Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752135Ab1BZML0 (ORCPT ); Sat, 26 Feb 2011 07:11:26 -0500 Received: from mail-iy0-f174.google.com ([209.85.210.174]:41919 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751777Ab1BZMLY (ORCPT ); Sat, 26 Feb 2011 07:11:24 -0500 Message-ID: <25DBF349769A4CF7B883D6D7FF01AD70@subhasishg> From: "Subhasish Ghosh" To: "Nori, Sekhar" , Cc: , "Watkins, Melissa" , , "Kevin Hilman" , "Russell King" , "Michael Williamson" , "Chemparathy, Cyril" , "Sergei Shtylyov" , "open list" References: <1297434088-27995-1-git-send-email-subhasish@mistralsolutions.com> <886E26C48DE446C3937D89ECF86030B2@subhasishg> In-Reply-To: Subject: Re: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. Date: Sat, 26 Feb 2011 17:42:39 +0530 Organization: Mistral Solutions MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5122 Lines: 139 Hi Sekhar, I tried this using MMC and Kelvin's suggestions, but it never came back. Here is a log: root@arago:~# rtcwake -d /dev/rtc0 -s 20 -m mem wakeup from "mem" at Tue Apr 21 14:31:13 2009 PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.01 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. Suspending console(s) (use no_console_suspend to debug) >From the Kconfig I had enabled RTC_DRV_OMAP, CONFIG_PM, CONFIG_SUSPEND. -------------------------------------------------- From: "Nori, Sekhar" Sent: Thursday, February 24, 2011 4:57 PM To: "Subhasish Ghosh" ; Cc: ; "Watkins, Melissa" ; ; "Kevin Hilman" ; "Russell King" ; "Michael Williamson" ; "Chemparathy, Cyril" ; "Sergei Shtylyov" ; "open list" Subject: RE: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. > Hi Subhasish, > > On Thu, Feb 24, 2011 at 15:54:56, Subhasish Ghosh wrote: >> -------------------------------------------------- >> From: "Nori, Sekhar" >> Sent: Wednesday, February 23, 2011 9:00 PM >> To: "Subhasish Ghosh" ; >> >> Cc: ; "Watkins, Melissa" >> ; ; "Kevin Hilman" >> ; "Russell King" ; >> "Michael Williamson" ; "Chemparathy, >> Cyril" ; "Sergei Shtylyov" ; "open >> list" >> Subject: RE: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. >> >> > Hi Subhasish, >> > >> > On Fri, Feb 11, 2011 at 19:51:28, Subhasish Ghosh wrote: >> >> This patch modifies the sram allocator to allocate memory >> >> from the DA8XX shared RAM. >> > >> > It will be nice to know if you tried suspend-to-RAM >> > after this change and found it to be working. >> > >> >> SG -- My file system is currently mounted from MMC. >> Suspend to RAM seems to have bug with MMC. >> >> (http://processors.wiki.ti.com/index.php/OMAP-L1_Linux_Drivers_Usage#Suspend-to-RAM) > > You can try Kevin's suggestion here: > > http://linux.davincidsp.com/pipermail/davinci-linux-open-source/2011-January/021807.html > >> I had tried NFS earlier, but I think there is some problem with >> NFS boot and udev with this kernel. > > Anyway there are some problems reported with Ethernet > driver and suspend on the latest kernel. Folks inside > TI are working on it. > >> So, currently I will not be able to do it, but will try if I >> get >> a chance. > > How about using ramdisk? > > Thanks, > Sekhar > >> > Thanks, >> > Sekhar >> > >> >> >> >> Signed-off-by: Subhasish Ghosh >> >> --- >> >> arch/arm/mach-davinci/da850.c | 6 +++--- >> >> arch/arm/mach-davinci/include/mach/da8xx.h | 1 + >> >> 2 files changed, 4 insertions(+), 3 deletions(-) >> >> >> >> diff --git a/arch/arm/mach-davinci/da850.c >> >> b/arch/arm/mach-davinci/da850.c >> >> index 3443d97..8a4de97 100644 >> >> --- a/arch/arm/mach-davinci/da850.c >> >> +++ b/arch/arm/mach-davinci/da850.c >> >> @@ -711,7 +711,7 @@ static struct map_desc da850_io_desc[] = { >> >> }, >> >> { >> >> .virtual = SRAM_VIRT, >> >> - .pfn = __phys_to_pfn(DA8XX_ARM_RAM_BASE), >> >> + .pfn = __phys_to_pfn(DA8XX_SHARED_RAM_BASE), >> >> .length = SZ_8K, >> >> .type = MT_DEVICE >> >> }, >> >> @@ -1083,8 +1083,8 @@ static struct davinci_soc_info >> >> davinci_soc_info_da850 = { >> >> .gpio_irq = IRQ_DA8XX_GPIO0, >> >> .serial_dev = &da8xx_serial_device, >> >> .emac_pdata = &da8xx_emac_pdata, >> >> - .sram_dma = DA8XX_ARM_RAM_BASE, >> >> - .sram_len = SZ_8K, >> >> + .sram_dma = DA8XX_SHARED_RAM_BASE, >> >> + .sram_len = SZ_128K, >> >> .reset_device = &da8xx_wdt_device, >> >> }; >> >> >> >> diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h >> >> b/arch/arm/mach-davinci/include/mach/da8xx.h >> >> index cfcb223..c3c3339 100644 >> >> --- a/arch/arm/mach-davinci/include/mach/da8xx.h >> >> +++ b/arch/arm/mach-davinci/include/mach/da8xx.h >> >> @@ -70,6 +70,7 @@ extern unsigned int da850_max_speed; >> >> #define DA8XX_AEMIF_CTL_BASE 0x68000000 >> >> #define DA8XX_DDR2_CTL_BASE 0xb0000000 >> >> #define DA8XX_ARM_RAM_BASE 0xffff0000 >> >> +#define DA8XX_SHARED_RAM_BASE 0x80000000 >> >> >> >> void __init da830_init(void); >> >> void __init da850_init(void); >> >> -- >> >> 1.7.2.3 >> >> >> >> >> > >> > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/