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Date:   Thu, 14 Jul 2022 20:05:58 +0000
To:     devicetree@vger.kernel.org
From:   "Lin, Meng-Bo" <linmengbo0689@protonmail.com>
Cc:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        Stephan Gerhold <stephan@gerhold.net>,
        Nikita Travkin <nikita@trvn.ru>,
        ~postmarketos/upstreaming@lists.sr.ht
Reply-To: "Lin, Meng-Bo" <linmengbo0689@protonmail.com>
Subject: [PATCH 3/3] arm64: dts: qcom: msm8916-samsung-e2015: Add touchkey
Message-ID: <20220714200346.22263-1-linmengbo0689@protonmail.com>
Feedback-ID: 40467236:user:proton
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Precedence: bulk

On the Samsung Galaxy E5 and E7 the touch key is supplied by a single
fixed regulator (enabled via GPIO 97) that supplies both MCU and LED.
Add it to the device tree.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../qcom/msm8916-samsung-e2015-common.dtsi    | 26 +++++++++++++++++++
 .../dts/qcom/msm8916-samsung-grandmax.dts     |  4 +++
 2 files changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi b/a=
rch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
index 373154ee2643..9f3aca17130d 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
@@ -19,6 +19,19 @@ muic: extcon@14 {
 =09=09};
 =09};

+=09reg_touch_key: regulator-touch-key {
+=09=09compatible =3D "regulator-fixed";
+=09=09regulator-name =3D "touch_key";
+=09=09regulator-min-microvolt =3D <3300000>;
+=09=09regulator-max-microvolt =3D <3300000>;
+
+=09=09gpio =3D <&msmgpio 97 GPIO_ACTIVE_HIGH>;
+=09=09enable-active-high;
+
+=09=09pinctrl-names =3D "default";
+=09=09pinctrl-0 =3D <&tkey_en_default>;
+=09};
+
 =09vibrator: vibrator {
 =09=09compatible =3D "gpio-vibrator";
 =09=09enable-gpios =3D <&msmgpio 76 GPIO_ACTIVE_HIGH>;
@@ -28,6 +41,11 @@ vibrator: vibrator {
 =09};
 };

+&touchkey {
+=09vcc-supply =3D <&reg_touch_key>;
+=09vdd-supply =3D <&reg_touch_key>;
+};
+
 &msmgpio {
 =09motor_en_default: motor-en-default {
 =09=09pins =3D "gpio76";
@@ -36,4 +54,12 @@ motor_en_default: motor-en-default {
 =09=09drive-strength =3D <2>;
 =09=09bias-disable;
 =09};
+
+=09tkey_en_default: tkey-en-default {
+=09=09pins =3D "gpio97";
+=09=09function =3D "gpio";
+
+=09=09drive-strength =3D <2>;
+=09=09bias-disable;
+=09};
 };
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts b/arch/a=
rm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
index 41aada4bfb80..f68dd3d69a33 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
@@ -27,6 +27,10 @@ / {
 =09/delete-node/ i2c-tkey;
 };

+&reg_touch_key {
+=09status =3D "disabled";
+};
+
 &vibrator {
 =09enable-gpios =3D <&msmgpio 72 GPIO_ACTIVE_HIGH>;
 };
--
2.30.2