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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87A30C001DE for ; Sun, 9 Jul 2023 11:33:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230188AbjGILd1 (ORCPT ); Sun, 9 Jul 2023 07:33:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41986 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233020AbjGILdV (ORCPT ); Sun, 9 Jul 2023 07:33:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21ABC95 for ; Sun, 9 Jul 2023 04:33:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B3B9160BA4 for ; Sun, 9 Jul 2023 11:33:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C295BC433C8; Sun, 9 Jul 2023 11:33:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1688902400; bh=WGshtL4AUNAYowDOlv7UohyIEj9uIHjV7Y4Gf0dv4C4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sOljEmx8tH51QwVhCGtOx1ndJRDHzm0fkt6htcVoK7014MsaG3unnb4tOEn7An9Ct /mKz+RFlckc56oetqzCP8AellUbj7XjSl094FZ4GBIiFhLAcfuDfi6wl7YFS+K9GzZ ct8JcqKRTe8T6GUh1QqnVQJl8a3d/c9we85uNn1g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paul Cercueil , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 6.3 336/431] MIPS: DTS: CI20: Raise VDDCORE voltage to 1.125 volts Date: Sun, 9 Jul 2023 13:14:44 +0200 Message-ID: <20230709111459.049673931@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230709111451.101012554@linuxfoundation.org> References: <20230709111451.101012554@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Paul Cercueil [ Upstream commit 944520f85d5b1fb2f9ea243be41f9c9af3d4cef3 ] Commit 08384e80a70f ("MIPS: DTS: CI20: Fix ACT8600 regulator node names") caused the VDDCORE power supply (regulated by the ACT8600's DCDC1 output) to drop from a voltage of 1.2V configured by the bootloader, to the 1.1V set in the Device Tree. According to the documentation, the VDDCORE supply should be between 0.99V and 1.21V; both values are therefore within the supported range. However, VDDCORE being 1.1V results in the CI20 being very unstable, with corrupted memory, failures to boot, or reboots at random. The reason might be succint drops of the voltage below the minimum required. Raising the minimum voltage to 1.125 volts seems to be enough to address this issue, while still keeping a relatively low core voltage which helps for power consumption and thermals. Fixes: 08384e80a70f ("MIPS: DTS: CI20: Fix ACT8600 regulator node names") Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/boot/dts/ingenic/ci20.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts index eac6b3411b5f7..c0f6c4d3618e1 100644 --- a/arch/mips/boot/dts/ingenic/ci20.dts +++ b/arch/mips/boot/dts/ingenic/ci20.dts @@ -240,8 +240,8 @@ act8600: act8600@5a { regulators { vddcore: DCDC1 { - regulator-min-microvolt = <1100000>; - regulator-max-microvolt = <1100000>; + regulator-min-microvolt = <1125000>; + regulator-max-microvolt = <1125000>; vp1-supply = <&vcc_33v>; regulator-always-on; }; -- 2.39.2