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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: PowerQUICC CPM Time-slot assigner (TSA) controller
maintainers:
- Herve Codina <herve.codina@bootlin.com>
description:
The TSA is the time-slot assigner that can be found on some PowerQUICC SoC.
Its purpose is to route some TDM time-slots to other internal serial
controllers.
properties:
compatible:
items:
- enum:
- fsl,mpc885-tsa
- fsl,mpc866-tsa
- const: fsl,cpm1-tsa
reg:
items:
- description: SI (Serial Interface) register base
- description: SI RAM base
reg-names:
items:
- const: si_regs
- const: si_ram
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
'^tdm@[0-1]$':
description:
The TDM managed by this controller
type: object
additionalProperties: false
properties:
reg:
minimum: 0
maximum: 1
description:
The TDM number for this TDM, 0 for TDMa and 1 for TDMb
fsl,common-rxtx-pins:
$ref: /schemas/types.yaml#/definitions/flag
description:
The hardware can use four dedicated pins for Tx clock, Tx sync, Rx
clock and Rx sync or use only two pins, Tx/Rx clock and Tx/Rx sync.
Without the 'fsl,common-rxtx-pins' property, the four pins are used.
With the 'fsl,common-rxtx-pins' property, two pins are used.
clocks:
minItems: 2
items:
- description: External clock connected to L1RSYNC pin
- description: External clock connected to L1RCLK pin
- description: External clock connected to L1TSYNC pin
- description: External clock connected to L1TCLK pin
clock-names:
minItems: 2
items:
- const: l1rsync
- const: l1rclk
- const: l1tsync
- const: l1tclk
fsl,rx-frame-sync-delay-bits:
enum: [0, 1, 2, 3]
default: 0
description: |
Receive frame sync delay in number of bits.
Indicates the delay between the Rx sync and the first bit of the Rx
frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
fsl,tx-frame-sync-delay-bits:
enum: [0, 1, 2, 3]
default: 0
description: |
Transmit frame sync delay in number of bits.
Indicates the delay between the Tx sync and the first bit of the Tx
frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
fsl,clock-falling-edge:
$ref: /schemas/types.yaml#/definitions/flag
description:
Data is sent on falling edge of the clock (and received on the rising
edge). If 'clock-falling-edge' is not present, data is sent on the
rising edge (and received on the falling edge).
fsl,fsync-rising-edge:
$ref: /schemas/types.yaml#/definitions/flag
description:
Frame sync pulses are sampled with the rising edge of the channel
clock. If 'fsync-rising-edge' is not present, pulses are sampled with
the falling edge.
fsl,double-speed-clock:
$ref: /schemas/types.yaml#/definitions/flag
description:
The channel clock is twice the data rate.
patternProperties:
'^fsl,[rt]x-ts-routes$':
$ref: /schemas/types.yaml#/definitions/uint32-matrix
description: |
A list of tuple that indicates the Tx or Rx time-slots routes.
items:
items:
- description:
The number of time-slots
minimum: 1
maximum: 64
- description: |
The source (Tx) or destination (Rx) serial interface
(dt-bindings/soc/cpm1-fsl,tsa.h defines these values)
- 0: No destination
- 1: SCC2
- 2: SCC3
- 3: SCC4
- 4: SMC1
- 5: SMC2
enum: [0, 1, 2, 3, 4, 5]
minItems: 1
maxItems: 64
allOf:
# If fsl,common-rxtx-pins is present, only 2 clocks are needed.
# Else, the 4 clocks must be present.
- if:
required:
- fsl,common-rxtx-pins
then:
properties:
clocks:
maxItems: 2
clock-names:
maxItems: 2
else:
properties:
clocks:
minItems: 4
clock-names:
minItems: 4
required:
- reg
- clocks
- clock-names
required:
- compatible
- reg
- reg-names
- '#address-cells'
- '#size-cells'
additionalProperties: false
examples:
- |
#include <dt-bindings/soc/cpm1-fsl,tsa.h>
tsa@ae0 {
compatible = "fsl,mpc885-tsa", "fsl,cpm1-tsa";
reg = <0xae0 0x10>,
<0xc00 0x200>;
reg-names = "si_regs", "si_ram";
#address-cells = <1>;
#size-cells = <0>;
tdm@0 {
/* TDMa */
reg = <0>;
clocks = <&clk_l1rsynca>, <&clk_l1rclka>;
clock-names = "l1rsync", "l1rclk";
fsl,common-rxtx-pins;
fsl,fsync-rising-edge;
fsl,tx-ts-routes = <2 0>, /* TS 0..1 */
<24 FSL_CPM_TSA_SCC4>, /* TS 2..25 */
<1 0>, /* TS 26 */
<5 FSL_CPM_TSA_SCC3>; /* TS 27..31 */
fsl,rx-ts-routes = <2 0>, /* TS 0..1 */
<24 FSL_CPM_TSA_SCC4>, /* 2..25 */
<1 0>, /* TS 26 */
<5 FSL_CPM_TSA_SCC3>; /* TS 27..31 */
};
};
|
