakeup-source:
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
|
description:
|
|
Enable CAN remote wakeup.
|
|
|
|
fsl,scu-index:
|
|
description: |
|
|
The scu index of CAN instance.
|
|
For SoCs with SCU support, need setup stop mode via SCU firmware, so this
|
|
property can help indicate a resource. It supports up to 3 CAN instances
|
|
now.
|
|
$ref: /schemas/types.yaml#/definitions/uint8
|
|
minimum: 0
|
|
maximum: 2
|
|
|
|
termination-gpios: true
|
|
termination-ohms: true
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- interrupts
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
can@1c000 {
|
|
compatible = "fsl,p1010-flexcan";
|
|
reg = <0x1c000 0x1000>;
|
|
interrupts = <48 0x2>;
|
|
interrupt-parent = <&mpic>;
|
|
clock-frequency = <200000000>;
|
|
fsl,clk-source = /bits/ 8 <0>;
|
|
};
|
|
- |
|
|
#include <dt-bindings/interrupt-controller/irq.h>
|
|
|
|
can@2090000 {
|
|
compatible = "fsl,imx6q-flexcan";
|
|
reg = <0x02090000 0x4000>;
|
|
interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&clks 1>, <&clks 2>;
|
|
clock-names = "ipg", "per";
|
|
fsl,stop-mode = <&gpr 0x34 28>;
|
|
fsl,scu-index = /bits/ 8 <1>;
|
|
};
|
|
- |
|
|
#include <dt-bindings/interrupt-controller/irq.h>
|
|
#include <dt-bindings/gpio/gpio.h>
|
|
|
|
can@2090000 {
|
|
compatible = "fsl,imx6q-flexcan";
|
|
reg = <0x02090000 0x4000>;
|
|
interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&clks 1>, <&clks 2>;
|
|
clock-names = "ipg", "per";
|
|
fsl,stop-mode = <&gpr 0x34 28>;
|
|
termination-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
|
|
termination-ohms = <120>;
|
|
};
|