From c9f2e3c3ddab87d93cde99f6da10dd00c1d1edb9 Mon Sep 17 00:00:00 2001 From: Vitaly Rodionov Date: Tue, 11 May 2021 15:52:20 +0100 Subject: 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 Link: https://lore.kernel.org/r/20210511145220.125760-1-vitalyr@opensource.cirrus.com Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/sound/cs42l42.txt | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'Documentation/devicetree/bindings/sound/cs42l42.txt') 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: -- cgit v1.2.3