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 190841E495; Thu, 3 Oct 2024 13:21:57 +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=1727961718; cv=none; b=frWYpGYxefhm7GDx5NrumtbbAzczahl0sV/3qS1LqfRfAKiLDO3VzoBcC3XTxtCrKcd8+SEVeWy+37rnhpISOJukk+Onm5lHeYh7Nov6ZqBg2NP8hsuV+v6A461gir8J9afHiGDaorl0/DzO3BhzzdG6WvVaJg7TXwDvi09P0hs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727961718; c=relaxed/simple; bh=qiTs3/DpFhvtQxE4+JoO9CH5m/R0yb7rKBnIKMULh+Q=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=KeF7Q+WjqtUzWvln8T7w52g3aTXtmTH7XzJi0NYLJ505O0Hvanr9EIgdejHrrjy2pgOxq+pEgkw+sjOFus+wXWJJSZlMSH8lFPbAhnl+/DFMyRxt5Sq7PhXujrqGi9IO80JWY7ZAOTye4DLIlBoNSN8/sLINQ8TdqHmHqFN+Tac= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jorM+WXD; 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="jorM+WXD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C947C4CEC5; Thu, 3 Oct 2024 13:21:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727961717; bh=qiTs3/DpFhvtQxE4+JoO9CH5m/R0yb7rKBnIKMULh+Q=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=jorM+WXD2k3FvhrejCv4xSG7eGppnQfw/XXgRZEGd0zouB46C3fDLpkt6bej+9841 mHkw+wqC4tXAcUGixQeY+fJMV8/OJHBqD84StHWsoBOoxC8BDkrWybf2/26Ib3x4Cb SSPu8tOYF5tGTKMx4wudSoPNInLojwrb9cMy3oEXczquPTch7dFl5cVygwY4PBgxZT OJ02X4D4sVRbLZC35s3FHsbfZBUAectpSjU0q1aukqbVOV4wF72QiuVBKAGJxl1dU0 QUrd/gH+ik1BBaNBcz8qnG+6ZXiiokAlY+HnB9dRttw8k3Q3dvQmlE4qH2JPlyO2Ly mkqIgbNHae2vg== Message-ID: <90b7f2a3-8ebe-44da-82b3-def6206cd399@kernel.org> Date: Thu, 3 Oct 2024 15:21:51 +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 v4 1/2] dt-bindings: i2c: snps,designware-i2c: declare bus capacitance and clk freq optimized To: Michael Wu , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jarkko Nikula , Andy Shevchenko , Mika Westerberg , Jan Dabros , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Morgan Chang , mvp.kutali@gmail.com References: <20241003111525.779410-1-michael.wu@kneron.us> <20241003111525.779410-2-michael.wu@kneron.us> Content-Language: en-US From: Krzysztof Kozlowski Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 03/10/2024 13:15, Michael Wu wrote: > Since there are no registers controlling the hardware parameters > IC_CAP_LOADING and IC_CLK_FREQ_OPTIMIZATION, their values can only be > declared in the device tree. > > snps,bus-capacitance-pf indicates the bus capacitance in picofarads (pF). > It affects the high and low pulse width of SCL line in high speed mode. > The legal values for this property are 100 and 400 only, and default > value is 100. This property corresponds to IC_CAP_LOADING. > > snps,clk-freq-optimized indicates whether the hardware reduce its > internal clock frequency by reducing the internal latency required to > generate the high period and low period of SCL line. This property > corresponds to IC_CLK_FREQ_OPTIMIZATION. > > The driver can calculate the high period count and low period count of > SCL line for high speed mode based on these two properties. > > Signed-off-by: Michael Wu > --- Reviewed-by: Krzysztof Kozlowski ---
This is an automated instruction, just in case, because many review tags are being ignored. If you know the process, you can skip it (please do not feel offended by me posting it here - no bad intentions intended). If you do not know the process, here is a short explanation: Please add Acked-by/Reviewed-by/Tested-by tags when posting new versions, under or above your Signed-off-by tag. Tag is "received", when provided in a message replied to you on the mailing list. Tools like b4 can help here. However, there's no need to repost patches *only* to add the tags. The upstream maintainer will do that for tags received on the version they apply. https://elixir.bootlin.com/linux/v6.5-rc3/source/Documentation/process/submitting-patches.rst#L577
Best regards, Krzysztof