Messages in this thread | | | From | Jagan Teki <> | Date | Wed, 16 Nov 2016 23:14:24 +0530 | Subject | Re: [PATCH v3 6/9] mtd: spi-nor: Support R/W for S25FS-S family flash |
| |
On Thu, Aug 18, 2016 at 1:08 PM, Yunhui Cui <B56489@freescale.com> wrote: > From: Yunhui Cui <yunhui.cui@nxp.com> > > With the physical sectors combination, S25FS-S family flash > requires some special operations for read/write functions. > > Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> > --- > drivers/mtd/spi-nor/spi-nor.c | 56 +++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 56 insertions(+) > > diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c > index d0fc165..495d0bb 100644 > --- a/drivers/mtd/spi-nor/spi-nor.c > +++ b/drivers/mtd/spi-nor/spi-nor.c > @@ -39,6 +39,10 @@ > > #define SPI_NOR_MAX_ID_LEN 6 > #define SPI_NOR_MAX_ADDR_WIDTH 4 > +/* Added for S25FS-S family flash */ > +#define SPINOR_CONFIG_REG3_OFFSET 0x800004 > +#define CR3V_4KB_ERASE_UNABLE 0x8 > +#define SPINOR_S25FS_FAMILY_EXT_JEDEC 0x81 > > struct flash_info { > char *name; > @@ -78,6 +82,7 @@ struct flash_info { > }; > > #define JEDEC_MFR(info) ((info)->id[0]) > +#define EXT_JEDEC(info) ((info)->id[5]) > > static const struct flash_info *spi_nor_match_id(const char *name); > > @@ -899,6 +904,7 @@ static const struct flash_info spi_nor_ids[] = { > */ > { "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, > { "s25sl064p", INFO(0x010216, 0x4d00, 64 * 1024, 128, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, > + { "s25fs256s1", INFO6(0x010219, 0x4d0181, 64 * 1024, 512, 0)},
Handling normal and parameter sectors on specific chip part look quite messy, and this patch[1] will erase SECT_4K by seeing whole flash as normal sectors.
[1] https://patchwork.kernel.org/patch/9266541/
thanks! -- Jagan Teki Free Software Engineer | www.openedev.com U-Boot, Linux | Upstream Maintainer Hyderabad, India.
| |