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Thu, 12 Mar 2026 06:12:29 -0700 (PDT) Received: from [192.168.0.39] ([79.133.247.80]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4854b0bff95sm85143035e9.3.2026.03.12.06.12.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Mar 2026 06:12:28 -0700 (PDT) From: Erikas Bitovtas Date: Thu, 12 Mar 2026 15:12:23 +0200 Subject: [PATCH] arm64: dts: qcom: msm8939-asus-z00t: add USB-OTG pin Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260312-z00t-otg-pin-v1-1-ce86137ab989@gmail.com> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x3MMQqAMAxA0auUzAbSWAS9ijhIGzVLlbaIKN7d4 viG/x/IklQyDOaBJKdm3WOFbQz4bY6roIZqYOKOWst4ExXcy4qHRnRWLHHo2bsANTmSLHr9u3F 63w9mLTF3XgAAAA== X-Change-ID: 20260312-z00t-otg-pin-41e102d92c4d To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, Erikas Bitovtas X-Mailer: b4 0.14.3 This device uses an ID pin set to active high to detect USB-OTG devices. Add support for it on extcon-usb-gpio. Signed-off-by: Erikas Bitovtas --- This device uses an ID pin to identify USB-OTG devices. In this commit we add support for USB-OTG gpio over pinctrl in extcon-usb-gpio. For USB to work in host mode, a vbus-supply is also needed. On this device, vbus is supplied by Summit Microelectronics SMB358 charging IC, for which there is a driver in mainline. Unfortunately, it cannot be added to this device tree at the moment, because charging detection does not work correctly - device begins to charge only upon probing the charger driver module. For now, we add just the pin - USB-OTG will require an adapter with an external power supply. --- arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts b/arch/arm64/bo= ot/dts/qcom/msm8939-asus-z00t.dts index ea90b00a2c8a..6c19044c24bc 100644 --- a/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts +++ b/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts @@ -127,7 +127,7 @@ reg_sd_vmmc: regulator-sdcard-vmmc { usb_id: usb-id { compatible =3D "linux,extcon-usb-gpio"; id-gpios =3D <&tlmm 110 GPIO_ACTIVE_HIGH>; - pinctrl-0 =3D <&usb_id_default>; + pinctrl-0 =3D <&usb_id_default>, <&usb_id_switch_default>; pinctrl-names =3D "default"; }; }; @@ -330,4 +330,11 @@ mag_reset_default: mag-reset-default-state { drive-strength =3D <2>; bias-disable; }; + + usb_id_switch_default: usb-id-switch-default-state { + pins =3D "gpio121"; + function =3D "gpio"; + drive-strength =3D <2>; + output-high; + }; }; --- base-commit: b0501426597b91ad69359c312e32fefe4cd8ec67 change-id: 20260312-z00t-otg-pin-41e102d92c4d Best regards, --=20 Erikas Bitovtas