[U-Boot] [PATCH] mtd: qspi: support read the flag status in fspi driver

[Jagan Teki]

On Mon, Jan 7, 2019 at 2:24 PM Ye Li <ye.li at nxp.com> wrote:
>
> From: Han Xu <han.xu at nxp.com>
>
> Support to read the flag status in driver to avoid the spi-nor framework
> wait_for_ready hang issue.
>
> Signed-off-by: Han Xu <han.xu at nxp.com>
> ---
>  drivers/spi/fsl_qspi.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
>
> diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c
> index 1987a72..ed0e649 100644
> --- a/drivers/spi/fsl_qspi.c
> +++ b/drivers/spi/fsl_qspi.c
> @@ -47,6 +47,7 @@ DECLARE_GLOBAL_DATA_PTR;
>  #endif
>  #define SEQID_WRAR             13
>  #define SEQID_RDAR             14
> +#define SEQID_RDFSR            15
>
>  /* QSPI CMD */
>  #define QSPI_CMD_PP            0x02    /* Page program (up to 256 bytes) */
> @@ -57,6 +58,7 @@ DECLARE_GLOBAL_DATA_PTR;
>  #define QSPI_CMD_CHIP_ERASE    0xc7    /* Erase whole flash chip */
>  #define QSPI_CMD_SE            0xd8    /* Sector erase (usually 64KiB) */
>  #define QSPI_CMD_RDID          0x9f    /* Read JEDEC ID */
> +#define QSPI_CMD_FLAG_SR       0x70    /* Read FLAG STATUS*/

NAK, need to handle this from flash side. better keep working on that front.