mirror of
https://github.com/torvalds/linux.git
synced 2026-04-25 01:52:32 -04:00
0f9710603e
Replace the old .txt binding with a new schema binding. At the same time, some of the descriptions are updated to make them clearer, fix errors, or just make them fit better into the style of schema binding. The cirrus,hs-bias-ramp-rate property was missing from the old .txt binding and has been added to the yaml. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20211028140902.11786-4-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
226 lines
6.1 KiB
YAML
226 lines
6.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/sound/cirrus,cs42l42.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Cirrus Logic CS42L42 audio CODEC
|
|
|
|
maintainers:
|
|
- patches@opensource.cirrus.com
|
|
|
|
description:
|
|
The CS42L42 is a low-power audio codec designed for portable applications.
|
|
It provides a high-dynamic range, stereo DAC for audio playback and a mono
|
|
high-dynamic-range ADC for audio capture. There is an integrated headset
|
|
detection block.
|
|
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- cirrus,cs42l42
|
|
|
|
reg:
|
|
description:
|
|
The I2C address of the CS42L42.
|
|
maxItems: 1
|
|
|
|
VP-supply:
|
|
description:
|
|
VP power supply.
|
|
|
|
VCP-supply:
|
|
description:
|
|
Charge pump power supply.
|
|
|
|
VD_FILT-supply:
|
|
description:
|
|
FILT+ power supply.
|
|
|
|
VL-supply:
|
|
description:
|
|
Logic power supply.
|
|
|
|
VA-supply:
|
|
description:
|
|
Analog power supply.
|
|
|
|
reset-gpios:
|
|
description:
|
|
This pin will be asserted and then deasserted to reset the
|
|
CS42L42 before communication starts.
|
|
maxItems: 1
|
|
|
|
interrupts:
|
|
description:
|
|
Interrupt for CS42L42 IRQ line.
|
|
maxItems: 1
|
|
|
|
cirrus,ts-inv:
|
|
description: |
|
|
Sets the behaviour of the jack plug detect switch.
|
|
|
|
0 - (Default) Shorted to tip when unplugged, open when plugged.
|
|
This is "inverted tip sense (ITS)" in the datasheet.
|
|
|
|
1 - Open when unplugged, shorted to tip when plugged.
|
|
This is "normal tip sense (TS)" in the datasheet.
|
|
|
|
The CS42L42_TS_INV_* defines are available for this.
|
|
$ref: "/schemas/types.yaml#/definitions/uint32"
|
|
minimum: 0
|
|
maximum: 1
|
|
|
|
cirrus,ts-dbnc-rise:
|
|
description: |
|
|
Debounce the rising edge of TIP_SENSE_PLUG. With no
|
|
debounce, the tip sense pin might be noisy on a plug event.
|
|
|
|
0 - 0ms
|
|
1 - 125ms
|
|
2 - 250ms
|
|
3 - 500ms
|
|
4 - 750ms
|
|
5 - 1s (Default)
|
|
6 - 1.25s
|
|
7 - 1.5s
|
|
|
|
The CS42L42_TS_DBNCE_* defines are available for this.
|
|
$ref: "/schemas/types.yaml#/definitions/uint32"
|
|
minimum: 0
|
|
maximum: 7
|
|
|
|
cirrus,ts-dbnc-fall:
|
|
description: |
|
|
Debounce the falling edge of TIP_SENSE_UNPLUG. With no
|
|
debounce, the tip sense pin might be noisy on an unplug event.
|
|
|
|
0 - 0ms
|
|
1 - 125ms
|
|
2 - 250ms
|
|
3 - 500ms
|
|
4 - 750ms
|
|
5 - 1s (Default)
|
|
6 - 1.25s
|
|
7 - 1.5s
|
|
|
|
The CS42L42_TS_DBNCE_* defines are available for this.
|
|
$ref: "/schemas/types.yaml#/definitions/uint32"
|
|
minimum: 0
|
|
maximum: 7
|
|
|
|
cirrus,btn-det-init-dbnce:
|
|
description: |
|
|
This sets how long to wait after enabling button detection
|
|
interrupts before servicing button interrupts, to allow the
|
|
HS bias time to settle. Value is in milliseconds.
|
|
There may be erroneous button interrupts if this debounce time
|
|
is too short.
