From patchwork Fri Mar 22 03:41:32 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Warren X-Patchwork-Id: 229879 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 8EC652C00A4 for ; Fri, 22 Mar 2013 14:41:50 +1100 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id DDB114A037; Fri, 22 Mar 2013 04:41:48 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mhibSLo2VN7j; Fri, 22 Mar 2013 04:41:48 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id BDB404A039; Fri, 22 Mar 2013 04:41:46 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id E0CC14A039 for ; Fri, 22 Mar 2013 04:41:44 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PPgkgpT1O08m for ; Fri, 22 Mar 2013 04:41:42 +0100 (CET) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from avon.wwwdotorg.org (avon.wwwdotorg.org [70.85.31.133]) by theia.denx.de (Postfix) with ESMTPS id 498334A037 for ; Fri, 22 Mar 2013 04:41:40 +0100 (CET) Received: from severn.wwwdotorg.org (unknown [192.168.65.5]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by avon.wwwdotorg.org (Postfix) with ESMTPS id AA75864F8; Thu, 21 Mar 2013 21:41:43 -0600 (MDT) Received: from dart.wwwdotorg.org (c-24-9-124-73.hsd1.co.comcast.net [24.9.124.73]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by severn.wwwdotorg.org (Postfix) with ESMTPSA id 2DFD4E40FD; Thu, 21 Mar 2013 21:41:38 -0600 (MDT) From: Stephen Warren To: u-boot@lists.denx.de, Tom Rini Date: Thu, 21 Mar 2013 21:41:32 -0600 Message-Id: <1363923692-12748-1-git-send-email-swarren@wwwdotorg.org> X-Mailer: git-send-email 1.7.10.4 X-NVConfidentiality: public X-Virus-Scanned: clamav-milter 0.96.5 at avon.wwwdotorg.org X-Virus-Status: Clean Subject: [U-Boot] [PATCH] README: document the requirements for CONFIG_SYS_HZ X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de CONFIG_SYS_HZ must be 1000, and get_timer() must therefore return mS. Document this. Signed-off-by: Stephen Warren --- README | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/README b/README index 7f2506a..1871ada 100644 --- a/README +++ b/README @@ -495,6 +495,12 @@ The following options need to be configured: exists, unlike the similar options in the Linux kernel. Do not set these options unless they apply! +- CPU timer options: + CONFIG_SYS_HZ + + The frequency of the timer returned by get_timer(). This value + MUST be 1000. + - Linux Kernel Interface: CONFIG_CLOCKS_IN_MHZ