From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f169.google.com (mail-pf1-f169.google.com [209.85.210.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D173E3D813A for ; Wed, 15 Jul 2026 08:55:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784105741; cv=none; b=Hf8r8P/Xgy/cPByVr88P76y5J2FyUpk8dbdtTyQuU9bvIbnAr3GsVrtTZXnATASOlq03Tm4LL7IGj8wXLt7GItRLI6Y6J+W1qq8bFHx/MoteT/ChgrhelbjyU5bwxiMqapgEJDOxofYqyQndP1576A9p1dk5eX2IjzrGg3p1LP0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784105741; c=relaxed/simple; bh=YJyU75cpPuviW3DeoVCtVsycwY35EMz4CrOCdWp2v74=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nz2Gv260Tilivq6TZjW1JCcEzcOb+punAWO632JD9rrOqHoIxHCk5zZS6MqeA0kXDqaDGVIPWyMYLlWhdvlLaRrA2kRgC4qR11gly1Lcgzk9A1mtd6PuVFCP++emU+X8qa9T1ywttf0Zn/4EACgqrMqyT+r2NFHAcSglI6pu8Jo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=OVszIwLS; arc=none smtp.client-ip=209.85.210.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="OVszIwLS" Received: by mail-pf1-f169.google.com with SMTP id d2e1a72fcca58-848882fdb18so1898310b3a.0 for ; Wed, 15 Jul 2026 01:55:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1784105733; x=1784710533; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=fzcA9TG2yqej8iZO6JRem4wjlVQiv9Z5qdYjer6rUOE=; b=OVszIwLS7H8jiqE+d2DA2xPOT8UD7FSvMFhYDyZYT7/CL1w2FW4FSln6Z6V63NeATU R/fFeOrvCXNGaIKFMIOAnuZpho1aiq2jCYiY5ZRKWQshFQv2EQUWDDKgpBCNwPI9CnD0 F/DTNpxO9rBgMZHeVDybxLXFqlVr1VIEwVCxQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784105733; x=1784710533; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=fzcA9TG2yqej8iZO6JRem4wjlVQiv9Z5qdYjer6rUOE=; b=e7uQklv4XLG9pheIKgp4WderUCofeQoiUncEB1nU81KIPjasusW5ErimzsmZmDm90L pBpWz5vc4cK2yKKmviytvQBfP88rsMrmL+yAXVs55Aou/gmFcIDNwAZ9mA7YB1UPdA1h +sG9Zw9nZS35SCbkaV2xtap6qsQB88TE6RuIwTvuJnq2pNng4lnbkRbnwNAIfYAE155y Yr1ijKAFWocABp0wY1v7sfxTr7jdZ1mkRYRh/039z944iveg4/2O+UiGHsQIQYuTCFXS yBMXoRt2dZVLxRcZYlCl1plsMkzcotJl2CiqxvSUqYQ/0CCcyR+00Y+eSSlqJ3KgCRbr GRIQ== X-Forwarded-Encrypted: i=1; AHgh+RppFcgq7lJa92Ofwb9wf04F4qNuaymeCZ3LcJJGgYaBVujgFCt7l3yn1JSPgt5d13lrbYsIra1KFBg=@vger.kernel.org X-Gm-Message-State: AOJu0YxKdqWRQK9cP4LuV8ztI3O8sRsR8H/t63V52mUiSVysMLM194Gx OKogziW1NPE0udmMTMpAwI7bwzuWxSKHcQKxn7WKelmadAbVnSfy3JvjQNI3VJMu3A== X-Gm-Gg: AfdE7cn740ZJ3lpXpaoF5sVuspfaRuAIe7veoI1T3L40jgwn/VP+gw7Eyw74WCYMLxT JnwX5DBytYbdA2l5RZyQUN/1a811i/JcenVRl7XoymmPaOMKrVEcEyftzugQ+K2S4+XZhyca+uh SUnQg9p0Xx7X+cP33reFQn4POrpkXCXauEWFtF8BSfucEiyTtNvqxrOAGlrR5nppf+dUjhnwPIz 0BLDLd9ffKBXxbRakzutEbnnY+W1lLLsaMzvmhTJ+L5wT+nvKXI8v8cKt8AWXEe+KUvmy1NWu75 wSUePd0DEVwFwT23pghkfsLGZNJ9IkSv4fCWzAHCR1EvdmOrWzsim2KdpPPFK9UdPYtqUNEsjvB g+qIa0IXfHWP3Orzv0paru0hE1s2mWMVjsNqbtKGvqE4jpfPEvJA1RXJqeqj0WmTwGh48WjG7cE XjknHxdSoDOPcEf3M6DZAgpKeuhzR41dXrAnwKC+qVPhTY16go/RTSXNpa56qEzGhjF1Xeng== X-Received: by 2002:a05:6a00:368d:b0:848:56ff:6ced with SMTP id d2e1a72fcca58-84a6723d613mr1884956b3a.8.1784105733495; Wed, 15 Jul 2026 01:55:33 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2a00:79e0:201d:8:47d7:4aa5:a6f8:2279]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84a4f819117sm2757491b3a.59.2026.07.15.01.55.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jul 2026 01:55:33 -0700 (PDT) From: Chen-Yu Tsai To: Bartosz Golaszewski , Greg Kroah-Hartman , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , "Rafael J. Wysocki" , Danilo Krummrich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno Cc: Wei Deng , Chen-Yu Tsai , linux-acpi@vger.kernel.org, driver-core@lists.linux.dev, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam , Alan Stern Subject: [PATCH v5 16/16] arm64: dts: mediatek: mt8188-geralt: Add WiFi/BT as M.2 E-key slot Date: Wed, 15 Jul 2026 16:53:46 +0800 Message-ID: <20260715085348.3457359-17-wenst@chromium.org> X-Mailer: git-send-email 2.55.0.141.g00534a21ce-goog In-Reply-To: <20260715085348.3457359-1-wenst@chromium.org> References: <20260715085348.3457359-1-wenst@chromium.