[U-Boot] need clarification regarding mmc csd structure declaration

Gururaja Hebbar K R gururajakr at sanyo.co.in
Sat Aug 16 04:39:17 CEST 2008


Hi,

I need few clarification regarding mmc csd structure declaration. I was taking Atmel mci as reference.

In ProductManualSDCardv2.2.pdf @ page 34 & ProdManualSDCardv1.9[1].pdf @ page 39, says 

...
...
...
C_SIZE_MULT  	3 bit width
ERASE_BLK_EN 	1 bit width
SECTOR_SIZE 	7 bit width
WP_GRP_SIZE  	7 bit width
WP_GRP_ENABLE	1 bit width
...
...
.. 

But in mmc.h file inside u-boot-1.3.4\include\asm-avr32\arch-at32ap700x.

Here, inside structure mmc_csd @ line 

...
...
...
c_size_mult:3
sector_size:5
erase_grp_size:5
wp_grp_size:5
wp_grp_enable:1
...
...
...


So my doubt is, Shouldn't erase_grp_size come before sector size. 

please correct me if i am wrong.

TIA

Regards
Gururaja




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