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=-9.0 required=3.0 tests=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 02999C282D6 for ; Wed, 30 Jan 2019 08:43:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C956121473 for ; Wed, 30 Jan 2019 08:43:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730277AbfA3ImV (ORCPT ); Wed, 30 Jan 2019 03:42:21 -0500 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:60702 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727430AbfA3ImU (ORCPT ); Wed, 30 Jan 2019 03:42:20 -0500 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 Cc: linux-sunxi@googlegroups.com, Icenowy Zheng , Andre Przywara , Emmanuel Vadot , Jagan Teki , Sergey Matyukevich , Hauke Mehrtens , Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org 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 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 { -- 2.20.1