[U-Boot] [PATCH 4/5] sf: Update SST25* flash params of supported read commands

Jagan Teki jagannadh.teki at gmail.com
Tue Oct 28 08:09:45 CET 2014


Hi Bin,

On 28 October 2014 06:52, Bin Meng <bmeng.cn at gmail.com> wrote:
> Hi Jegan,
>
> On Tue, Oct 28, 2014 at 2:08 AM, Jagan Teki <jagannadh.teki at gmail.com> wrote:
>> What is this, by defining RD_EXTN the fastest read cmd will pick based
>> on controller mode_rx
>> Why this RD_SLOW again? does this means the specific flash part will
>> only support slow read?
>
> Correct, the SST25* (except SST25VF064C) only supports the array read
> (03h) and fast array read (0Bh) command.

Then make sure to add 0 for picking up fast read(default) and if you
need a slow read
to be operate all the ways just define RD_EXTN flash side and
SPI_OPM_RX_AS (but
which is not a recommended one as we have fast read supporting).

thanks!
-- 
Jagan.


More information about the U-Boot mailing list