From patchwork Wed Apr 15 09:48:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Belloni X-Patchwork-Id: 11490811 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 72A08112C for ; Wed, 15 Apr 2020 09:50:54 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4797E206D9 for ; Wed, 15 Apr 2020 09:50:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="iLQ10gks" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4797E206D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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=NFgfhk+3iYnqwVmPe9d90+L5QUQnrQmB8tfj4oF9l04=; b=iLQ10gks+Mmd4B lil0vb9l2mnxe6ZZ0agi7IAnO0dtm25bbkfrGmk4LQzXEE0MI0tVTP1rcYt2KMNBZXoz9kEuz4+5Z Zmnlu0QVf7j+iMGjI5Jc7pXpqNzQwcxrHXCgGINKGdNotwuOf9RJ2VhTpUh8ABDVIqVYfoRDB8vyP zhlX4EqjFr+FXxZLBuzLKjhD8B70LcgESCNnKlqgRT0WDwz/zwp4bipfVp/H8ubSnqWQtmRcpS1NP slaQVLavVJkltnW2SE8yOk2l1OzZC8SfJeuQOy9neMybnM1Ethc2aVBNKCsPi1MuLF+mk5snX34DC OG2uDx/YSDTtkwzr+orQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jOeh0-0002GG-C2; Wed, 15 Apr 2020 09:50:50 +0000 Received: from relay7-d.mail.gandi.net ([217.70.183.200]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jOef9-0006Q6-Sx for linux-arm-kernel@lists.infradead.org; Wed, 15 Apr 2020 09:48:57 +0000 X-Originating-IP: 86.202.105.35 Received: from localhost (lfbn-lyo-1-9-35.w86-202.abo.wanadoo.fr [86.202.105.35]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id C1B7A20007; Wed, 15 Apr 2020 09:48:51 +0000 (UTC) From: Alexandre Belloni To: Daniel Lezcano Subject: [PATCH v2 5/9] clocksource/drivers/timer-atmel-tcb: rework 32khz clock selection Date: Wed, 15 Apr 2020 11:48:22 +0200 Message-Id: <20200415094826.132562-6-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200415094826.132562-1-alexandre.belloni@bootlin.com> References: <20200415094826.132562-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200415_024856_067516_4DB78BE0 X-CRM114-Status: GOOD ( 12.50 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [217.70.183.200 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kamel.bouhara@bootlin.com, Alexandre Belloni , devicetree@vger.kernel.org, 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 On all the supported SoCs, the slow clock is always ATMEL_TC_TIMER_CLOCK5, avoid looking it up and pass it directly to setup_clkevents. Signed-off-by: Alexandre Belloni --- drivers/clocksource/timer-atmel-tcb.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/clocksource/timer-atmel-tcb.c b/drivers/clocksource/timer-atmel-tcb.c index 7427b07495a8..b255a4a1a36b 100644 --- a/drivers/clocksource/timer-atmel-tcb.c +++ b/drivers/clocksource/timer-atmel-tcb.c @@ -346,7 +346,7 @@ static void __init tcb_setup_single_chan(struct atmel_tc *tc, int mck_divisor_id writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR); } -static const u8 atmel_tcb_divisors[5] = { 2, 8, 32, 128, 0, }; +static const u8 atmel_tcb_divisors[] = { 2, 8, 32, 128 }; static const struct of_device_id atmel_tcb_of_match[] = { { .compatible = "atmel,at91rm9200-tcb", .data = (void *)16, }, @@ -362,7 +362,6 @@ static int __init tcb_clksrc_init(struct device_node *node) u64 (*tc_sched_clock)(void); u32 rate, divided_rate = 0; int best_divisor_idx = -1; - int clk32k_divisor_idx = -1; int bits; int i; int ret; @@ -416,12 +415,6 @@ static int __init tcb_clksrc_init(struct device_node *node) unsigned divisor = atmel_tcb_divisors[i]; unsigned tmp; - /* remember 32 KiHz clock for later */ - if (!divisor) { - clk32k_divisor_idx = i; - continue; - } - tmp = rate / divisor; pr_debug("TC: %u / %-3u [%d] --> %u\n", rate, divisor, i, tmp); if (best_divisor_idx > 0) { @@ -467,7 +460,7 @@ static int __init tcb_clksrc_init(struct device_node *node) goto err_disable_t1; /* channel 2: periodic and oneshot timer support */ - ret = setup_clkevents(&tc, clk32k_divisor_idx); + ret = setup_clkevents(&tc, ATMEL_TC_TIMER_CLOCK5); if (ret) goto err_unregister_clksrc;