Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754721Ab3HEGjG (ORCPT ); Mon, 5 Aug 2013 02:39:06 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:16882 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753923Ab3HEGjD (ORCPT ); Mon, 5 Aug 2013 02:39:03 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Sun, 04 Aug 2013 23:39:03 -0700 Message-ID: <51FF487F.6000007@nvidia.com> Date: Mon, 5 Aug 2013 12:08:55 +0530 From: Prashant Gaikwad User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121011 Thunderbird/16.0.1 MIME-Version: 1.0 To: Stephen Warren CC: Tuomas Tynkkynen , Peter De Schrijver , "mturquette@linaro.org" , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-usb@vger.kernel.org" Subject: Re: [PATCH] clk: tegra30: Don't wait for PLL_U lock bit References: <1375292551-7933-1-git-send-email-ttynkkynen@nvidia.com> <1375292551-7933-2-git-send-email-ttynkkynen@nvidia.com> <51F97BEA.7040006@wwwdotorg.org> In-Reply-To: <51F97BEA.7040006@wwwdotorg.org> X-NVConfidentiality: public Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1267 Lines: 33 On Thursday 01 August 2013 02:34 AM, Stephen Warren wrote: > On 07/31/2013 11:42 AM, Tuomas Tynkkynen wrote: >> The lock bit on PLL_U does not seem to be working correctly and >> sometimes never gets set when waiting for the PLL to come up. >> Remove the TEGRA_PLL_USE_LOCK flag to use a constant delay. > Peter, Prashant, > > I think you said that the lock bits should work on Tegra30 (albeit they > don't on Tegra20)? Can you remind me if the do/don't? > > If Peter and Prashant are OK with this patch, feel free to take my ack. Hi Tuomas, Sorry for the delayed response. Please make sure that avdd_usb_pll regulator is enabled before enabling PLLU and utmip parameters are configured properly. If this this regulator is not enabled then you will get this kind of timeout when enabling PLLU. Thanks, Prashant > -- > To unsubscribe from this list: send the line "unsubscribe linux-tegra" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/