Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752679AbcLFWeQ (ORCPT ); Tue, 6 Dec 2016 17:34:16 -0500 Received: from fllnx210.ext.ti.com ([198.47.19.17]:19755 "EHLO fllnx210.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751418AbcLFWeO (ORCPT ); Tue, 6 Dec 2016 17:34:14 -0500 Subject: Re: [PATCH 4/6] net: ethernet: ti: cpts: add ptp pps support To: Richard Cochran References: <20161128230428.6872-1-grygorii.strashko@ti.com> <20161128230428.6872-5-grygorii.strashko@ti.com> <20161130100519.GD28680@localhost.localdomain> <20161206180857.GA20680@localhost.localdomain> CC: "David S. Miller" , , Mugunthan V N , Sekhar Nori , , , Rob Herring , , Murali Karicheri , Wingman Kwok From: Grygorii Strashko Message-ID: Date: Tue, 6 Dec 2016 14:43:49 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <20161206180857.GA20680@localhost.localdomain> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [128.247.83.173] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 778 Lines: 26 On 12/06/2016 12:08 PM, Richard Cochran wrote: > On Wed, Nov 30, 2016 at 11:05:19AM +0100, Richard Cochran wrote: >> Can you adjust the frequency of the keystone devices in hardware? If >> so, then please implement it, and just disable PPS for the CPSW. >> >> The only reason I used the timecounter for frequency adjustment was >> because the am335x HW is broken. But this shouldn't hold back other >> newer HW without the same silicon flaws. > > I am talking here about the ADPLLLJ units. Are they usable on the > keystone? > > If so, please implement the frequency adjustment with them. > No, I think it's not impossible (at least as I know now). i'll drop this patch for now. By the way, I've tested am335 (BBB)+ HW_TS_PUSH + PWM. Seems works. -- regards, -grygorii