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" <nsek...@ti.com>
Sent: Thursday, February 24, 2011 4:57 PM
To: "Subhasish Ghosh" <subhas...@mistralsolutions.com>;
<davinci-linux-open-source@linux.davincidsp.com>
Cc: <linux-arm-ker...@lists.infradead.org>; "Watkins, Melissa"
<m-watk...@ti.com>; <sa...@mistralsolutions.com>; "Kevin Hilman"
<khil...@deeprootsystems.com>; "Russell King" <li...@arm.linux.org.uk>;
"Michael Williamson" <michael.william...@criticallink.com>; "Chemparathy,
Cyril" <cy...@ti.com>; "Sergei Shtylyov" <sshtyl...@ru.mvista.com>; "open
list" <linux-ker...@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" <nsek...@ti.com>
Sent: Wednesday, February 23, 2011 9:00 PM
To: "Subhasish Ghosh" <subhas...@mistralsolutions.com>;
<davinci-linux-open-source@linux.davincidsp.com>
Cc: <linux-arm-ker...@lists.infradead.org>; "Watkins, Melissa"
<m-watk...@ti.com>; <sa...@mistralsolutions.com>; "Kevin Hilman"
<khil...@deeprootsystems.com>; "Russell King" <li...@arm.linux.org.uk>;
"Michael Williamson" <michael.william...@criticallink.com>; "Chemparathy,
Cyril" <cy...@ti.com>; "Sergei Shtylyov" <sshtyl...@ru.mvista.com>; "open
list" <linux-ker...@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 <subhas...@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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