linux-kernel - RE: [PATCH 1/1] davinci: changed SRAM allocator to shared ram.

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Date:	Wed, 23 Feb 2011 21:00:29 +0530
From:	"Nori, Sekhar" <nsekhar@...com>
To:	Subhasish Ghosh <subhasish@...tralsolutions.com>,
	"davinci-linux-open-source@...ux.davincidsp.com" 
	<davinci-linux-open-source@...ux.davincidsp.com>
CC:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"Watkins, Melissa" <m-watkins@...com>,
	"sachi@...tralsolutions.com" <sachi@...tralsolutions.com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Russell King <linux@....linux.org.uk>,
	Michael Williamson <michael.williamson@...ticallink.com>,
	"Chemparathy, Cyril" <cyril@...com>,
	Sergei Shtylyov <sshtylyov@...mvista.com>,
	open list <linux-kernel@...r.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.

Thanks,
Sekhar

> 
> Signed-off-by: Subhasish Ghosh <subhasish@...tralsolutions.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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