[U-Boot] [PATCH v3 04/17] sf: Add extended addr read support for winbond|stmicro

[Simon Glass]

On Tue, Jun 11, 2013 at 12:23 PM, Jagannadha Sutradharudu Teki <
jagannadha.sutradharudu-teki at xilinx.com> wrote:

> This patch provides support to read a flash extended address
> register for winbond and stmicro SPI flashes.
>
> Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
>

Reviewed-by: Simon Glass <sjg at chromium.org>

Same comment as previous patch.


> ---
> Changes for v3:
>         - none
> Changes for v2:
>         - none
>
>  drivers/mtd/spi/spi_flash.c          | 2 ++
>  drivers/mtd/spi/spi_flash_internal.h | 1 +
>  2 files changed, 3 insertions(+)
>
> diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
> index 05d1792..66b6b14 100644
> --- a/drivers/mtd/spi/spi_flash.c
> +++ b/drivers/mtd/spi/spi_flash.c
> @@ -321,6 +321,8 @@ int spi_flash_cmd_bankaddr_read(struct spi_flash
> *flash, void *data)
>
>         if (idcode0 == 0x01) {
>                 cmd = CMD_BANKADDR_BRRD;
> +       } else if ((idcode0 == 0xef) || (idcode0 == 0x20)) {
> +               cmd = CMD_EXTNADDR_RDEAR;
>         } else {
>                 printf("SF: Unsupported bank addr read %02x\n", idcode0);
>                 return -1;
> diff --git a/drivers/mtd/spi/spi_flash_internal.h
> b/drivers/mtd/spi/spi_flash_internal.h
> index de1a0df..1b29e2d 100644
> --- a/drivers/mtd/spi/spi_flash_internal.h
> +++ b/drivers/mtd/spi/spi_flash_internal.h
> @@ -32,6 +32,7 @@
>  #define CMD_BANKADDR_BRWR              0x17
>  #define CMD_BANKADDR_BRRD              0x16
>  #define CMD_EXTNADDR_WREAR             0xC5
> +#define CMD_EXTNADDR_RDEAR             0xC8
>
>  /* Common status */
>  #define STATUS_WIP                     0x01
> --
> 1.8.3
>
>
>