From patchwork Tue Feb 19 08:32:14 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manjunathappa, Prakash" X-Patchwork-Id: 2162271 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id CCE2F3FDF1 for ; Tue, 19 Feb 2013 08:35:04 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1U7ibg-0006X2-0Z; Tue, 19 Feb 2013 08:31:20 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1U7ibd-0006Wk-EG for linux-arm-kernel@lists.infradead.org; Tue, 19 Feb 2013 08:31:18 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id r1J8UwUG017318; Tue, 19 Feb 2013 02:30:59 -0600 Received: from DBDE71.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id r1J8Uqsl026631; Tue, 19 Feb 2013 14:00:52 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by DBDE71.ent.ti.com (172.24.170.149) with Microsoft SMTP Server id 14.1.323.3; Tue, 19 Feb 2013 14:00:52 +0530 Received: from ucmsshproxy.india.ext.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with SMTP id r1J8UjYH009290; Tue, 19 Feb 2013 14:00:46 +0530 Received: from symphony.india.ext.ti.com (unknown [192.168.247.13]) by ucmsshproxy.india.ext.ti.com (Postfix) with ESMTP id 5966D158002; Tue, 19 Feb 2013 14:00:45 +0530 (IST) Received: from ubuntu-psp-linux.india.ext.ti.com (ubuntu-psp-linux [192.168.247.46]) by symphony.india.ext.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id r1J8UfR05905; Tue, 19 Feb 2013 14:00:42 +0530 (IST) From: "Manjunathappa, Prakash" To: Subject: [PATCH] ARM: davinci: da850 evm: update clock rate for UART 1/2 DT nodes Date: Tue, 19 Feb 2013 14:02:14 +0530 Message-ID: <1361262734-8540-1-git-send-email-prakash.pm@ti.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130219_033117_551160_55CE7B50 X-CRM114-Status: UNSURE ( 9.97 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -7.6 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.153 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux@arm.linux.org.uk, devicetree-discuss@lists.ozlabs.org, nsekhar@ti.com, rob.herring@calxeda.com, grant.likely@secretlab.ca, "Manjunathappa, Prakash" , hs@denx.de, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DT kernel with latest of denx SPL U-boot boots with garbled UART logs. This is because in U-boot UART2 gets sourced by PLL0_SYSCLK2 configured for 150MHz. But later in kernel UART2 gets mapped to PLL1_SYSCLK2 and is configured for 132MHz not for 150MHz. PLL1 is configured for 264MHz to support mDDR on the EVM. That is memory controller driving mDDR can be configured for 150MHz and mDDR it self can operate at 132MHz. So override UART1 and UART2 DT node clock-frequency property with rate available on da850 EVM. Signed-off-by: Manjunathappa, Prakash --- arch/arm/boot/dts/da850-evm.dts | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index f712fb6..c359872 100644 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -22,9 +22,11 @@ status = "okay"; }; serial1: serial@1d0c000 { + clock-frequency = <132000000>; status = "okay"; }; serial2: serial@1d0d000 { + clock-frequency = <132000000>; status = "okay"; }; rtc0: rtc@1c23000 {