On Thu, Mar 20, 2014 at 01:12:35PM -0400, Santosh Shilimkar wrote: > Boris,
Who's Boris? And why should Boris be taking this patch? It's an MTD patch. > On Thursday 20 March 2014 01:06 PM, Ivan Khoronzhuk wrote: > > From: Murali Karicheri <[email protected]> > > > > After testing NAND flash with ubifs for k2hk-emv board were committed > > that flash doesn't support subpage writing, so we can fix it by > > adding a property to disable subpage write. What flash? We try to autodetect NAND as much as possible. Perhaps we should be adding infrastructure support instead of hacking it with a DT property. > > Signed-off-by: Murali Karicheri <[email protected]> > > Signed-off-by: Ivan Khoronzhuk <[email protected]> > > --- > Can you please pick this up for 3.15 fixes ? Ofcourse assuming DT folks > are ok with the patch. > > I can then take patch 1/3 and 3/3 in my 3.15 fixes queue. > > > Documentation/devicetree/bindings/mtd/davinci-nand.txt | 2 ++ > > drivers/mtd/nand/davinci_nand.c | 3 +++ > > 2 files changed, 5 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/mtd/davinci-nand.txt > > b/Documentation/devicetree/bindings/mtd/davinci-nand.txt > > index cfb18ab..50af930 100644 > > --- a/Documentation/devicetree/bindings/mtd/davinci-nand.txt > > +++ b/Documentation/devicetree/bindings/mtd/davinci-nand.txt > > @@ -53,6 +53,8 @@ Recommended properties : > > identifier is saved in OOB area. If not present > > false. > > > > +- ti,davinci-nosubpage-write: disable subpage write for the device If we really need the DT property, I'd prefer a generic "nand-numer-of-partial-programs" or something like that, and if it's equal to 1, then the flash doesn't support partial page programming. But I'd prefer not to encode that in DT if possible. > > Deprecated properties: > > > > - ti,davinci-ecc-mode: operation mode of the NAND ecc mode. > > ECC mode > > diff --git a/drivers/mtd/nand/davinci_nand.c > > b/drivers/mtd/nand/davinci_nand.c > > index 4615d79..3ba058d 100644 > > --- a/drivers/mtd/nand/davinci_nand.c > > +++ b/drivers/mtd/nand/davinci_nand.c > > @@ -581,6 +581,9 @@ static struct davinci_nand_pdata > > of_property_read_bool(pdev->dev.of_node, > > "ti,davinci-nand-use-bbt")) > > pdata->bbt_options = NAND_BBT_USE_FLASH; > > + if (of_property_read_bool(pdev->dev.of_node, > > + "ti,davinci-no-subpage-write")) > > + pdata->options |= NAND_NO_SUBPAGE_WRITE; > > } > > > > return dev_get_platdata(&pdev->dev); > > > Brian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
