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 E0D5DC43334 for ; Thu, 9 Jun 2022 14:50:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239332AbiFIOuR (ORCPT ); Thu, 9 Jun 2022 10:50:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230094AbiFIOuO (ORCPT ); Thu, 9 Jun 2022 10:50:14 -0400 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::223]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DDE2A64DC; Thu, 9 Jun 2022 07:50:10 -0700 (PDT) Received: (Authenticated sender: peter@korsgaard.com) by mail.gandi.net (Postfix) with ESMTPSA id B9B4B60007; Thu, 9 Jun 2022 14:50:04 +0000 (UTC) Received: from peko by dell.be.48ers.dk with local (Exim 4.94.2) (envelope-from ) id 1nzJU3-0028mh-Kr; Thu, 09 Jun 2022 16:50:03 +0200 From: Peter Korsgaard To: Srinivas Neeli Cc: , , , , , , , , , , , , , Subject: Re: [PATCH V6 2/2] rtc: zynqmp: Add calibration set and get support References: <20220609140833.1784738-1-srinivas.neeli@xilinx.com> <20220609140833.1784738-2-srinivas.neeli@xilinx.com> Date: Thu, 09 Jun 2022 16:50:03 +0200 In-Reply-To: <20220609140833.1784738-2-srinivas.neeli@xilinx.com> (Srinivas Neeli's message of "Thu, 9 Jun 2022 19:38:33 +0530") Message-ID: <87r13x28o4.fsf@dell.be.48ers.dk> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Srinivas" == Srinivas Neeli writes: > Zynqmp RTC controller has a calibration feature to compensate > time deviation due to input clock inaccuracy. > Set and get calibration API's are used for setting and getting > calibration value from the controller calibration register. > As per RTC spec default calibration value is 0x7FFF. Where do you see that? ug1085 rev2.2 still lists: Programming Sequences init rtc 1. Write the value 0019_8231h into the calibration register, CALIB_WRITE. -- Bye, Peter Korsgaard