Hi All,

I use implement the esdhc driver and use driver/mmc/mmc.c and I think there might be a bug.

I have a 4G mmc plus card in hand.

The mmc_send_op_cond( ) function in mmc_init( ) will set mmc->high_capacity to 0. It's not a high capacity card.

And in mmc_change_freq( ), due to SEC_CNT in ext_csd[ ] is not zero, mmc->high_capacity will be set to 1. It will be addressed by sector.

But this card is not a high capacity card. Sector address will make it access wrong data.

When I comment the line:

if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215]) mmc->high_capacity = 1;

The data in mmc can be read and write correctly.

Is this need to be changed?

Thanks~~

Yours Terry

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