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The MT8188 Geralt design features a chip-on-board WiFi/BT solution. This is a M.2 E-key WiFi/BT board layout directly inserted into the mainboard design. The connections to the rest of the board are almost the same as if it were a separate M.2 card. The only addition is the PMU_EN pin on the chip; on M.2 cards this would be tied to the primary power source. Model the chip-on-board WiFi/BT solution as a M.2 E-key slot with PCIe, USB and auxiliary signals. The PMU_EN pin, which enables the internal power controls and regulators, is modeled as a regulator fed by the pp3300_wlan regulator. Since power sequencing is now correctly modeled using the M.2 E-key slot, drop the "regulator-always-on" property one pp3300_wlan regulator. Also drop the comment in xhci2 saying "MT7921's power is controlled by PCIe". Also drop the voltage range on the pp3300_wlan regulator. This "regulator" is just a load switch and does not provide any regulation. Signed-off-by: Chen-Yu Tsai --- Changes since v2: - Drop default GPIO output state from kill pins pinconfig --- .../boot/dts/mediatek/mt8188-geralt.dtsi | 92 ++++++++++++++++++- 1 file changed, 88 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi index dee946309121..73b5c0fdeae6 100644 --- a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi @@ -88,13 +88,11 @@ pp3300_z1: regulator-pp3300-z1 { pp3300_wlan: regulator-pp3300-wlan { compatible = "regulator-fixed"; regulator-name = "pp3300_wlan"; - regulator-always-on; - regulator-min-microvolt = <3300000>; - regulator-max-microvolt = <3300000>; enable-active-high; gpio = <&pio 12 GPIO_ACTIVE_HIGH>; pinctrl-0 = <&wlan_en>; pinctrl-names = "default"; + /* load switch */ vin-supply = <&pp3300_z1>; }; @@ -161,6 +159,17 @@ ppvar_mipi_disp_avee: regulator-ppvar-mipi-disp-avee { vin-supply = <&pp5000_z1>; }; + /* PMU_EN pin controls internal regulators and power sequence */ + wlan_pmu: regulator-wlan-pmu { + compatible = "regulator-fixed"; + regulator-name = "wlan-pmu"; + enable-active-high; + gpio = <&pio 145 GPIO_ACTIVE_HIGH>; + pinctrl-0 = <&wlan_pmu_en>; + pinctrl-names = "default"; + vin-supply = <&pp3300_wlan>; + }; + reserved_memory: reserved-memory { #address-cells = <2>; #size-cells = <2>; @@ -195,6 +204,39 @@ adsp_dma_mem: memory@61000000 { no-map; }; }; + + wifi-bt-connector { + compatible = "pcie-m2-e-connector"; + pinctrl-names = "default"; + pinctrl-0 = <&m2_e_key_kill_pins>; + vpcie1v8-supply = <&mt6359_vcn18_ldo_reg>; + vpcie3v3-supply = <&wlan_pmu>; + w-disable1-gpios = <&pio 13 GPIO_ACTIVE_LOW>; + w-disable2-gpios = <&pio 14 GPIO_ACTIVE_LOW>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + /* PCIe for WiFi */ + port@0 { + reg = <0>; + + wifi_ep: endpoint { + remote-endpoint = <&pcie_ep>; + }; + }; + + /* USB for Bluetooth */ + port@2 { + reg = <2>; + + bt_ep: endpoint { + remote-endpoint = <&usb2_ep>; + }; + }; + }; + }; }; &adsp { @@ -659,6 +701,22 @@ &pcie { pinctrl-names = "default"; pinctrl-0 = <&pcie_pins>; status = "okay"; + + pcie@0 { + compatible = "pciclass,0604"; + reg = <0 0 0 0 0>; + device_type = "pci"; + num-lanes = <1>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + + port { + pcie_ep: endpoint { + remote-endpoint = <&wifi_ep>; + }; + }; + }; }; &pciephy { @@ -1002,6 +1060,13 @@ pins-bus { }; }; + m2_e_key_kill_pins: m2-e-key-kill-pins { + pins-kill { + pinmux = , + ; + }; + }; + mipi_disp_avdd_en: mipi-disp-avdd-en-pins { pins-en-ppvar-mipi-disp { pinmux = ; @@ -1174,6 +1239,13 @@ pins-bus { }; }; + wlan_pmu_en: wlan-pmu-en-pins { + pins-wlan-pmu-en { + pinmux = ; + output-low; + }; + }; + wlan_en: wlan-en-pins { pins-en-pp3300-wlan { pinmux = ; @@ -1417,10 +1489,22 @@ vdosys1_ep_ext: endpoint@1 { }; &xhci2 { - /* no power supply since MT7921's power is controlled by PCIe */ /* MT7921's USB BT has issues with USB2 LPM */ usb2-lpm-disable; status = "okay"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@1 { + reg = <1>; + + usb2_ep: endpoint { + remote-endpoint = <&bt_ep>; + }; + }; + }; }; #include -- 2.55.0.795.g602f6c329a-goog