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 346D1C433F5 for ; Mon, 1 Nov 2021 09:47:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DCC260F24 for ; Mon, 1 Nov 2021 09:47:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233944AbhKAJt4 (ORCPT ); Mon, 1 Nov 2021 05:49:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:51420 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233981AbhKAJpV (ORCPT ); Mon, 1 Nov 2021 05:45:21 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BD037610E5; Mon, 1 Nov 2021 09:30:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1635759003; bh=16yzyGvnnqZ6gTct0rBZr0kOGbzeZz/KOZr72UBuYeM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UaMoyEtAZ1PQHzExzg8wX87nnMsj0ma62wA+3W5vpekmrM5Wzii8aK5G6SHtU4Zr4 ZAm6Y3B6ZEwl0O0D2n12SizQ61xrDfahiqARGeVBVs+6gJ8UkXvGNrDy2SCeqBvUdF /qzD4SgHItcaEaR6R66HRSF365pGVmp7s4GPuqlw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Frieder Schrempf , Shawn Guo Subject: [PATCH 5.14 041/125] arm64: dts: imx8mm-kontron: Make sure SOC and DRAM supply voltages are correct Date: Mon, 1 Nov 2021 10:16:54 +0100 Message-Id: <20211101082540.998172876@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211101082533.618411490@linuxfoundation.org> References: <20211101082533.618411490@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Frieder Schrempf commit 82a4f329b133ad0de66bee12c0be5c67bb8aa188 upstream. 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 Signed-off-by: Shawn Guo Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi @@ -91,10 +91,12 @@ 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 { @@ -111,7 +113,7 @@ 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; };