From 5603525e40e3257ea507ff34f8acd5790fb8bc49 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Thu, 27 Mar 2025 10:06:33 +0000 Subject: [PATCH] arm64: dts: qcom: x1e78100-t14s: Enable audio headset support On Lenovo ThinkPad T14s, the headset is connected via a HiFi mux to support CTIA and OMTP headsets. This switch is used to minimise pop and click during headset type switching. Enable the mux controls required to power this switch along with wiring up gpio that control the headset switching. Without this, headset audio will be very noisy and might see headset detection errors. Signed-off-by: Srinivas Kandagatla Reviewed-by: Krzysztof Kozlowski Tested-by: Christopher Obbard Reviewed-by: Johan Hovold Tested-by: Johan Hovold Link: https://lore.kernel.org/r/20250327100633.11530-7-srinivas.kandagatla@linaro.org Signed-off-by: Bjorn Andersson --- .../qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi index 14ddf4fc7693..ac1dddf27da3 100644 --- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi +++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi @@ -37,6 +37,7 @@ qcom,tx-device = <&wcd_tx>; reset-gpios = <&tlmm 191 GPIO_ACTIVE_LOW>; + mux-controls = <&us_euro_mux_ctrl>; vdd-buck-supply = <&vreg_l15b_1p8>; vdd-rxtx-supply = <&vreg_l15b_1p8>; @@ -145,6 +146,16 @@ }; }; + /* two muxes together support CTIA and OMTP switching */ + us_euro_mux_ctrl: mux-controller { + compatible = "gpio-mux"; + pinctrl-0 = <&us_euro_hs_sel>; + pinctrl-names = "default"; + mux-supply = <&vreg_l16b_2p5>; + #mux-control-cells = <0>; + mux-gpios = <&tlmm 68 GPIO_ACTIVE_HIGH>; + }; + reserved-memory { linux,cma { compatible = "shared-dma-pool"; @@ -515,6 +526,13 @@ regulator-always-on; }; + vreg_l16b_2p5: ldo16 { + regulator-name = "vreg_l16b_2p5"; + regulator-min-microvolt = <2504000>; + regulator-max-microvolt = <2504000>; + regulator-initial-mode = ; + }; + vreg_l17b_2p5: ldo17 { regulator-name = "vreg_l17b_2p5"; regulator-min-microvolt = <2504000>; @@ -1396,6 +1414,13 @@ bias-disable; }; + us_euro_hs_sel: us-euro-hs-sel-state { + pins = "gpio68"; + function = "gpio"; + bias-pull-down; + drive-strength = <2>; + }; + usb1_pwr_1p15_reg_en: usb1-pwr-1p15-reg-en-state { pins = "gpio188"; function = "gpio"; -- 2.50.1