Hi Per
>>>>>>
>>>>>> if (card->ext_csd.rev >= 5) {
>>>>>> + /* check whether the eMMC card support BKOPS */
>>>>>> + if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
>>>>>> + card->ext_csd.bkops = 1;
>>>>>> + card->ext_csd.bkops_en = 1;
>>>>> What if the card has not enabled bkops? This bit could be unset.
>>>>> card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN];
>>>> When card is supported the bkops, bkops_en bit is set by default...
>>>>
>>> How do you know if the bkops_en is really enabled in th ext_csd?
>>> It could be unset in the ext_csd, right?
>>
>> In emmc4.5 spec, if card is supported the bkops, bkops_en is set by default.
> If bkops_en is set by default it should be in the the ext_csd too, right?
> It should be safer to trust the value of ext_csd[EXT_CSD_BKOPS_EN] in
> this case I think.
If we want to ensure whether bkops_en bit is set or not, your approach is right.
Best Regards,
Jaehoon Chung
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