diff options
| author | Vitaly Rodionov <vitalyr@opensource.cirrus.com> | 2021-05-11 15:52:20 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-05-12 13:02:53 +0100 |
| commit | c9f2e3c3ddab87d93cde99f6da10dd00c1d1edb9 (patch) | |
| tree | 494d8f48900b08c1d0b31258b00d5754f744896c /Documentation/devicetree/bindings/sound/cs42l42.txt | |
| parent | 9b7493468fa7eeef2e86b8c646c0535c00eed3e2 (diff) | |
ASoC: cs42l42: make HSBIAS_SENSE_EN optional
HSBIAS_SENSE_EN configures HSBIAS output current sense through
the external 2.21-k resistor. HSBIAS_SENSE is hardware feature to reduce
the potential pop noise during the headset plug out slowly. But on some
platforms ESD voltage will affect it causing test to fail, especially
with CTIA headset type. For different hardware setups, a designer might
want to tweak default behavior.
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210511145220.125760-1-vitalyr@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/sound/cs42l42.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/cs42l42.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/cs42l42.txt b/Documentation/devicetree/bindings/sound/cs42l42.txt index 7dfaa2ab906f..5d416fdaf023 100644 --- a/Documentation/devicetree/bindings/sound/cs42l42.txt +++ b/Documentation/devicetree/bindings/sound/cs42l42.txt @@ -81,6 +81,13 @@ Optional properties: < x1 x2 x3 x4 > Default = < 15 8 4 1> + - cirrus,hs-bias-sense-disable: This is boolean property. If present the + HSBIAS sense is disabled. Configures HSBIAS output current sense through + the external 2.21-k resistor. HSBIAS_SENSE is hardware feature to reduce + the potential pop noise during the headset plug out slowly. But on some + platforms ESD voltage will affect it causing test to fail, especially + with CTIA headset type. For different hardware setups, a designer might + want to tweak default behavior. Example: |