From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E92F384228; Thu, 30 Jul 2026 08:24:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785399869; cv=none; b=nTx6FpJ4vXNHAVFA7UAK1dCkKUFVxtmaQaaNmSBgsGHostk//oHcSM5QrvNjIYlN1CU96U7W1x043VqSxX3ZzBytqod8O/lH4BGfQTHV8Va7kSpCUeQLGVswXWfdjEpcZn6zSEbogndTr0C2YPl2b3jqVK+bZ4I481ol/IC6DQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785399869; c=relaxed/simple; bh=1/FkdJ1XHDz3e+hgdrWmTesSkc9nWs1oUS/1VF1fnmQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VV8Uw77n9APaN0EqdwrMYu3QdQIwUTM05qUYLCjMJv9eeXvAYQy9GnwFL4qMSH4t5HwWAsEgrIYfMdZjIHBPDYPZFeelejsthAtixPOWhkQNjQyUHm7Zk+s4+2Gc2XzobB58iNX4ItgnKAlKqs3XPq7L1aUCqJUtZxGSkz6B/MY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=T52Barie; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="T52Barie" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A2851F00A3A; Thu, 30 Jul 2026 08:24:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785399868; bh=tcJa329W3/e6mUiBMBCdmFBaRvkhjOBRJYVoU6ghT5g=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=T52BarienqBSQp1RDkFSz8cteddwXzZFIyji1BBlWcXWtG/f95dqPzuI2LiOnxKTw gYGRtbUKScrl137mLfqJs+D6PmDbeCdeyzXz1cC0B8DWtj2t1MRJEV3ApVSiz9qT71 ipwnwlez/SESwfBCgZqpRZeImxqrUSX3RdNLzdKs1oTEMkoo93GJ5y+M1IYOpG80f8 bCXenr88Zs721qFkCZgSq00N5nED46PN2tUw6bKVjo67hh5tMSc6um5p+dHIk/0Jja /HszVFGCO7fkpxv90QkcwNRRgT6hP7BAy1MkdQG+prk9tneBSMqmc42/66xNr9srE1 hkVrJ8NXVd6Aw== Date: Thu, 30 Jul 2026 08:24:25 +0000 From: Yixun Lan To: Aurelien Jarno Cc: linux-kernel@vger.kernel.org, Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , "open list:RISC-V ARCHITECTURE:Keyword:riscv" , "open list:RISC-V SPACEMIT SoC Support:Keyword:spacemit" Subject: Re: [PATCH 0/6] riscv: dts: spacemit: fix maximum CPU core voltage for K1 boards Message-ID: <20260730082425-GKJ76518@kernel.org> References: <20260729150722.1598630-1-aurelien@aurel32.net> Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260729150722.1598630-1-aurelien@aurel32.net> On 17:02 Wed 29 Jul , Aurelien Jarno wrote: > The SpacemiT K1 based boards use the SpacemiT P1 PMIC. The buck1 and > buck2 voltage regulators supply the CPU core voltage. They are > configured with a maximum output voltage of 3.45V, while the highest > operating point requires only 1.050V. This means that a kernel bug, OPP > misconfiguration, or privileged userspace could request a voltage above > the safe operating limit, causing possible permanent CPU damage. > > This patch series set the maximum regulator voltage to 1.050V instead. > There is one patch per board in order to ease backporting to older > kernel versions. > > Aurelien Jarno (6): > riscv: dts: spacemit: k1-bananapi-f3: fix maximum CPU core voltage > riscv: dts: spacemit: k1-milkv-jupiter: fix maximum CPU core voltage > riscv: dts: spacemit: k1-orangepi-rv2: fix maximum CPU core voltage > riscv: dts: spacemit: k1-musepi-pro: fix maximum CPU core voltage > riscv: dts: spacemit: k1-orangepi-r2s: fix maximum CPU core voltage > riscv: dts: spacemit: k1-bananapi-cm6: fix maximum CPU core voltage > > arch/riscv/boot/dts/spacemit/k1-bananapi-cm6.dtsi | 4 ++-- > arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 4 ++-- > arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts | 4 ++-- > arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts | 4 ++-- > arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts | 4 ++-- > arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 4 ++-- > 6 files changed, 12 insertions(+), 12 deletions(-) > Reviewed-by: Yixun Lan -- Yixun Lan (dlan)