[U-Boot] [PATCH v4] cfi flash: add status polling method for amd flash
Wolfgang Denk
wd at denx.de
Thu Mar 25 12:49:54 CET 2010
Dear Stefan Roese,
In message <201003250943.17140.sr at denx.de> you wrote:
> On Wednesday 24 March 2010 03:29:21 Thomas Chou wrote:
> > This patch adds status polling method to offer an alternative to
> > data toggle method for amd flash chips.
> >
> > This patch is needed for nios2 cfi flash interface, where the bus
> > controller performs 4 bytes read cycles for a single byte read
> > instruction. The data toggle method can not detect chip busy
> > status correctly. So we have to poll DQ7, which will be inverted
> > when the chip is busy.
> >
> > This feature is enabled with the config def,
> > CONFIG_SYS_CFI_FLASH_STATUS_POLL
> >
> > In flash_erase, the verbose printing of '.' is changed that it will
> > go with each sector whether successed or failed.
>
> Applied to u-boot-cfi-flash/next. Thanks.
I object against pulling in a global change to the user interface just
like that, without any discussion.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
No journaling file system can recover your data if the disk dies.
- Steve Rago in <D4Cw1p.L9E at plc.com>
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