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 28F9FC43217 for ; Wed, 16 Nov 2022 13:46:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231137AbiKPNqg (ORCPT ); Wed, 16 Nov 2022 08:46:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229638AbiKPNqe (ORCPT ); Wed, 16 Nov 2022 08:46:34 -0500 Received: from mail-lj1-x22f.google.com (mail-lj1-x22f.google.com [IPv6:2a00:1450:4864:20::22f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 324A2B1D for ; Wed, 16 Nov 2022 05:46:33 -0800 (PST) Received: by mail-lj1-x22f.google.com with SMTP id d20so21850239ljc.12 for ; Wed, 16 Nov 2022 05:46:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=0GQzKSdbdY08aQnxjgmRAX9ISYKX+5S/k14tthAM/98=; b=xFMUIhvIFHg5Tn34kORJvbBfHtFyKxOAfWnGbAApobCKxddBhPvMwurHQEoSLsC7g4 7MxKbu1KUaYFfxLMSxyqU1WlhE4MyEaAIrtHKJoFFoLbMGznMEyFhn54X6ZeVgIC98ae IV0Iv2LLoMvhGxl9E9kiG0e03ZJMO9X/d/2Q6BeKooXfInFn4M/OEk5ZXN7IZZ8Mn3G0 2y3l3P8yNy3DvLgZXDQjeMWImGAqI50aJWS3d5fhG8pdSuFLSHaQP3znYP31Wzd4ZpmO GSP8liBdDoxlYoNe2sUJv/Rpit84bcBjLyThqrpMdjGXgbKWTC9+eX5huoCfD+rA+HsY y2lQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0GQzKSdbdY08aQnxjgmRAX9ISYKX+5S/k14tthAM/98=; b=c0ji8fNOggeOWSW4H4c6Mx7FoTFIKZ/WrjhlQcc8DaM76jW5PirpSRofkDCVfh96Bp EJQRMpHvr0MKDI0k/e++rUebagFixsQaAvWZftt4ZZCiYPDgQfXyThq18pSyvXb8SSOy qVI1IW/o+/QkbjMTxqzX098dzSI8++67CbY8MvHX2ranmuIh8iSkQU4lVI7bmyIzKEpH NaanLLMcawBYXxNgocMZxsSF3Kwbw+tktfTbgGyYfrcO1qgzYI331Na+TnI0P5IG7NQz PqgEXADQBvGXe6uhuXA28hGjhWXBQsa3/0R83odtAMDfNr6huPCJAxhQ9HBIZsq95l12 0Ybg== X-Gm-Message-State: ANoB5pmtZVW5yapLmVaSJV+XZ1KEaqBT09XMpKrDbCzto8B3jsX1fvL9 Z/X1OPIW08xdBLUtEqaFcMLASg== X-Google-Smtp-Source: AA0mqf40J9P2cpBUerrY741PqyhlkI8/X1XTnwuH9hqEvmuE3TEqJYGd0HnWI3XU7d6u2uADZngxEA== X-Received: by 2002:a2e:5008:0:b0:278:f31b:2770 with SMTP id e8-20020a2e5008000000b00278f31b2770mr7092342ljb.310.1668606391566; Wed, 16 Nov 2022 05:46:31 -0800 (PST) Received: from [10.10.15.130] ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id bs15-20020a05651c194f00b00277025ddc9esm3004691ljb.54.2022.11.16.05.46.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Nov 2022 05:46:31 -0800 (PST) Message-ID: <555fbc95-c002-7705-0639-9deb701ad513@linaro.org> Date: Wed, 16 Nov 2022 16:46:30 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: [PATCH v3 2/2] soc: qcom: Add Qualcomm Ramp Controller driver Content-Language: en-GB To: AngeloGioacchino Del Regno , agross@kernel.org Cc: andersson@kernel.org, konrad.dybcio@somainline.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, marijn.suijten@somainline.org, kernel@collabora.com References: <20221115154555.324437-1-angelogioacchino.delregno@collabora.com> <20221115154555.324437-3-angelogioacchino.delregno@collabora.com> From: Dmitry Baryshkov In-Reply-To: <20221115154555.324437-3-angelogioacchino.delregno@collabora.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15/11/2022 18:45, AngeloGioacchino Del Regno wrote: > The Ramp Controller is used to program the sequence ID for pulse > swallowing, enable sequence and linking sequence IDs for the CPU > cores on some Qualcomm SoCs. > > Signed-off-by: AngeloGioacchino Del Regno > --- > drivers/soc/qcom/Kconfig | 9 + > drivers/soc/qcom/Makefile | 1 + > drivers/soc/qcom/ramp_controller.c | 331 +++++++++++++++++++++++++++++ > 3 files changed, 341 insertions(+) > create mode 100644 drivers/soc/qcom/ramp_controller.c > I'd allow myself to re-ask the same questions here: Generic question. regarding this controller. If it is supposed to work close to DVCS, etc. Does ramp controller need any programming when changing speed and/or APC voltage? Is it necessary to turn ramp on and off during the runtime? -- With best wishes Dmitry