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Subject[PATCH v5 5/8] regulator: lochnagar: Add initial binding documentation
Date
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>
---
.../bindings/regulator/cirrus,lochnagar.txt | 82 ++++++++++++++++++++++
1 file changed, 82 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/cirrus,lochnagar.txt

diff --git a/Documentation/devicetree/bindings/regulator/cirrus,lochnagar.txt b/Documentation/devicetree/bindings/regulator/cirrus,lochnagar.txt
new file mode 100644
index 000000000000..91974e6ee251
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/cirrus,lochnagar.txt
@@ -0,0 +1,82 @@
+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>;
+ };
+};
+
--
2.11.0
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