[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

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