On 11/23/2011 06:14 AM, LiuShuo wrote:
> 于 2011年11月23日 07:55, Scott Wood 写道:
>> On 11/15/2011 03:29 AM, b35...@freescale.com wrote:
>>> From: Liu Shuo<b35...@freescale.com>
>>>
>>> - if (elbc_fcm_ctrl->oob || elbc_fcm_ctrl->column != 0 ||
>>> + if (elbc_fcm_ctrl->column>= mtd->writesize) {
>>> + /* write oob */
>>> + if (priv->page_size> 1) {
>>> + /* when pagesize of chip is greater than 2048,
>>> + * we have to write full page to write spare
>>> + * region, so we fill '0xff' to main region
>>> + * and some bytes of spare region which we
>>> + * don't want to rewrite.
>>> + * (write '1' won't change the original value)
>>> + */
>>> + memset(elbc_fcm_ctrl->buffer, 0xff,
>>> + elbc_fcm_ctrl->column);
>> I don't like relying on this -- can we use RNDIN instead to do a
>> discontiguous write?
>>
> I have no better way to implement it now.
> Some chips have 'NOP' limitation, so I don't use the FIR_OP_UA to do a
> oob write.
I don't think each RNDIN counts separately against NOP (someone correct
me if I'm wrong). You're writing discontiguous regions of the page in
one operation.
-Scott
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