[U-Boot] [PATCH] sf: Fix s25fs512s erase size and remove SECT_4K flag

Suresh Gupta suresh.gupta at nxp.com
Thu Jun 8 07:30:24 UTC 2017


<snip>
> >
> > So best way is to disable hybrid mode and configure flash in Uniform
> > Sector Architecture
> 
> OK, then send patches to Linux and U-Boot will review and take other
> suggestions too.
> 

Thanks Jagan,
I will send U-boot patches (after testing) by early next week. 

My next point :) to discuss is "32-bit address options".
This particular flash do not support below commands 
/* Bank addr access commands */
#ifdef CONFIG_SPI_FLASH_BAR
# define CMD_BANKADDR_BRWR              0x17
# define CMD_BANKADDR_BRRD              0x16
# define CMD_EXTNADDR_WREAR             0xC5
# define CMD_EXTNADDR_RDEAR             0xC8
#endif 

Instead  of above S25FS512S flash support 32-bit address commands like 
4READ, 4P4E and many more which require 32 bit address directly pass on wires. 

Jagan, 
So, Do we have any plan to fix this? 
Yao Yuan already send one patch [1] for same. 
I think this is a decent approach [1]. If required I will resend this patch with little changes.  


[1] https://patchwork.ozlabs.org/patch/676152/ 
    
Thanks 
SuresH

> thanks!
> --
> Jagan Teki
> Free Software Engineer | www.openedev.com U-Boot, Linux | Upstream
> Maintainer Hyderabad, India.


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