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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D307C433F5 for ; Fri, 15 Oct 2021 12:49:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 373E560ED4 for ; Fri, 15 Oct 2021 12:49:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239089AbhJOMv1 (ORCPT ); Fri, 15 Oct 2021 08:51:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60068 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239054AbhJOMvY (ORCPT ); Fri, 15 Oct 2021 08:51:24 -0400 Received: from mail.fris.de (mail.fris.de [IPv6:2a01:4f8:c2c:390b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21FC8C061570; Fri, 15 Oct 2021 05:49:18 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id DEB32BFC0F; Fri, 15 Oct 2021 14:49:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fris.de; s=dkim; t=1634302156; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=b3WwxseBuxxlm1edv2TBXG5FbEqMfGNzQKzPCy8l4AI=; b=T3B2ZHCYIOEjYoN2Fy5rz6oP3gJ3f7yXxiTpjRyXgUuZSaeRw2XJysmckQs/RE68ttVt8M XbyiL/FzBvzoN3KkXeiJENFFhDk8uLygFUt4VdIRkSN5RlJ8j/nSIa0rgBdwTBftC6HPjF EsjSTmkNPZw2NYzjqp29n++NzP2l4wJ5Byg4K9SQgWEitSop+Ku87Y9OwbicY3MscaO5Wf rdVjrsYgbWlekTIcfnue1mdsHm47FZELmLRnbPGsi+C1APLW7gOUp8wNwafXGwjm+eHcfY r/VyFLzjvhfWaP5Tg0Ktds3LFkMQZhv3SGUya+6rXEvJIX68mzI7hc61rgKfbQ== From: Frieder Schrempf To: devicetree@vger.kernel.org, Frieder Schrempf , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Sascha Hauer , Shawn Guo Cc: stable@vger.kernel.org, Fabio Estevam , Heiko Thiery , NXP Linux Team , Pengutronix Kernel Team Subject: [PATCH v2 2/6] arm64: dts: imx8mm-kontron: Make sure SOC and DRAM supply voltages are correct Date: Fri, 15 Oct 2021 14:48:36 +0200 Message-Id: <20211015124841.28226-3-frieder@fris.de> In-Reply-To: <20211015124841.28226-1-frieder@fris.de> References: <20211015124841.28226-1-frieder@fris.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Frieder Schrempf It looks like the voltages for the SOC and DRAM supply weren't properly validated before. The datasheet and uboot-imx code tells us that VDD_SOC should be 800 mV in suspend and 850 mV in run mode. VDD_DRAM should be 950 mV for DDR clock frequencies of up to 1.5 GHz. Let's fix these values to make sure the voltages are within the required range. Fixes: 8668d8b2e67f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf --- Changes in v2: * Fix the commit ref in the Fixes tag * Improve commit message --- arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi index 6eacc32bc95e..4df45b5e5f6e 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi @@ -92,10 +92,12 @@ regulators { reg_vdd_soc: BUCK1 { regulator-name = "buck1"; regulator-min-microvolt = <800000>; - regulator-max-microvolt = <900000>; + regulator-max-microvolt = <850000>; regulator-boot-on; regulator-always-on; regulator-ramp-delay = <3125>; + nxp,dvs-run-voltage = <850000>; + nxp,dvs-standby-voltage = <800000>; }; reg_vdd_arm: BUCK2 { @@ -112,7 +114,7 @@ reg_vdd_arm: BUCK2 { reg_vdd_dram: BUCK3 { regulator-name = "buck3"; regulator-min-microvolt = <850000>; - regulator-max-microvolt = <900000>; + regulator-max-microvolt = <950000>; regulator-boot-on; regulator-always-on; }; -- 2.33.0