Re: [U-Boot] [PATCH 1/2] mtd: vf610_nfc: mark page as dirty on block erase

On Tue, 2015-03-31 at 00:24 +0200, Stefan Agner wrote:

Actually, I just realized that the driver is not caching writes.

 switch (command) {
 case NAND_CMD_PAGEPROG:
     nfc->page = -1;

•    vf610_nfc_transfer_size(nfc->regs, nfc->page_sz);
     vf610_nfc_send_commands(nfc->regs, NAND_CMD_SEQIN,
                 command, PROGRAM_PAGE_CMD_CODE);
     vf610_nfc_addr_cycle(mtd, column, page);
     break;
  
  

The nfc->page = -1 resets the page cache, so the next read triggers a full page read.

I will check the performance consequences when disabling cache entirely, and whether it would be possible to implement a OOB only read.

OK. In the meantime I'll apply this.

-Scott