Messages in this thread | | | From | Marek Vasut <> | Subject | Re: [PATCH] mtd: spi-nor: Add support for sst25wf020a. | Date | Sat, 15 Aug 2015 15:29:35 +0200 |
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On Saturday, August 15, 2015 at 10:38:59 AM, Alexis Ballier wrote: > On Fri, 14 Aug 2015 22:45:14 +0200 > > Marek Vasut <marex@denx.de> wrote: > > On Friday, August 14, 2015 at 07:35:39 PM, Alexis Ballier wrote: > > > It is a 256KiB flash with 4 KiB erase sectors > > > and 64KiB overlay blocks. > > > > > > This is the one available on Hardkernel's Odroid U3 shield. > > > > > > Signed-off-by: Alexis Ballier <aballier@gentoo.org> > > > --- > > > > > > drivers/mtd/spi-nor/spi-nor.c | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git a/drivers/mtd/spi-nor/spi-nor.c > > > b/drivers/mtd/spi-nor/spi-nor.c index d78831b..e521b35 100644 > > > --- a/drivers/mtd/spi-nor/spi-nor.c > > > +++ b/drivers/mtd/spi-nor/spi-nor.c > > > @@ -636,6 +636,7 @@ static const struct spi_device_id spi_nor_ids[] > > > = { { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K | > > > SST_WRITE) > > > > }, > > > > > { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K > > > > > > | SST_WRITE) > > > > }, > > > > > { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K > > > > > > | SST_WRITE) > > > > }, > > > > > + { "sst25wf020a", INFO(0x621612, 0, 64 * 1024, 4, > > > SECT_4K) }, > > > > Is the SST_WRITE not needed on this device ? > > Tried that at first and it didn't work (writes were silently not > performed).
This is the worst possible behavior.
> I'm no expert here, but I don't see anything about auto address > increment in the spec: > http://ww1.microchip.com/downloads/en/DeviceDoc/20005139E.pdf > and it uses the page program command (0x02).
They probably decided to start rolling out a standard SPI NOR, which is good :)
Best regards, Marek Vasut
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