--------------------------------------------------
From: "Nori, Sekhar" <[email protected]>
Sent: Wednesday, February 23, 2011 9:00 PM
To: "Subhasish Ghosh" <[email protected]>;
<[email protected]>
Cc: <[email protected]>; "Watkins, Melissa"
<[email protected]>; <[email protected]>; "Kevin Hilman"
<[email protected]>; "Russell King" <[email protected]>;
"Michael Williamson" <[email protected]>; "Chemparathy,
Cyril" <[email protected]>; "Sergei Shtylyov" <[email protected]>; "open
list" <[email protected]>
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 <[email protected]>
---
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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