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 B8645C282D5 for ; Wed, 30 Jan 2019 08:43:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8855221473 for ; Wed, 30 Jan 2019 08:43:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730522AbfA3InC (ORCPT ); Wed, 30 Jan 2019 03:43:02 -0500 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:60792 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730314AbfA3ImX (ORCPT ); Wed, 30 Jan 2019 03:42:23 -0500 Received: by wens.csie.org (Postfix, from userid 1000) id E8E315FDC1; 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 08/10] arm64: dts: allwinner: h5: orange-pi-prime: Add CPU regulator supply Date: Wed, 30 Jan 2019 16:42:01 +0800 Message-Id: <20190130084203.25053-9-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 OrangePi Prime uses a Silergy SY8106A regulator to supply the CPU cores. The fixed voltage when I2C programmed regulation is not in action is slightly higher than 1.1V. The value in the device tree description is based on calculations of the resistor values from the schematics. 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. --- .../allwinner/sun50i-h5-orangepi-prime.dts | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts index b75ca4d7d001..e866a0734bb3 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts @@ -139,6 +139,10 @@ status = "okay"; }; +&cpu0 { + cpu-supply = <®_vdd_cpux>; +}; + &de { status = "okay"; }; @@ -222,6 +226,30 @@ status = "okay"; }; +&r_i2c { + status = "okay"; + + reg_vdd_cpux: regulator@65 { + compatible = "silergy,sy8106a"; + reg = <0x65>; + regulator-name = "vdd-cpux"; + silergy,fixed-microvolt = <1108474>; + /* + * The datasheet uses 1.1V as the minimum value of VDD-CPUX, + * however both the Armbian DVFS table and the official one + * have operating points with voltage under 1.1V, and both + * DVFS table are known to work properly at the lowest + * operating point. + * + * Use 1.0V as the minimum voltage instead. + */ + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1300000>; + regulator-boot-on; + regulator-always-on; + }; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins_a>; -- 2.20.1