From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9725C1FE471; Mon, 20 Apr 2026 15:20:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776698451; cv=none; b=sTzlxOLYyrzBRKdgcaUlaan3pqNY5sQhFJfRbvRK48HQ3klhZFfadURHdds9belCQPpfVZNmr69TstVW/UUB4CPforhmtz8WvC0tLoMopCaGKWNSWzxRlhY3Y6vY+bAQrV0fy9jwTFZwjhH7h9BFFG2I8tJYadFtxG8wyGAgBj4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776698451; c=relaxed/simple; bh=nCoboZkHMjWLSJO0oket3z3iPfJsc7JH1NMHcq+p/1I=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=Pb71o33WXZxWw5g/pC1SFAqjG/fENS2x8iBW1fqQCQ8BoIF76LQlHNYG5DiTkpaNxfogfVBtkoWO1cdXzKHstWVVSyPJXk/KdQCLmlQKakyfLhfPVHqAWiNB/UZ7GFnpnLzIwJM8xP836ejEY+AfDUHndLTYQSp3gW61hTC4824= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UILCVWXA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UILCVWXA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05134C2BCB4; Mon, 20 Apr 2026 15:20:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776698451; bh=nCoboZkHMjWLSJO0oket3z3iPfJsc7JH1NMHcq+p/1I=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=UILCVWXAA/LtGo8aMZW/dYeEd/mgRDStiUGC9TKpznev6GY8DyoAiT/40eRYnLd7G aIXA5Lun+0esL4HyBFPBaKsfhLMU5KuhNsP/lLgh485gMMcEjXwnSkF5MmgWjNcyPg 44eztQG8vzHwAOmVuYsUFRpl+PDXNs1FBdH4x4Kf6ez8np7VIkug0jJR/tJtWUNEAu isYq7sJpqJ85cfOozZNTqENNbONdg3dO7hxcADq26p71RIREpflSivz8+Tr60VUt0D oJa+ja/pOpxGUqC1nFk9xI/gffO6CBtVJQ7jBmtkYivRfk4OMuLa6oiLFGM0cs8kyZ iTNbR5uerG5Yw== Message-ID: <2064b5bf-68f4-4769-b161-434e34d5b0fc@kernel.org> Date: Mon, 20 Apr 2026 17:20:47 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: exynos850: Add syscon-poweroff node From: Krzysztof Kozlowski To: Alexey Klimov , Sam Protsenko , Krzysztof Kozlowski Cc: linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Conor Dooley , Alim Akhtar References: <20260325-exynos850-poweroff-v1-1-34c19c06e74d@linaro.org> Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 20/04/2026 17:18, Krzysztof Kozlowski wrote: > On 20/04/2026 17:04, Alexey Klimov wrote: >> On Wed Mar 25, 2026 at 12:26 AM GMT, Alexey Klimov wrote: >>> Without poweroff node Exynos850-based board continue to draw current >>> (around ~60 mA with my test setup) after poweroff. Kernel also reports >>> different lockup problems and RCU stalls warnings continuosly after >>> last kernel messages about hardware being switched off. >>> Turns out we missed a write to PMU's PS_HOLD_CONTROL (PMU + 0x30c) >>> register that actually switches the SoC off. >>> >>> Add poweroff node that implements this. >>> >>> With this change the current draw after power off is in range of few >>> milliampers and lockup messages are no more. >>> >>> Signed-off-by: Alexey Klimov >>> --- >>> arch/arm64/boot/dts/exynos/exynos850.dtsi | 7 +++++++ >> >> Any feedback on this? > > You posted it right before closing tree, so this was waiting for a few > days for anyone to chime in and then tree is closed. It's merge window > now, so I don't review anything. Nothing new here... ... and the pull to SoC actually happened before. It's public, so you could check that. Best regards, Krzysztof