mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 13:51:44 +00:00
9e6d9c9b73
Lochnagar is an evaluation and development board for Cirrus Logic Smart CODEC and Amp devices. It allows the connection of most Cirrus Logic devices on mini-cards, as well as allowing connection of various application processor systems to provide a full evaluation platform. This driver supports the board controller chip on the Lochnagar board. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
83 lines
2.8 KiB
Plaintext
83 lines
2.8 KiB
Plaintext
Cirrus Logic Lochnagar Audio Development Board
|
|
|
|
Lochnagar is an evaluation and development board for Cirrus Logic
|
|
Smart CODEC and Amp devices. It allows the connection of most Cirrus
|
|
Logic devices on mini-cards, as well as allowing connection of
|
|
various application processor systems to provide a full evaluation
|
|
platform. Audio system topology, clocking and power can all be
|
|
controlled through the Lochnagar, allowing the device under test
|
|
to be used in a variety of possible use cases.
|
|
|
|
This binding document describes the binding for the regulator portion
|
|
of the driver.
|
|
|
|
Also see these documents for generic binding information:
|
|
[1] Regulator: ../regulator/regulator.txt
|
|
|
|
This binding must be part of the Lochnagar MFD binding:
|
|
[2] ../mfd/cirrus,lochnagar.txt
|
|
|
|
Optional sub-nodes:
|
|
|
|
- VDDCORE : Initialisation data for the VDDCORE regulator, which
|
|
supplies the CODECs digital core if it has no build regulator for that
|
|
purpose.
|
|
Required Properties:
|
|
- compatible : One of the following strings:
|
|
"cirrus,lochnagar2-vddcore"
|
|
- SYSVDD-supply: Primary power supply for the Lochnagar.
|
|
|
|
- MICVDD : Initialisation data for the MICVDD regulator, which
|
|
supplies the CODECs MICVDD.
|
|
Required Properties:
|
|
- compatible : One of the following strings:
|
|
"cirrus,lochnagar2-micvdd"
|
|
- SYSVDD-supply: Primary power supply for the Lochnagar.
|
|
|
|
- MIC1VDD, MIC2VDD : Initialisation data for the MICxVDD supplies.
|
|
Required Properties:
|
|
- compatible : One of the following strings:
|
|
"cirrus,lochnagar2-mic1vdd", "cirrus,lochnagar2-mic2vdd"
|
|
Optional Properties:
|
|
- cirrus,micbias-input : A property selecting which of the CODEC
|
|
minicard micbias outputs should be used, valid values are 1 - 4.
|
|
- MICBIAS1-supply, MICBIAS2-supply: Regulator supplies for the
|
|
MICxVDD outputs, supplying the digital microphones, normally
|
|
supplied from the attached CODEC.
|
|
|
|
- VDD1V8 : Recommended fixed regulator for the VDD1V8 regulator, which supplies the
|
|
CODECs analog and 1.8V digital supplies.
|
|
Required Properties:
|
|
- compatible : Should be set to "regulator-fixed"
|
|
- regulator-min-microvolt : Should be set to 1.8V
|
|
- regulator-max-microvolt : Should be set to 1.8V
|
|
- regulator-boot-on
|
|
- regulator-always-on
|
|
- vin-supply : Should be set to same supply as SYSVDD
|
|
|
|
Example:
|
|
|
|
lochnagar {
|
|
lochnagar-micvdd: MICVDD {
|
|
compatible = "cirrus,lochnagar2-micvdd";
|
|
|
|
SYSVDD-supply = <&wallvdd>;
|
|
|
|
regulator-min-microvolt = <3300000>;
|
|
regulator-max-microvolt = <3300000>;
|
|
};
|
|
|
|
lochnagar-vdd1v8: VDD1V8 {
|
|
compatible = "regulator-fixed";
|
|
|
|
regulator-name = "VDD1V8";
|
|
regulator-min-microvolt = <1800000>;
|
|
regulator-max-microvolt = <1800000>;
|
|
regulator-boot-on;
|
|
regulator-always-on;
|
|
|
|
vin-supply = <&wallvdd>;
|
|
};
|
|
};
|
|
|