From nobody Mon Feb 9 08:28:57 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6520EC7EE2D for ; Sun, 4 Jun 2023 14:58:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232463AbjFDO6f (ORCPT ); Sun, 4 Jun 2023 10:58:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232454AbjFDO6a (ORCPT ); Sun, 4 Jun 2023 10:58:30 -0400 Received: from aposti.net (aposti.net [89.234.176.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB594CA; Sun, 4 Jun 2023 07:58:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1685890619; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+2jQ731Zfcr8a7AriSnn5w2+57JydZlg6MzkdjZ40CI=; b=Jwl6/7myr8aKTNwezlStlFEL8GK3I+qfNOu1sSjs6aGROjoJYuhMQxDqHY0Ly7XDOHL7MU Cw+5mMygNzVK62UL9OifymYfro4F3nkgEpuT74S2dpVU+uZpCwlSUVzP57EsMcCH5nJfXL socd+iReEqn4vKXO5/dJuMk42Xv/OaU= From: Paul Cercueil To: Thomas Bogendoerfer , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: "H . Nikolaus Schaller" , linux-mips@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, list@opendingux.net, Paul Cercueil Subject: [PATCH 7/9] MIPS: DTS: CI20: Enable support for WiFi / Bluetooth Date: Sun, 4 Jun 2023 16:56:40 +0200 Message-Id: <20230604145642.200577-8-paul@crapouillou.net> In-Reply-To: <20230604145642.200577-1-paul@crapouillou.net> References: <20230604145642.200577-1-paul@crapouillou.net> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam: Yes Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Wire the WiFi/Bluetooth chip properly in the Device Tree. - Provide it with the correct regulators and clocks; - Change the MMC I/O bus to 1.8V which seems to be enough; - Change the MMC I/O bus frequency to 25 MHz as 50 MHz causes errors; - Fix the Bluetooth powerdown GPIO being inverted and add reset GPIO; - Convert host-wakeup-gpios to IRQ. With these changes, the WiFi works properly with the latest firmware provided by linux-firmware. The Bluetooth does not work very well here, as I cannot get my wireless keyboard to pair; but it does detect it, and it does see the key presses when I type the pairing code. Signed-off-by: Paul Cercueil --- arch/mips/boot/dts/ingenic/ci20.dts | 88 ++++++++++++++++++++++++----- 1 file changed, 73 insertions(+), 15 deletions(-) diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingen= ic/ci20.dts index bdbd064c90e1..cec0caa2350c 100644 --- a/arch/mips/boot/dts/ingenic/ci20.dts +++ b/arch/mips/boot/dts/ingenic/ci20.dts @@ -97,10 +97,15 @@ ir: ir { gpios =3D <&gpe 3 GPIO_ACTIVE_LOW>; }; =20 - wlan0_power: fixedregulator-1 { + bt_power: fixedregulator-1 { compatible =3D "regulator-fixed"; =20 - regulator-name =3D "wlan0_power"; + regulator-name =3D "bt_power"; + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + regulator-settling-time-us =3D <1400>; + + vin-supply =3D <&vcc_50>; =20 gpio =3D <&gpb 19 0>; enable-active-high; @@ -116,6 +121,40 @@ otg_power: fixedregulator-2 { gpio =3D <&gpf 15 0>; enable-active-high; }; + + wifi_power: fixedregulator-4 { + compatible =3D "regulator-fixed"; + + regulator-name =3D "wifi_power"; + + /* + * Technically it's 5V, the WiFi chip has its own internal + * regulators; but the MMC/SD subsystem won't accept such a + * value. + */ + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + regulator-settling-time-us =3D <150000>; + + vin-supply =3D <&bt_power>; + }; + + vcc_33v: fixedregulator-5 { + compatible =3D "regulator-fixed"; + + regulator-name =3D "vcc_33v"; + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + regulator-always-on; + }; + + wifi_pwrseq: pwrseq { + compatible =3D "mmc-pwrseq-simple"; + reset-gpios =3D <&gpf 7 GPIO_ACTIVE_LOW>; + + clocks =3D <&rtc_dev>; + clock-names =3D "ext_clock"; + }; }; =20 &ext { @@ -161,24 +200,33 @@ &mmc0 { pinctrl-0 =3D <&pins_mmc0>; =20 cd-gpios =3D <&gpf 20 GPIO_ACTIVE_LOW>; + vmmc-supply =3D <&vcc_33v>; + vqmmc-supply =3D <&vcc_33v>; }; =20 &mmc1 { status =3D "okay"; =20 bus-width =3D <4>; - max-frequency =3D <50000000>; + max-frequency =3D <25000000>; + mmc-pwrseq =3D <&wifi_pwrseq>; + vmmc-supply =3D <&wifi_power>; + vqmmc-supply =3D <&wifi_io>; non-removable; =20 pinctrl-names =3D "default"; pinctrl-0 =3D <&pins_mmc1>; =20 - brcmf: wifi@1 { -/* reg =3D <4>;*/ - compatible =3D "brcm,bcm4330-fmac"; - vcc-supply =3D <&wlan0_power>; - device-wakeup-gpios =3D <&gpd 9 GPIO_ACTIVE_HIGH>; - shutdown-gpios =3D <&gpf 7 GPIO_ACTIVE_LOW>; + #address-cells =3D <1>; + #size-cells =3D <0>; + + wifi@1 { + compatible =3D "brcm,bcm4329-fmac"; + reg =3D <1>; + + interrupt-parent =3D <&gpd>; + interrupts =3D <9 IRQ_TYPE_EDGE_FALLING>; + interrupt-names =3D "host-wake"; }; }; =20 @@ -205,11 +253,20 @@ &uart2 { =20 bluetooth { compatible =3D "brcm,bcm4330-bt"; - reset-gpios =3D <&gpf 8 GPIO_ACTIVE_HIGH>; - vcc-supply =3D <&wlan0_power>; + + vbat-supply =3D <&bt_power>; + vddio-supply =3D <&wifi_io>; + + interrupt-parent =3D <&gpf>; + interrupts =3D <6 IRQ_TYPE_EDGE_RISING>; + interrupt-names =3D "host-wakeup"; + + clocks =3D <&rtc_dev>; + clock-names =3D "lpo"; + + reset-gpios =3D <&gpf 8 GPIO_ACTIVE_LOW>; device-wakeup-gpios =3D <&gpf 5 GPIO_ACTIVE_HIGH>; - host-wakeup-gpios =3D <&gpf 6 GPIO_ACTIVE_HIGH>; - shutdown-gpios =3D <&gpf 4 GPIO_ACTIVE_LOW>; + shutdown-gpios =3D <&gpf 4 GPIO_ACTIVE_HIGH>; }; }; =20 @@ -270,8 +327,9 @@ vcc_25: LDO5 { regulator-always-on; }; wifi_io: LDO6 { - regulator-min-microvolt =3D <2500000>; - regulator-max-microvolt =3D <2500000>; + regulator-min-microvolt =3D <1800000>; + regulator-max-microvolt =3D <1800000>; + regulator-settling-time-us =3D <150000>; inl-supply =3D <&vcc_33v>; }; cim_io_28: LDO7 { --=20 2.39.2