On Wed, Jan 13, 2016 at 05:34:15PM +0100, Romain Izard wrote: > Starting with the SAMA5D2, there is a new revision of the Atmel PMECC > controller that can correct 32 bits in each sector. This controller is > not 100% compatible with the previous revision that corrected a maximum > of 24 bits by sector, as some register addresses overlap. > > Using information from the device tree, we can configure the driver to > work with both versions. > > Signed-off-by: Romain Izard <romain.izard.pro@xxxxxxxxx> > --- > .../devicetree/bindings/mtd/atmel-nand.txt | 7 +++++-- > drivers/mtd/nand/atmel_nand.c | 23 +++++++++++++++++++++- > drivers/mtd/nand/atmel_nand_ecc.h | 8 ++++++-- > 3 files changed, 33 insertions(+), 5 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mtd/atmel-nand.txt b/Documentation/devicetree/bindings/mtd/atmel-nand.txt > index 89b0db9801b0..90887b430f03 100644 > --- a/Documentation/devicetree/bindings/mtd/atmel-nand.txt > +++ b/Documentation/devicetree/bindings/mtd/atmel-nand.txt > @@ -1,7 +1,10 @@ > Atmel NAND flash > > Required properties: > -- compatible : should be "atmel,at91rm9200-nand" or "atmel,sama5d4-nand". > +- compatible: The possible values are: > + "atmel,at91rm9200-nand" > + "atmel,sama5d2-nand" > + "atmel,sama5d4-nand" > - reg : should specify localbus address and size used for the chip, > and hardware ECC controller if available. > If the hardware ECC is PMECC, it should contain address and size for > @@ -22,7 +25,7 @@ Optional properties: > Supported values are: "none", "soft", "hw", "hw_syndrome", "hw_oob_first", > "soft_bch". > - atmel,has-pmecc : boolean to enable Programmable Multibit ECC hardware. > - Only supported by at91sam9x5 or later sam9 product. > + Supported by AT91SAM9x5 or later SAM9 chips, and SAMA5 chips. What compatible string would AT91SAM9x5 be? > - atmel,pmecc-cap : error correct capability for Programmable Multibit ECC > Controller. Supported values are: 2, 4, 8, 12, 24. > - atmel,pmecc-sector-size : sector size for ECC computation. Supported values -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
