Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753615AbcKUJZQ (ORCPT ); Mon, 21 Nov 2016 04:25:16 -0500 Received: from pandora.armlinux.org.uk ([78.32.30.218]:52164 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752731AbcKUJZO (ORCPT ); Mon, 21 Nov 2016 04:25:14 -0500 Date: Mon, 21 Nov 2016 09:24:45 +0000 From: Russell King - ARM Linux To: Tomasz Figa Cc: Arnd Bergmann , linux-arm-kernel , Krzysztof Kozlowski , Kukjin Kim , Javier Martinez Canillas , "linux-samsung-soc@vger.kernel.org" , linux-kernel , Bartlomiej Zolnierkiewicz , Ben Dooks , Sylwester Nawrocki , Lee Jones , Marek Szyprowski Subject: Re: [PATCH v2] ARM: Drop fixed 200 Hz timer requirement from Samsung platforms Message-ID: <20161121092445.GA1041@n2100.armlinux.org.uk> References: <1479453418-25314-1-git-send-email-krzk@kernel.org> <22757093.ejshJp9T7L@wuerfel> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 749 Lines: 15 On Mon, Nov 21, 2016 at 03:01:57PM +0900, Tomasz Figa wrote: > One thing to correct here is that the typical clock is PCLK, which is > derived from one of the PLLs and AFAIR is between 33-66 MHz on > s3c24xx. Technically you can drive the PWM block from an external > clock (12 MHz for some board-file based boards), but for simplicity > this functionality was omitted in the new PWM timer driver used for DT > boards (which worked fine with the PWM driven by PCLK). So that's a knowingly-made regression for s3c24xx then. Pretty disgusting developer behavior to do that, IMHO. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.