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arm64: dts: qcom: x1e78100-t14s: Enable audio headset support

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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 <srinivas.kandagatla@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Christopher Obbard <christopher.obbard@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20250327100633.11530-7-srinivas.kandagatla@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Srinivas Kandagatla 2025-03-27 10:06:33 +00:00 committed by Bjorn Andersson
parent 0302604658
commit 5603525e40
1 changed files with 25 additions and 0 deletions
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25
arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
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@ -37,6 +37,7 @@ wcd938x: audio-codec {
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 @@ pmic_glink_ss1_con_sbu_in: endpoint {
};
};
/* 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 @@ vreg_l15b_1p8: ldo15 {
regulator-always-on;
};
vreg_l16b_2p5: ldo16 {
regulator-name = "vreg_l16b_2p5";
regulator-min-microvolt = <2504000>;
regulator-max-microvolt = <2504000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
};
vreg_l17b_2p5: ldo17 {
regulator-name = "vreg_l17b_2p5";
regulator-min-microvolt = <2504000>;
@ -1396,6 +1414,13 @@ rtmr1_default: rtmr1-reset-n-active-state {
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";