From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9B35D210EA; Wed, 20 Dec 2023 11:02:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 919B71FB; Wed, 20 Dec 2023 03:03:40 -0800 (PST) Received: from e129166.arm.com (unknown [10.57.82.217]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id CC9DC3F5A1; Wed, 20 Dec 2023 03:02:52 -0800 (PST) From: Lukasz Luba To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com, linux-arm-kernel@lists.infradead.org, sboyd@kernel.org, nm@ti.com, linux-samsung-soc@vger.kernel.org, daniel.lezcano@linaro.org, rafael@kernel.org, viresh.kumar@linaro.org, krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com, m.szyprowski@samsung.com, xuewen.yan94@gmail.com, mhiramat@kernel.org, qyousef@layalina.io, wvw@google.com Subject: [RFC PATCH 0/2] Introduce runtime modifiable Energy Model Date: Wed, 20 Dec 2023 11:03:37 +0000 Message-Id: <20231220110339.1065505-1-lukasz.luba@arm.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi all, This is a follow-up patch aiming to show the users of the proposed runtime modifiable Energy Model framework. The patches and discussion is available here [1]. I didn't wanted to add more complexity in that already big EM patch set and planned to add more users later. This patch set is one of the first user. I have talked about the chip binning in a few conferences and the need to update the EM after boot. This Exynos is one of the platforms which adjust voltage after the EM is registered. This is perfectly fine and alloed in the kernel, even from a module so very late. The EM framework should just allow to modify the power values after that. This patch set will have to wait for merging of the dependet main EM change. Regards, Lukasz Luba [1] https://lore.kernel.org/lkml/20231129110853.94344-1-lukasz.luba@arm.com/ Lukasz Luba (2): OPP: Add API to update EM after adjustment of voltage for OPPs soc: samsung: exynos-asv: Update Energy Model after adjusting voltage drivers/opp/of.c | 69 ++++++++++++++++++++++++++++++++ drivers/soc/samsung/exynos-asv.c | 10 ++++- include/linux/pm_opp.h | 6 +++ 3 files changed, 84 insertions(+), 1 deletion(-) -- 2.25.1