From patchwork Sun May 31 19:39:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 11580989 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 EE449139A for ; Sun, 31 May 2020 19:41:08 +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 CBBCC206A1 for ; Sun, 31 May 2020 19:41:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="FtW5/uJ0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CBBCC206A1 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+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=mLSthfQr+TwHd44CTOA84UlGDFDF5gb6DYQBWNieAt8=; b=FtW5/uJ0yEtP+y xV9Apvkgon1M6EDZ3GX6iiRz+5g2nPpXNwrmDTJPMcf50b5f9qHd/wnOk3VaY9vZ1Po92BPL1o+52 LVkKuHimU9Y/tCTVwKNkilTU5ZHwHUCT/vRfrsdW/44C/fHo2yY7yFKhqyEZ4ZXb/vcZyvnVsTP7C M/7WHzT9HO+fq/Hdgkhm6k5Zgj2g8SYYxlbhRVWfs+hliZ7vVvD9Rl6Cfr9d8ammDYl3vNvW7OSf7 do0uw2+wXM6THFZaLSp48Hhbc6TWjTCkU1SDdcED2Ln5gCnivpGeNLtEYGPq1A+C8l7vv3ykoWUCx AK4f4iykGtAU1ZqvpB+g==; 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 1jfTpP-0003k2-6x; Sun, 31 May 2020 19:41:03 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jfToc-00030W-JZ for linux-arm-kernel@lists.infradead.org; Sun, 31 May 2020 19:40:15 +0000 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 6B22E814F; Sun, 31 May 2020 19:41:04 +0000 (UTC) From: Tony Lindgren To: linux-omap@vger.kernel.org Subject: [PATCH 3/5] bus: ti-sysc: Ignore clockactivity unless specified as a quirk Date: Sun, 31 May 2020 12:39:39 -0700 Message-Id: <20200531193941.13179-4-tony@atomide.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200531193941.13179-1-tony@atomide.com> References: <20200531193941.13179-1-tony@atomide.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200531_124014_722563_23A164C6 X-CRM114-Status: GOOD ( 10.28 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [72.249.23.125 listed in list.dnswl.org] 0.0 SPF_NONE SPF: sender does not publish an SPF Record 0.0 SPF_HELO_NONE SPF: HELO does not publish an 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: Nishanth Menon , Tero Kristo , Grygorii Strashko , Dave Gerlach , Keerthy , Tomi Valkeinen , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, "Andrew F . Davis" , Peter Ujfalusi , Faiz Abbas , Laurent Pinchart , Greg Kroah-Hartman , Suman Anna , linux-arm-kernel@lists.infradead.org, Roger Quadros Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org We must ignore the clockactivity bit for most modules and not set it unless specified for the module with SYSC_QUIRK_USE_CLOCKACT. Otherwise the interface clock can be automatically gated constantly causing unexpected performance issues. Fixes: ae9ae12e9daa ("bus: ti-sysc: Handle clockactivity for enable and disable") Cc: Laurent Pinchart Cc: Tomi Valkeinen Signed-off-by: Tony Lindgren --- drivers/bus/ti-sysc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -989,10 +989,13 @@ static int sysc_enable_module(struct device *dev) regbits = ddata->cap->regbits; reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]); - /* Set CLOCKACTIVITY, we only use it for ick */ + /* + * Set CLOCKACTIVITY, we only use it for ick. And we only configure it + * based on the SYSC_QUIRK_USE_CLOCKACT flag, not based on the hardware + * capabilities. See the old HWMOD_SET_DEFAULT_CLOCKACT flag. + */ if (regbits->clkact_shift >= 0 && - (ddata->cfg.quirks & SYSC_QUIRK_USE_CLOCKACT || - ddata->cfg.sysc_val & BIT(regbits->clkact_shift))) + (ddata->cfg.quirks & SYSC_QUIRK_USE_CLOCKACT)) reg |= SYSC_CLOCACT_ICK << regbits->clkact_shift; /* Set SIDLE mode */