From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92444C43387 for ; Wed, 9 Jan 2019 15:03:54 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 63058206BB for ; Wed, 9 Jan 2019 15:03:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Jx+aO+on" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 63058206BB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=csie.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=iUS6a1R/io8IHi6OAbOMF9nQmRAE9hHMPbMXfvUIfEM=; b=Jx+aO+onJNBR0B z+veCl/kaZdabc07o8CJbq0U6Q8sIvGBsrYf9iAK4k2VWV/bnr1HZNsY7D6l7sXcfU3T2C/nRL7jR wM0cxTzzNqzoqfYsoEp9E8NN8fKbVpImnzX4e09npPbwTKLF26ifa+DMrZHVUknneS8emIzEmTQHq /sNABhfsdeCvYwvAqQ0uVV3xqNRSINOthDXHzzLM2bBs61iz+fo9JwW4IFTv43CiNVDVBGtgXbFP2 wqVm0mIQcmTTgUA+aoUW4H0AchIIGwSgYjJzWnb666QgBfLhV9RhyZwUS/dTcEsgOEzyAmgOXAirW 9wuscLuKFnvh2Tc0PsJg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ghFOP-00027H-18; Wed, 09 Jan 2019 15:03:41 +0000 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76] helo=wens.csie.org) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1ghFNo-0001WX-Qf for linux-arm-kernel@lists.infradead.org; Wed, 09 Jan 2019 15:03:07 +0000 Received: by wens.csie.org (Postfix, from userid 1000) id 523375FCE1; Wed, 9 Jan 2019 23:03:00 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard Subject: [PATCH 3/5] ARM: dts: sun8i: r40: bananapi-m2-ultra: Fix WiFi regulator definitions Date: Wed, 9 Jan 2019 23:02:55 +0800 Message-Id: <20190109150257.12602-4-wens@csie.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190109150257.12602-1-wens@csie.org> References: <20190109150257.12602-1-wens@csie.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190109_070304_999592_1EAD71E9 X-CRM114-Status: GOOD ( 13.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Chen-Yu Tsai , linux-sunxi@googlegroups.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The design of the Bananapi M2 Ultra has both DLDO1 and DLDO2 regulators provide power to the WiFi+BT module, which is based on the Broadcom BCM43438 or BCM43430 chip. Each regulator output from the PMIC can supply up to 200 mA. The datasheet of the chip suggests a maximum power draw of up to 360 mA when transmitting, thus requiring two outputs from the PMIC to handle the load. However the device tree only references one of them, leaving the other unused and possibly turned off. This patch marks both as always-on, since we don't have a proper binding to specify two regulators as "bound together". The name and constraints of DLDO2 are also added. Fixes: da7ac948fa93 ("ARM: dts: sun8i: Add board dts file for Banana Pi M2 Ultra") Signed-off-by: Chen-Yu Tsai --- arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts index 438b7b44dab3..1a6794e63b90 100644 --- a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts +++ b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts @@ -250,12 +250,27 @@ regulator-name = "vcc-wifi-io"; }; +/* + * Our WiFi chip needs both DLDO2 and DLDO3 to be powered at the same + * time, with the two being in sync, to be able to meet maximum power + * consumption during transmits. Since this is not really supported + * right now, just use the two as always on, and we will fix it later. + */ + ®_dldo2 { + regulator-always-on; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; regulator-name = "vcc-wifi"; }; +®_dldo3 { + regulator-always-on; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-name = "vcc-wifi-2"; +}; + ®_dldo4 { regulator-min-microvolt = <2500000>; regulator-max-microvolt = <2500000>; -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel