From patchwork Wed Jan 30 08:41:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 10787875 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E852D6C2 for ; Wed, 30 Jan 2019 08:43:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D4E9C2E52A for ; Wed, 30 Jan 2019 08:43:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C8FCF2E538; Wed, 30 Jan 2019 08:43:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 644272E52A for ; Wed, 30 Jan 2019 08:43:17 +0000 (UTC) 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=FRVhiQDSfXlOG7QMZGsCfPR+zARmq3N3imq4+PnGwCg=; b=S+kgd3oXCnKgxY jNp7gfsHrNGa7C9wZmNB3BeSy4eSTl4CUe7tKjt3KdxxbjF8YEkgD0m4g/u1LH0k1kZ+Q4LtacsB/ ur6Qt2lyMz5RMY3L7K6krKumSLihtwbWSiV5rF4JrBMPEEkIgC0yZ1rfM/5oaMuxVMNfvhKPeQN6E wD4UMyeYyNY5PvlTu3ku/wBK3yBt8szhd6lxLxBBWSSgI/osRVJ4LWCw63XRxGdkarrtarJs98lrY eALPGLxpwmCOyHgBdVtnLacHs4B7lQ1MPmPheQGXs41i4pQGpCxHyZU2wHWrV1Tt7hpzaPd39UMyu ro1jdO2cTntGln75Tl0g==; 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 1golSk-0002zT-T7; Wed, 30 Jan 2019 08:43:14 +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 1golRx-0002Cm-LU for linux-arm-kernel@lists.infradead.org; Wed, 30 Jan 2019 08:42:27 +0000 Received: by wens.csie.org (Postfix, from userid 1000) id D0AF35FD23; Wed, 30 Jan 2019 16:42:17 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard Subject: [PATCH 04/10] arm64: dts: allwinner: h5: nanopi-neo2: Add CPU regulator supply Date: Wed, 30 Jan 2019 16:41:57 +0800 Message-Id: <20190130084203.25053-5-wens@csie.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190130084203.25053-1-wens@csie.org> References: <20190130084203.25053-1-wens@csie.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190130_004226_528963_62822D18 X-CRM114-Status: GOOD ( 10.68 ) 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, Sergey Matyukevich , Andre Przywara , Chen-Yu Tsai , linux-kernel@vger.kernel.org, Emmanuel Vadot , linux-sunxi@googlegroups.com, Jagan Teki , Hauke Mehrtens , linux-arm-kernel@lists.infradead.org, Icenowy Zheng Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The Nanopi Neo 2 uses a fixed regulator to supply the CPU cores. The feedback resistor network can be changed by toggling a GPIO line. This is effectively a GPIO controlled regulator that can change between 1.1V and 1.3V. Cc: Icenowy Zheng Signed-off-by: Chen-Yu Tsai --- This patch is based on the schematics and has not been tested on an actual board. --- .../dts/allwinner/sun50i-h5-nanopi-neo2.dts | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts index cc268a69786c..08ffdfb78137 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts @@ -99,6 +99,26 @@ gpio = <&r_pio 0 2 GPIO_ACTIVE_HIGH>; /* PL2 */ status = "okay"; }; + + reg_vdd_cpux: vdd-cpux { + compatible = "regulator-gpio"; + regulator-name = "vdd-cpux"; + regulator-type = "voltage"; + regulator-boot-on; + regulator-always-on; + regulator-min-microvolt = <1100000>; + regulator-max-microvolt = <1300000>; + regulator-ramp-delay = <50>; /* 4ms */ + enable-gpios = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */ + gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL6 */ + gpios-states = <0x1>; + states = <1100000 0x0 + 1300000 0x1>; + }; +}; + +&cpu0 { + cpu-supply = <®_vdd_cpux>; }; &ehci0 {