From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: V 3.0-rc1: [REPORT] OMAP MMC and CONSOLE Regression Date: Mon, 30 May 2011 18:03:12 +0530 Message-ID: <4DE38E88.1030402@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from na3sys009aog115.obsmtp.com ([74.125.149.238]:48309 "EHLO na3sys009aog115.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756612Ab1E3MdS (ORCPT ); Mon, 30 May 2011 08:33:18 -0400 Received: by gyg13 with SMTP id 13so1689315gyg.41 for ; Mon, 30 May 2011 05:33:17 -0700 (PDT) Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: l-o Cc: "Krishnamoorthy, Balaji T" While trying out V3.0-rc1, I noticed couple of regressions. Am posting this in case anybody come across same issues. 1.OMAP MMC code keep throwing "Pbias Voltage is not same as LDO" error continuously. Balaji is planning post right fix for the same, but just in case you get around this issue, diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c index b2f30be..94ae400 100644 --- a/arch/arm/mach-omap2/hsmmc.c +++ b/arch/arm/mach-omap2/hsmmc.c @@ -145,6 +145,7 @@ static void omap4_hsmmc1_after_set_reg(struct device *dev, int slot, int power_on, int vdd) { u32 reg; + unsigned long timeout; if (power_on) { reg = omap4_ctrl_pad_readl(control_pbias_offset); @@ -158,7 +159,14 @@ static void omap4_hsmmc1_after_set_reg(struct device *dev, int slot, OMAP4_USBC1_ICUSB_PWRDNZ_MASK); omap4_ctrl_pad_writel(reg, control_pbias_offset); /* 4 microsec delay for comparator to generate an error*/ - udelay(4); + timeout = jiffies + msecs_to_jiffies(500); + do { + reg = omap4_ctrl_pad_readl(control_pbias_offset); + if (!(reg & OMAP4_MMC1_PBIASLITE_VMODE_ERROR_MASK)) + break; + mdelay(1); + } while (!time_after(jiffies, timeout)); + reg = omap4_ctrl_pad_readl(control_pbias_offset); if (reg & OMAP4_MMC1_PBIASLITE_VMODE_ERROR_MASK) { pr_err("Pbias Voltage is not same as LDO\n"); 2. can't open /dev/ttyO2: No such file or directory This is not obvious console entry missing problem in FS. Need to look at this further.