Messages in this thread Patch in this message | | | From | "Subhasish Ghosh" <> | Subject | Re: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. | Date | Sat, 26 Feb 2011 17:42:39 +0530 |
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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" <nsekhar@ti.com> Sent: Thursday, February 24, 2011 4:57 PM To: "Subhasish Ghosh" <subhasish@mistralsolutions.com>; <davinci-linux-open-source@linux.davincidsp.com> Cc: <linux-arm-kernel@lists.infradead.org>; "Watkins, Melissa" <m-watkins@ti.com>; <sachi@mistralsolutions.com>; "Kevin Hilman" <khilman@deeprootsystems.com>; "Russell King" <linux@arm.linux.org.uk>; "Michael Williamson" <michael.williamson@criticallink.com>; "Chemparathy, Cyril" <cyril@ti.com>; "Sergei Shtylyov" <sshtylyov@ru.mvista.com>; "open list" <linux-kernel@vger.kernel.org> 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" <nsekhar@ti.com> >> Sent: Wednesday, February 23, 2011 9:00 PM >> To: "Subhasish Ghosh" <subhasish@mistralsolutions.com>; >> <davinci-linux-open-source@linux.davincidsp.com> >> Cc: <linux-arm-kernel@lists.infradead.org>; "Watkins, Melissa" >> <m-watkins@ti.com>; <sachi@mistralsolutions.com>; "Kevin Hilman" >> <khilman@deeprootsystems.com>; "Russell King" <linux@arm.linux.org.uk>; >> "Michael Williamson" <michael.williamson@criticallink.com>; "Chemparathy, >> Cyril" <cyril@ti.com>; "Sergei Shtylyov" <sshtylyov@ru.mvista.com>; "open >> list" <linux-kernel@vger.kernel.org> >> 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 <subhasish@mistralsolutions.com> >> >> --- >> >> 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 >> >> >> >> >> > >> >
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