[U-Boot] [PATCH v4 05/14] sf: Update sf read to support all sizes of flashes

[Simon Glass]

Hi Jagan,

On Thu, Jun 13, 2013 at 1:55 PM, Jagannadha Sutradharudu Teki <
jagannadha.sutradharudu-teki at xilinx.com> wrote:

> This patch updated the spi_flash read func to support all
> sizes of flashes using bank reg addr facility.
>
> The same support has been added in below patch for erase/write
> spi_flash functions:
> "sf: Support all sizes of flashes using bank addr reg facility"
> (sha1: c956f600cbb0943d0afe1004cdb503f4fcd8f415)
>
> With these new updates on sf framework, the flashes which has < 16MB
> are not effected as per as performance is concern and but the
> u-boot.bin size incrased ~460 bytes.
>
> sf update(for first 16MBytes), Changes before:
> U-Boot> sf update 0x1000000 0x0 0x1000000
> - N25Q256
>   16777216 bytes written, 0 bytes skipped in 199.72s, speed 86480 B/s
> - W25Q128BV
>   16777216 bytes written, 0 bytes skipped in 351.739s, speed 48913 B/s
> - S25FL256S_64K
>   16777216 bytes written, 0 bytes skipped in 65.659s, speed 262144 B/s
>
> sf update(for first 16MBytes), Changes before:
> U-Boot> sf update 0x1000000 0x0 0x1000000
> - N25Q256
>   16777216 bytes written, 0 bytes skipped in 198.953s, speed 86480 B/s
> - W25Q128BV
>   16777216 bytes written, 0 bytes skipped in 350.90s, speed 49200 B/s
> - S25FL256S_64K
>   16777216 bytes written, 0 bytes skipped in 66.521s, speed 262144 B/s
>

FYI you can also use 'sf test' to get performance numbers.

Regards,
Simon