diff options
Diffstat (limited to 'packages/linux/linux-omap2-git/beagleboard/omap3-jitter.patch')
| -rw-r--r-- | packages/linux/linux-omap2-git/beagleboard/omap3-jitter.patch | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/packages/linux/linux-omap2-git/beagleboard/omap3-jitter.patch b/packages/linux/linux-omap2-git/beagleboard/omap3-jitter.patch new file mode 100644 index 0000000000..2e0dfd9f13 --- /dev/null +++ b/packages/linux/linux-omap2-git/beagleboard/omap3-jitter.patch @@ -0,0 +1,95 @@ +From linux-omap-owner@vger.kernel.org Tue Jun 24 09:24:30 2008 +Received: from localhost + ([127.0.0.1] helo=dominion ident=koen) + by dominion.dominion.void with esmtp (Exim 4.63) + (envelope-from <linux-omap-owner@vger.kernel.org>) + id 1KB2tC-0005XT-Mj + for koen@localhost; Tue, 24 Jun 2008 09:24:30 +0200 +Received: from xs.service.utwente.nl [130.89.5.250] + by dominion with POP3 (fetchmail-6.3.6) + for <koen@localhost> (single-drop); Tue, 24 Jun 2008 09:24:30 +0200 (CEST) +Received: from mail.service.utwente.nl ([130.89.5.253]) by exchange.service.utwente.nl with Microsoft SMTPSVC(6.0.3790.3959); + Tue, 24 Jun 2008 09:20:48 +0200 +Received: from smtp.utwente.nl ([130.89.2.8]) by mail.service.utwente.nl with Microsoft SMTPSVC(6.0.3790.3959); + Tue, 24 Jun 2008 09:20:47 +0200 +Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) + by smtp.utwente.nl (8.12.10/SuSE Linux 0.7) with ESMTP id m5O7BPWU031214 + for <k.kooi@student.utwente.nl>; Tue, 24 Jun 2008 09:11:25 +0200 +Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand + id S1751128AbYFXHLY (ORCPT <rfc822;k.kooi@student.utwente.nl>); + Tue, 24 Jun 2008 03:11:24 -0400 +Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751405AbYFXHLX + (ORCPT <rfc822;linux-omap-outgoing>); + Tue, 24 Jun 2008 03:11:23 -0400 +Received: from utopia.booyaka.com ([72.9.107.138]:44580 "EHLO + utopia.booyaka.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org + with ESMTP id S1751128AbYFXHLX (ORCPT + <rfc822;linux-omap@vger.kernel.org>); Tue, 24 Jun 2008 03:11:23 -0400 +Received: (qmail 1744 invoked by uid 526); 24 Jun 2008 07:11:21 -0000 +Date: Tue, 24 Jun 2008 01:11:21 -0600 (MDT) +From: Paul Walmsley <paul@pwsan.com> +To: linux-omap@vger.kernel.org +Subject: [PATCH] OMAP3 clock: fix DPLL jitter correction and rate + programming +Message-ID: <alpine.DEB.1.00.0806240109440.9741@utopia.booyaka.com> +User-Agent: Alpine 1.00 (DEB 882 2007-12-20) +MIME-Version: 1.0 +Content-Type: TEXT/PLAIN; charset=US-ASCII +Sender: linux-omap-owner@vger.kernel.org +Precedence: bulk +List-ID: <linux-omap.vger.kernel.org> +X-Mailing-List: linux-omap@vger.kernel.org +X-UTwente-MailScanner-Information: Scanned by MailScanner. Contact servicedesk@icts.utwente.nl for more information. +X-UTwente-MailScanner: Found to be clean +X-UTwente-MailScanner-From: linux-omap-owner@vger.kernel.org +X-Spam-Status: No +X-OriginalArrivalTime: 24 Jun 2008 07:20:48.0265 (UTC) FILETIME=[D325F790:01C8D5CA] + + +Fix DPLL jitter correction programming. Previously, +omap3_noncore_dpll_program() stored the FREQSEL jitter correction +parameter to the wrong register. This caused jitter correction to be set +incorrectly and also caused the DPLL divider to be programmed incorrectly. + +Also, fix DPLL divider programming. An off-by-one error existed in +omap3_noncore_dpll_program(), causing DPLLs to be programmed with a higher +divider than intended. + +Signed-off-by: Paul Walmsley <paul@pwsan.com> +--- + + arch/arm/mach-omap2/clock34xx.c | 13 ++++++++----- + 1 files changed, 8 insertions(+), 5 deletions(-) + +diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c +index 408b51a..8fdf8f3 100644 +--- a/arch/arm/mach-omap2/clock34xx.c ++++ b/arch/arm/mach-omap2/clock34xx.c +@@ -346,14 +346,17 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel) + /* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */ + _omap3_noncore_dpll_bypass(clk); + ++ /* Set jitter correction */ ++ v = __raw_readl(dd->control_reg); ++ v &= ~dd->freqsel_mask; ++ v |= freqsel << __ffs(dd->freqsel_mask); ++ __raw_writel(v, dd->control_reg); ++ ++ /* Set DPLL multiplier, divider */ + v = __raw_readl(dd->mult_div1_reg); + v &= ~(dd->mult_mask | dd->div1_mask); +- +- /* Set mult (M), div1 (N), freqsel */ + v |= m << __ffs(dd->mult_mask); +- v |= n << __ffs(dd->div1_mask); +- v |= freqsel << __ffs(dd->freqsel_mask); +- ++ v |= (n - 1) << __ffs(dd->div1_mask); + __raw_writel(v, dd->mult_div1_reg); + + /* We let the clock framework set the other output dividers later */ +-- +To unsubscribe from this list: send the line "unsubscribe linux-omap" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html + |