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 654661EF0B0; Fri, 10 Oct 2025 02:02:35 +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=1760061755; cv=none; b=I4d1VKqKVslc9xUhxsW5VDOjuSifqRwYNzNlrOJ+8+GYKpX0SKfrd0c7+XhB1rWJFI6bOoGNY6hFi9OsOZ6BJ7V0AbTv0hBGaUG+812iEkfEjtDENw3LvNnd9Ps0193wxOIqSZ7MU7BC4ncjVJofW2fegRhL8h/Wv0xL1IGFYB0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760061755; c=relaxed/simple; bh=/FJH5Vpkh52wcPrzkMVwtmP0OwkiIrTThiVP10A1rog=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=RIBdgk1lKbGeTQrkYCxgqlS/6cwlq9ExDUa7JhtYHEqjQIiPlJP5Zpeu8DwfX2FrZN9yHpMoZP40xwXm6hOf5Koc42cCbE322Qfrgo4bdA/3AQYCOmcenCX8K0mTQdL+Hi2w2s1OZQmrgNJ88rva+qZQAuWRahWvuqAtuo6Bk3A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jHC7gvou; 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="jHC7gvou" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 699A1C4CEE7; Fri, 10 Oct 2025 02:02:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760061755; bh=/FJH5Vpkh52wcPrzkMVwtmP0OwkiIrTThiVP10A1rog=; h=Date:Subject:To:References:From:In-Reply-To:From; b=jHC7gvou25hLkuFkaYMvrSDcsTsOOuX2swQ0g+a61BPmUTAcrgSfElEtfNqjdmfMY y4gpfwakVAU7B/sVavKKAOMdUrp7UK82S2xwfp2wcs3LO5MqL4Cz+KthkT2/iNQNVz Am0ltYCrwDrAbFQy+YnZoNwwwtlHPRqI+yeSlx1Xobhcmp4MqSskfe4Y5xBxWfonyo f5aDkIX3//GuEg4MUDmQ2gdE2E2fYOr5FXiwtpU9STt5Sca4n1wEItvYNlq+N/lSFV zitKHfCrASOOprtFjenQwd9QTTlaJKtCqm2IZ+Rr5trfiOZMDKv6ZFD5TUIBnbUjuO RcaeHY/9urQbQ== Message-ID: <3a960143-ad3e-4c3a-88a7-48e69576caed@kernel.org> Date: Fri, 10 Oct 2025 04:02:27 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] clk: samsung: exynos5420: Add support for power control registers To: Anand Moon , Sylwester Nawrocki , Chanwoo Choi , Alim Akhtar , Michael Turquette , Stephen Boyd , "open list:SAMSUNG SOC CLOCK DRIVERS" , "open list:COMMON CLK FRAMEWORK" , "moderated list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES" , open list References: <20250909180652.7130-1-linux.amoon@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 09/09/2025 20:06, Anand Moon wrote: > As per the Exynos5422 user manual, settings for the PWR_CTRL, PWR_CTRL2, > PWR_CTRL_KFC, and PWR_CNTL_KFC registers manage ARM clock down and up > configurations for idle and standby states. > > The Exynos5422's dynamic clock frequency down feature enables automatic > clock down when all CPU cores are in Wait For Event (WFE) or > Wait For Interrupt (WFI) states, utilizing this feature in standby > configurations. > > These modifications enhance the power management capabilities of the > Exynos542x by providing finer control over the ARM clock behavior in > various states. This seems reasonable, but I need more detailed tests and Tested-by. Best regards, Krzysztof