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SubjectRe: [PATCH v13 10/15] mtd: spi-nor: sfdp: detect Soft Reset sequence support from BFPT
On 30/09/20 07:23AM, Tudor.Ambarus@microchip.com wrote:
> On 9/16/20 3:44 PM, Pratyush Yadav wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >
> > A Soft Reset sequence will return the flash to Power-on-Reset (POR)
> > state. It consists of two commands: Soft Reset Enable and Soft Reset.
> > Find out if the sequence is supported from BFPT DWORD 16.
> >
> > Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
> > ---
> > drivers/mtd/spi-nor/core.h | 1 +
> > drivers/mtd/spi-nor/sfdp.c | 4 ++++
> > drivers/mtd/spi-nor/sfdp.h | 2 ++
> > 3 files changed, 7 insertions(+)
> >
> > diff --git a/drivers/mtd/spi-nor/sfdp.h b/drivers/mtd/spi-nor/sfdp.h
> > index 6d7243067252..8ae55e98084e 100644
> > --- a/drivers/mtd/spi-nor/sfdp.h
> > +++ b/drivers/mtd/spi-nor/sfdp.h
> > @@ -90,6 +90,8 @@ struct sfdp_bfpt {
> > #define BFPT_DWORD15_QER_SR2_BIT1_NO_RD (0x4UL << 20)
> > #define BFPT_DWORD15_QER_SR2_BIT1 (0x5UL << 20) /* Spansion */
> >
> > +#define BFPT_DWORD16_SOFT_RST BIT(12)
>
> the name is too generic. How about
>
> #define BFPT_DWORD16_SWRST_EN_RST BIT(12)

Ok.

>
> > +
> > #define BFPT_DWORD18_CMD_EXT_MASK GENMASK(30, 29)
> > #define BFPT_DWORD18_CMD_EXT_REP (0x0UL << 29) /* Repeat */
> > #define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */

--
Regards,
Pratyush Yadav
Texas Instruments India

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