Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756198Ab1BXL2Q (ORCPT ); Thu, 24 Feb 2011 06:28:16 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:41268 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756167Ab1BXL2P convert rfc822-to-8bit (ORCPT ); Thu, 24 Feb 2011 06:28:15 -0500 From: "Nori, Sekhar" To: Subhasish Ghosh , "davinci-linux-open-source@linux.davincidsp.com" CC: "linux-arm-kernel@lists.infradead.org" , "Watkins, Melissa" , "sachi@mistralsolutions.com" , Kevin Hilman , Russell King , Michael Williamson , "Chemparathy, Cyril" , Sergei Shtylyov , open list Date: Thu, 24 Feb 2011 16:57:54 +0530 Subject: RE: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. Thread-Topic: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. Thread-Index: AcvUDOqY4l6szl1cQaeup6EBwHNnVwAAQGkg Message-ID: References: <1297434088-27995-1-git-send-email-subhasish@mistralsolutions.com> <886E26C48DE446C3937D89ECF86030B2@subhasishg> In-Reply-To: <886E26C48DE446C3937D89ECF86030B2@subhasishg> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3832 Lines: 110 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/