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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 044E4C10F12 for ; Mon, 15 Apr 2019 15:09:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D19F420818 for ; Mon, 15 Apr 2019 15:09:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727795AbfDOPJw (ORCPT ); Mon, 15 Apr 2019 11:09:52 -0400 Received: from relay9-d.mail.gandi.net ([217.70.183.199]:47357 "EHLO relay9-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727648AbfDOPJS (ORCPT ); Mon, 15 Apr 2019 11:09:18 -0400 X-Originating-IP: 109.212.207.226 Received: from localhost (alyon-652-1-176-226.w109-212.abo.wanadoo.fr [109.212.207.226]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 745C3FF804; Mon, 15 Apr 2019 15:09:15 +0000 (UTC) From: Alexandre Belloni To: Daniel Lezcano Cc: Thomas Gleixner , Nicolas Ferre , Alexander Dahl , Sebastian Andrzej Siewior , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Alexandre Belloni Subject: [PATCH v2 4/9] ARM: at91: Implement clocksource selection Date: Mon, 15 Apr 2019 17:08:51 +0200 Message-Id: <20190415150856.9384-5-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190415150856.9384-1-alexandre.belloni@bootlin.com> References: <20190415150856.9384-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allow selecting and unselecting the PIT clocksource driver so it doesn't have to be compiled when unused. Signed-off-by: Alexandre Belloni --- arch/arm/mach-at91/Kconfig | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 903f23c309df..da1d97a06c53 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -107,6 +107,29 @@ config SOC_AT91SAM9 AT91SAM9X35 AT91SAM9XE +comment "Clocksource driver selection" + +config ATMEL_CLOCKSOURCE_PIT + bool "Periodic Interval Timer (PIT) support" + depends on SOC_AT91SAM9 || SOC_SAMA5 + default SOC_AT91SAM9 || SOC_SAMA5 + select ATMEL_PIT + help + Select this to get a clocksource based on the Atmel Periodic Interval + Timer. It has a relatively low resolution and the TC Block clocksource + should be preferred. + +config ATMEL_CLOCKSOURCE_TCB + bool "Timer Counter Blocks (TCB) support" + default SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAMA5 + select ATMEL_TCB_CLKSRC + help + Select this to get a high precision clocksource based on a + TC block with a 5+ MHz base clock rate. + On platforms with 16-bit counters, two timer channels are combined + to make a single 32-bit timer. + It can also be used as a clock event device supporting oneshot mode. + config HAVE_AT91_UTMI bool -- 2.20.1