Messages in this thread Patch in this message | | | From | "Subhasish Ghosh" <> | Subject | Re: [PATCH 1/1] davinci: changed SRAM allocator to shared ram. | Date | Thu, 24 Feb 2011 15:54:56 +0530 |
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-------------------------------------------------- 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) I had tried NFS earlier, but I think there is some problem with NFS boot and udev with this kernel. So, currently I will not be able to do it, but will try if I get a chance.
> 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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