Describe the properties used for shared boost
configuration.
Based on David Rhodes shared boost patches.
Signed-off-by: Lucas Tanure <lucas.tanure@xxxxxxxxxxxxx>
---
.../devicetree/bindings/sound/cirrus,cs35l41.yaml | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs35l41.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs35l41.yaml
index 8465623bbd96..54f769159ce4 100644
--- a/Documentation/devicetree/bindings/sound/cirrus,cs35l41.yaml
+++ b/Documentation/devicetree/bindings/sound/cirrus,cs35l41.yaml
@@ -86,12 +86,20 @@ properties:
External Boost must have GPIO1 as GPIO output. GPIO1 will be set high to
enable boost voltage.
External Boost without GPIO1 as VSPK switch is no longer supported.
+ Shared boost allows two amplifiers to share a single boost circuit by
+ communicating on the MDSYNC bus. The passive amplifier does not control
+ the boost and receives data from the active amplifier. GPIO1 should be
+ configured for Sync when shared boost is used. Shared boost is not
+ compatible with External boost. Active amplifier requires
+ boost-peak-milliamp, boost-ind-nanohenry and boost-cap-microfarad.
0 = Internal Boost
1 = External Boost
2 = External Boost without VPSK switch (Do not use in new systems)
+ 3 = Shared Boost Active
+ 4 = Shared Boost Passive
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
- maximum: 2
+ maximum: 4
cirrus,gpio1-polarity-invert:
description:
--
2.39.1
