From patchwork Mon Apr 15 15:08:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Belloni X-Patchwork-Id: 10900997 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0ABE514DB for ; Mon, 15 Apr 2019 15:09:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E158A2888C for ; Mon, 15 Apr 2019 15:09:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D254B288BE; Mon, 15 Apr 2019 15:09:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 81AFB2888C for ; Mon, 15 Apr 2019 15:09:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=s5bsVhSDYsT3YFjthYHCyAa7pmc0sTiJ0w7PAW8bGwY=; b=rfP4KEbekTT0lg VrImXfthvB6u5ZpQMrCagj3djDJeyu2dJWvXkJ+AKqOpmrGLXHIY0+ywuSfrbRQH10WihTebIIt8B QFEgcpuPkStuQk/Y+ocyYoMShyt9hvQY3X0ciyOiGJV1x90qQqm8g2KkXuFr1g8v6Dy+3l9UrK/CF MWY/QDv7XrbWSdSsrGagru7u9Tw1i2YeK7wFCi4pGD7gpV/G1F2cWtQ2B+DlGNAfMSuuWz8iwy9B0 b8oqElJ78HMpFbt7VFm9n/Bu7yjTE45JmkBLlo+PD3t0vp9K1bjBW5uyTj8wz67OS702TJMpimJue +PDqGfP3Zs6H7KwDAqEQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hG3Ei-00023j-3x; Mon, 15 Apr 2019 15:09:32 +0000 Received: from relay9-d.mail.gandi.net ([217.70.183.199]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hG3EU-0001mC-1F for linux-arm-kernel@lists.infradead.org; Mon, 15 Apr 2019 15:09:19 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190415_080918_225038_B6B97422 X-CRM114-Status: UNSURE ( 9.99 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexandre Belloni , Alexander Dahl , Sebastian Andrzej Siewior , linux-kernel@vger.kernel.org, Thomas Gleixner , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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