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Date:   Sun, 24 Jul 2022 09:55:43 +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>,
        Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
        Stephen Boyd <sboyd@codeaurora.org>,
        Stephan Gerhold <stephan@gerhold.net>,
        Nikita Travkin <nikita@trvn.ru>, soc@kernel.org,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        ~postmarketos/upstreaming@lists.sr.ht
Reply-To: "Lin, Meng-Bo" <linmengbo0689@protonmail.com>
Subject: [PATCH v7 4/5] arm64: dts: qcom: msm8916-samsung-e2015: Add touchkey
Message-ID: <20220724095426.14189-1-linmengbo0689@protonmail.com>
In-Reply-To: <20220724095039.13568-1-linmengbo0689@protonmail.com>
References: <20220724095039.13568-1-linmengbo0689@protonmail.com>
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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 9caa8a161d31..542010fdfb8a 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
@@ -38,6 +38,19 @@ reg_motor_vdd: regulator-motor-vdd {
 =09=09pinctrl-names =3D "default";
 =09=09pinctrl-0 =3D <&motor_en_default>;
 =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};
 };

 &blsp_i2c2 {
@@ -48,6 +61,11 @@ &blsp_i2c2 {
 =09/delete-node/ magnetometer@12;
 };

+&touchkey {
+=09vcc-supply =3D <&reg_touch_key>;
+=09vdd-supply =3D <&reg_touch_key>;
+};
+
 &msmgpio {
 =09motor_en_default: motor-en-default {
 =09=09pins =3D "gpio76";
@@ -56,4 +74,12 @@ 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 4c1becdb9428..bc7134698978 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
@@ -41,6 +41,10 @@ &reg_motor_vdd {
 =09gpio =3D <&msmgpio 72 GPIO_ACTIVE_HIGH>;
 };

+&reg_touch_key {
+=09status =3D "disabled";
+};
+
 &msmgpio {
 =09gpio_leds_default: gpio-led-default {
 =09=09pins =3D "gpio60";
--
2.30.2