|
|
|
|
0ms - 200ms,
|
|
Default = 100ms
|
|
$ref: "/schemas/types.yaml#/definitions/uint32"
|
|
minimum: 0
|
|
maximum: 200
|
|
|
|
cirrus,btn-det-event-dbnce:
|
|
description: |
|
|
This sets how long to wait after receiving a button press
|
|
interrupt before processing it. Allows time for the button
|
|
press to make a clean connection with the bias resistors.
|
|
Value is in milliseconds.
|
|
|
|
0ms - 20ms,
|
|
Default = 10ms
|
|
$ref: "/schemas/types.yaml#/definitions/uint32"
|
|
minimum: 0
|
|
maximum: 20
|
|
|
|
cirrus,bias-lvls:
|
|
description: |
|
|
For a level-detect headset button scheme, each button will bias
|
|
the mic pin to a certain voltage. To determine which button was
|
|
pressed, the voltage is compared to sequential, decreasing
|
|
voltages, until the compared voltage < bias voltage.
|
|
For different hardware setups, a designer might want to tweak this.
|
|
This is an array of descending values for the comparator voltage,
|
|
given as percent of the HSBIAS voltage.
|
|
|
|
Array of 4 values, each 0-63
|
|
< x1 x2 x3 x4 >
|
|
Default = < 15 8 4 1 >
|
|
$ref: /schemas/types.yaml#/definitions/uint32-array
|
|
minItems: 4
|
|
maxItems: 4
|
|
items:
|
|
minimum: 0
|
|
maximum: 63
|
|
|
|
cirrus,hs-bias-ramp-rate:
|
|
description: |
|
|
If present this sets the rate that the HS bias should rise and fall.
|
|
The actual rise and fall times depend on external hardware (the
|
|
datasheet gives several rise and fall time examples).
|
|
|
|
0 - Fast rise time; slow, load-dependent fall time
|
|
1 - Fast
|
|
2 - Slow (default)
|
|
3 - Slowest
|
|
|
|
The CS42L42_HSBIAS_RAMP_* defines are available for this.
|
|
$ref: "/schemas/types.yaml#/definitions/uint32"
|
|
minimum: 0
|
|
maximum: 3
|
|
|
|
cirrus,hs-bias-sense-disable:
|
|
description: |
|
|
If present the HSBIAS sense is disabled. Configures HSBIAS output
|
|
current sense through the external 2.21-k resistor. HSBIAS_SENSE
|
|
is a hardware feature to reduce the potential pop noise when the
|
|
headset plug is removed slowly. But on some platforms ESD voltage
|
|
will affect it causing plug detection to fail, especially with CTIA
|
|
headset type. For different hardware setups, a designer might want
|
|
to tweak default behavior.
|
|
type: boolean
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- VP-supply
|
|
- VCP-supply
|
|
- VD_FILT-supply
|
|
- VL-supply
|
|
- VA-supply
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/sound/cs42l42.h>
|
|
i2c {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
cs42l42: cs42l42@48 {
|
|
compatible = "cirrus,cs42l42";
|
|
reg = <0x48>;
|
|
VA-supply = <&dummy_vreg>;
|
|
VP-supply = <&dummy_vreg>;
|
|
VCP-supply = <&dummy_vreg>;
|
|
VD_FILT-supply = <&dummy_vreg>;
|
|
VL-supply = <&dummy_vreg>;
|
|
|
|
reset-gpios = <&axi_gpio_0 1 0>;
|
|
interrupt-parent = <&gpio0>;
|
|
interrupts = <55 8>;
|
|
|
|
cirrus,ts-inv = <CS42L42_TS_INV_DIS>;
|
|
cirrus,ts-dbnc-rise = <CS42L42_TS_DBNCE_1000>;
|
|
cirrus,ts-dbnc-fall = <CS42L42_TS_DBNCE_0>;
|
|
cirrus,btn-det-init-dbnce = <100>;
|
|
cirrus,btn-det-event-dbnce = <10>;
|
|
cirrus,bias-lvls = <0x0F 0x08 0x04 0x01>;
|
|
cirrus,hs-bias-ramp-rate = <CS42L42_HSBIAS_RAMP_SLOW>;
|
|
};
|
|
};
|