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 X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50D82C433E2 for ; Fri, 22 May 2020 15:41:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B16020756 for ; Fri, 22 May 2020 15:41:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730058AbgEVPlN (ORCPT ); Fri, 22 May 2020 11:41:13 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:45460 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727807AbgEVPlN (ORCPT ); Fri, 22 May 2020 11:41:13 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 125998029EB7; Fri, 22 May 2020 15:41:08 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8uWzmiuImIaK; Fri, 22 May 2020 18:41:07 +0300 (MSK) Date: Fri, 22 May 2020 18:41:05 +0300 From: Serge Semin To: Daniel Lezcano CC: Serge Semin , Thomas Gleixner , Thomas Bogendoerfer , Alexey Malahov , Maxim Kaurkin , Pavel Parkhomenko , Ramil Zaripov , Ekaterina Skachko , Vadim Vlasov , Alexey Kolotnikov , Paul Burton , Ralf Baechle , Arnd Bergmann , Alessandro Zummo , Alexandre Belloni , Rob Herring , , , , Subject: Re: [PATCH v5 0/8] clocksource: Fix MIPS GIC and DW APB Timer for Baikal-T1 SoC support Message-ID: <20200522154105.6gkutlgi2hxqjjzc@mobilestation> References: <20200521204818.25436-1-Sergey.Semin@baikalelectronics.ru> <211ab91d-6085-3073-1cbc-2300abade1b7@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <211ab91d-6085-3073-1cbc-2300abade1b7@linaro.org> X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, May 22, 2020 at 05:28:42PM +0200, Daniel Lezcano wrote: > On 21/05/2020 22:48, Serge Semin wrote: > > As for all Baikal-T1 SoC related patchsets, which need this, we replaced > > the DW APB Timer legacy plain text-based dt-binding file with DT schema. > > Similarly the MIPS GIC bindings file is also converted to DT schema seeing > > it also defines the MIPS GIC Timer binding. > > > > Aside from MIPS-specific r4k timer Baikal-T1 chip also provides a > > functionality of two another timers: embedded into the MIPS GIC timer and > > three external DW timers available over APB bus. But we can't use them > > before the corresponding drivers are properly fixed. First of all DW APB > > Timer shouldn't be bound to a single CPU, since as being accessible over > > APB they are external with respect to all possible CPUs. Secondly there > > might be more than just two DW APB Timers in the system (Baikal-T1 has > > three of them), so permit the driver to use one of them as a clocksource > > and the rest - for clockevents. Thirdly it's possible to use MIPS GIC > > timer as a clocksource so register it in the corresponding subsystem > > (the patch has been found in the Paul Burton MIPS repo so I left the > > original Signed-off-by attribute). Finally in the same way as r4k timer > > the MIPS GIC timer should be used with care when CPUFREQ config is enabled > > since in case of CM2 the timer counting depends on the CPU reference clock > > frequency while the clocksource subsystem currently doesn't support the > > timers with non-stable clock. > > > > This patchset is rebased and tested on the mainline Linux kernel 5.7-rc4: > > base-commit: 0e698dfa2822 ("Linux 5.7-rc4") > > tag: v5.7-rc4 > > Applied patch 1,2,4,5,6,7,8 > > Thanks! Great! Thanks. Am I right to expect the series in: git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git at the branch timers/core? -Sergey > > -- Daniel > > > -- > Linaro.org │ Open source software for ARM SoCs > > Follow Linaro: Facebook | > Twitter | > Blog