Re: [PATCH] driver/mtd:IFC NAND:Initialise internal SRAM before any write

2012-09-27 Thread Kumar Gala
On Sep 13, 2012, at 3:54 AM, Prabhakar Kushwaha wrote: > IFC-1.1.0 uses 28nm techenology for SRAM. This tech has known limitaion for > SRAM i.e. "byte select" is not supported. Hence Read Modify Write is > implemented in IFC for any "system side write" into sram buffer. Reading an > uninitialized

Re: [PATCH] driver/mtd:IFC NAND:Initialise internal SRAM before any write

2012-09-26 Thread Artem Bityutskiy
On Thu, 2012-09-13 at 07:53 -0500, Kumar Gala wrote: > > drivers/mtd/nand/fsl_ifc_nand.c | 56 > > ++- > > 1 file changed, 55 insertions(+), 1 deletion(-) > > If MTD maintainers ack, I'm happy to pull this in via PPC tree. Acked-by: Artem Bityutskiy -- Bes

Re: [PATCH] driver/mtd:IFC NAND:Initialise internal SRAM before any write

2012-09-25 Thread Prabhakar Kushwaha
On 09/13/2012 06:23 PM, Kumar Gala wrote: On Sep 13, 2012, at 3:54 AM, Prabhakar Kushwaha wrote: IFC-1.1.0 uses 28nm techenology for SRAM. This tech has known limitaion for SRAM i.e. "byte select" is not supported. Hence Read Modify Write is implemented in IFC for any "system side write" into s

Re: [PATCH] driver/mtd:IFC NAND:Initialise internal SRAM before any write

2012-09-13 Thread Kumar Gala
On Sep 13, 2012, at 3:54 AM, Prabhakar Kushwaha wrote: > IFC-1.1.0 uses 28nm techenology for SRAM. This tech has known limitaion for > SRAM i.e. "byte select" is not supported. Hence Read Modify Write is > implemented in IFC for any "system side write" into sram buffer. Reading an > uninitialized

[PATCH] driver/mtd:IFC NAND:Initialise internal SRAM before any write

2012-09-13 Thread Prabhakar Kushwaha
IFC-1.1.0 uses 28nm techenology for SRAM. This tech has known limitaion for SRAM i.e. "byte select" is not supported. Hence Read Modify Write is implemented in IFC for any "system side write" into sram buffer. Reading an uninitialized memory results in ECC Error from sram wrapper. Hence we must in