[PATCH 1/2] nand: Add Marvell Orion NAND driver
Ezequiel Garcia
ezequiel.garcia at free-electrons.com
Tue Aug 26 09:15:43 PDT 2014
On 26 Aug 04:09 PM, Sebastian Hesselbarth wrote:
> On 08/23/2014 10:19 PM, Ezequiel Garcia wrote:
> >This commit adds NAND support for the controller present in Kirkwood SoCs.
>
> Ezequiel,
>
> I just did a quick check through all public MVEBU datasheets. It looks
> like Kirkwood is really the only SoC with this specific IP while Dove,
> Armada 370, and XP have a different one.
>
Indeed. Dove's NAND controller seems to be NFC (aka NFC v1), which is
probably similar to the one in PXA3xx. Armada 370/375/380/XP documents
it as NFC v2. Both versions are similar enough to use the same pxa3xx-nand
driver.
I plan to push support for NFCv2 only in Barebox.
Regarding the so-called Orion driver, grepping Linux it seems the IP is
used in Kirkwood and Orion5x.
> >Signed-off-by: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
> >---
> > drivers/mtd/nand/Kconfig | 7 ++
> > drivers/mtd/nand/Makefile | 1 +
> > drivers/mtd/nand/nand_orion.c | 162 ++++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 170 insertions(+)
> > create mode 100644 drivers/mtd/nand/nand_orion.c
> >
> >diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
> >index 04fe3c8..ccf1f9c 100644
> >--- a/drivers/mtd/nand/Kconfig
> >+++ b/drivers/mtd/nand/Kconfig
> >@@ -90,6 +90,13 @@ config NAND_OMAP_GPMC
> > Support for NAND flash using GPMC. GPMC is a common memory
> > interface found on Texas Instrument's OMAP platforms
> >
> >+config NAND_ORION
> >+ bool
> >+ prompt "Orion NAND driver"
> >+ depends on ARCH_MVEBU
>
> Therefore, we should limit this to ARCH_KIRKWOOD. Also, we could choose
> to call the driver nand_kirkwood.c. OTOH, I am fine with Orion as long
> as we find another good name for the other IP. Remember that Dove is
> still kind-of-Orion.
>
Sure, I'm fine with naming this nand-kirkwood.c and limit it to ARCH_KIRKWOOD
to avoid confusion.
> FWIW,
>
> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
>
> I'll give it a try on Guruplug later, too.
>
Good. Any test is very well-received (although this one is almost a
copy-paste from Linux, given it's really simple).
--
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
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