From patchwork Tue Feb 2 10:58:57 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vineet Gupta X-Patchwork-Id: 577098 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id E0E7C140BCD for ; Tue, 2 Feb 2016 22:02:56 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aQYjX-0004hM-E8; Tue, 02 Feb 2016 11:02:55 +0000 Received: from us01smtprelay-2.synopsys.com ([198.182.47.9] helo=smtprelay.synopsys.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aQYjT-0004da-7W for linux-snps-arc@lists.infradead.org; Tue, 02 Feb 2016 11:02:54 +0000 Received: from dc8secmta1.synopsys.com (dc8secmta1.synopsys.com [10.13.218.200]) by smtprelay.synopsys.com (Postfix) with ESMTP id B48F424E1594; Tue, 2 Feb 2016 03:02:30 -0800 (PST) Received: from dc8secmta1.internal.synopsys.com (dc8secmta1.internal.synopsys.com [127.0.0.1]) by dc8secmta1.internal.synopsys.com (Service) with ESMTP id A860F27113; Tue, 2 Feb 2016 03:02:30 -0800 (PST) Received: from mailhost.synopsys.com (unknown [10.13.184.66]) by dc8secmta1.internal.synopsys.com (Service) with ESMTP id 8292C27102; Tue, 2 Feb 2016 03:02:30 -0800 (PST) Received: from mailhost.synopsys.com (localhost [127.0.0.1]) by mailhost.synopsys.com (Postfix) with ESMTP id 70D959B4; Tue, 2 Feb 2016 03:02:30 -0800 (PST) Received: from US01WEHTC2.internal.synopsys.com (us01wehtc2.internal.synopsys.com [10.12.239.237]) by mailhost.synopsys.com (Postfix) with ESMTP id 652999B2; Tue, 2 Feb 2016 03:02:30 -0800 (PST) Received: from IN01WEHTCB.internal.synopsys.com (10.144.199.106) by US01WEHTC2.internal.synopsys.com (10.12.239.237) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 2 Feb 2016 03:00:10 -0800 Received: from IN01WEHTCA.internal.synopsys.com (10.144.199.103) by IN01WEHTCB.internal.synopsys.com (10.144.199.105) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 2 Feb 2016 16:30:08 +0530 Received: from vineet-E7440.internal.synopsys.com (10.12.197.208) by IN01WEHTCA.internal.synopsys.com (10.144.199.243) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 2 Feb 2016 16:30:07 +0530 From: Vineet Gupta To: , , Noam Camus Subject: [PATCH 7/9] ARC: use fixed frequencies in arc_set_early_base_baud() Date: Tue, 2 Feb 2016 16:28:57 +0530 Message-ID: <1454410739-24444-8-git-send-email-vgupta@synopsys.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1454410739-24444-1-git-send-email-vgupta@synopsys.com> References: <1454410739-24444-1-git-send-email-vgupta@synopsys.com> MIME-Version: 1.0 X-Originating-IP: [10.12.197.208] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160202_030251_311230_044EF498 X-CRM114-Status: UNSURE ( 7.74 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [198.182.47.9 listed in list.dnswl.org] -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [198.182.47.9 listed in wl.mailspike.net] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vineet Gupta , linux-kernel@vger.kernel.org Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Alexey Brodkin UARTs usually have fixed clock so we're switching to use of constant values instead of something derived from core clock frequency. Among other things this will allow us to get rid of arc_{get|set}_core_freq() and switch to generic clock framework later on. Signed-off-by: Alexey Brodkin Signed-off-by: Vineet Gupta --- arch/arc/kernel/devtree.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c index 7e844fd8213f..e155126c79b1 100644 --- a/arch/arc/kernel/devtree.c +++ b/arch/arc/kernel/devtree.c @@ -28,14 +28,12 @@ unsigned int __init arc_early_base_baud(void) static void __init arc_set_early_base_baud(unsigned long dt_root) { - unsigned int core_clk = arc_get_core_freq(); - if (of_flat_dt_is_compatible(dt_root, "abilis,arc-tb10x")) - arc_base_baud = core_clk/3; + arc_base_baud = 166666667; /* Fixed 166.7MHz clk (TB10x) */ else if (of_flat_dt_is_compatible(dt_root, "snps,arc-sdp")) arc_base_baud = 33333333; /* Fixed 33MHz clk (AXS10x) */ else - arc_base_baud = core_clk; + arc_base_baud = 50000000; /* Fixed default 50MHz */ } #else #define arc_set_early_base_baud(dt_root)