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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 DD250C47257 for ; Thu, 7 May 2020 17:23:46 +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 AF73120A8B for ; Thu, 7 May 2020 17:23:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hU1O2Sdw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF73120A8B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=atomide.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.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=GnlYeW/dcv1g0zXEr3N0j60nL56X87QltNznCSlrg8o=; b=hU1O2SdwZG0qI6 ob+eFlIXIDTXc+iRdx5ngZFp1xCSfc+SKWfCEJvBr8l8quJLZQ1z6T75LDPHrGxKHpdkvcnoyuqM+ IJp1KDcFWJ9/XbN3ZwCdxsEifSYwOQpWH9Bi73ubE6BTIN+mWdCyw5bR9x7tpxqp9XPTZKyNPwDUm j3GSRP9PNd88btY/wXtLs3gf/9rkd7xzuDRA2a5UEOYeV1wIrqMb9DbSwHJwcErk7KNIDLmVBYK+4 LM8lXGuNDRMoiY/g2KvOmS/oHOtuu5LET9sclZt5Os2pMEPA7odGsgGkXcgzMTZ9QlH6bBfPkoRY3 Y+gAG60xSJZZj71eLm8Q==; 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 1jWkFO-00026x-B2; Thu, 07 May 2020 17:23:46 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWkFK-00025S-Km for linux-arm-kernel@lists.infradead.org; Thu, 07 May 2020 17:23:44 +0000 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 7F55C810D; Thu, 7 May 2020 17:24:29 +0000 (UTC) From: Tony Lindgren To: Daniel Lezcano , Thomas Gleixner Subject: [PATCH 01/14] clocksource/drivers/timer-ti-32k: Add support for initializing directly Date: Thu, 7 May 2020 10:23:17 -0700 Message-Id: <20200507172330.18679-2-tony@atomide.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200507172330.18679-1-tony@atomide.com> References: <20200507172330.18679-1-tony@atomide.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200507_102342_727518_91492DEE X-CRM114-Status: GOOD ( 14.27 ) 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: Rob Herring , Grygorii Strashko , Aaro Koskinen , Lokesh Vutla , Keerthy , Michael Turquette , Graeme Smecher , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, Tero Kristo , Stephen Boyd , devicetree@vger.kernel.org, Andreas Kemnade , "H. Nikolaus Schaller" , linux-omap@vger.kernel.org, Adam Ford , Brian Hutchinson , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Let's allow probing the 32k counter directly based on devicetree data to prepare for dropping the related legacy platform code. Let's only do this if the parent node is compatible with ti-sysc to make sure we have the related devicetree data available. Let's also show the 32k counter information before registering the clocksource, now we see it after the clocksource information which is a bit confusing. Cc: linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org Cc: Daniel Lezcano Cc: Grygorii Strashko Cc: Keerthy Cc: Lokesh Vutla Cc: Rob Herring Cc: Tero Kristo Cc: Thomas Gleixner Signed-off-by: Tony Lindgren --- drivers/clocksource/timer-ti-32k.c | 48 +++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/timer-ti-32k.c b/drivers/clocksource/timer-ti-32k.c --- a/drivers/clocksource/timer-ti-32k.c +++ b/drivers/clocksource/timer-ti-32k.c @@ -24,6 +24,7 @@ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com */ +#include #include #include #include @@ -76,6 +77,49 @@ static u64 notrace omap_32k_read_sched_clock(void) return ti_32k_read_cycles(&ti_32k_timer.cs); } +static void __init ti_32k_timer_enable_clock(struct device_node *np, + const char *name) +{ + struct clk *clock; + int error; + + clock = of_clk_get_by_name(np->parent, name); + if (IS_ERR(clock)) { + /* Only some SoCs have a separate interface clock */ + if (PTR_ERR(clock) == -EINVAL && !strncmp("ick", name, 3)) + return; + + pr_warn("%s: could not get clock %s %li\n", + __func__, name, PTR_ERR(clock)); + return; + } + + error = clk_prepare_enable(clock); + if (error) { + pr_warn("%s: could not enable %s: %i\n", + __func__, name, error); + return; + } +} + +static void __init ti_32k_timer_module_init(struct device_node *np, + void __iomem *base) +{ + void __iomem *sysc = base + 4; + + if (!of_device_is_compatible(np->parent, "ti,sysc")) + return; + + ti_32k_timer_enable_clock(np, "fck"); + ti_32k_timer_enable_clock(np, "ick"); + + /* + * Force idle module as wkup domain is active with MPU. + * No need to tag the module disabled for ti-sysc probe. + */ + writel_relaxed(0, sysc); +} + static int __init ti_32k_timer_init(struct device_node *np) { int ret; @@ -90,6 +134,7 @@ static int __init ti_32k_timer_init(struct device_node *np) ti_32k_timer.cs.flags |= CLOCK_SOURCE_SUSPEND_NONSTOP; ti_32k_timer.counter = ti_32k_timer.base; + ti_32k_timer_module_init(np, ti_32k_timer.base); /* * 32k sync Counter IP register offsets vary between the highlander @@ -104,6 +149,8 @@ static int __init ti_32k_timer_init(struct device_node *np) else ti_32k_timer.counter += OMAP2_32KSYNCNT_CR_OFF_LOW; + pr_info("OMAP clocksource: 32k_counter at 32768 Hz\n"); + ret = clocksource_register_hz(&ti_32k_timer.cs, 32768); if (ret) { pr_err("32k_counter: can't register clocksource\n"); @@ -111,7 +158,6 @@ static int __init ti_32k_timer_init(struct device_node *np) } sched_clock_register(omap_32k_read_sched_clock, 32, 32768); - pr_info("OMAP clocksource: 32k_counter at 32768 Hz\n"); return 0; } -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel