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nand: enable the Randomizer module for i.mx7 and i.mx8

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To enable the Randomizer module, set GPMI_ECCCTRL[RANDOMIZER_ENABLE] to
1, then set GPMI_ECCCOUNT[RANDOMIZER_PAGE] to select randomizer page
number needed to be randomized.

Signed-off-by: Alice Guo <alice.guo@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Alice Guo 2020-05-04 22:09:03 +08:00 committed by Stefano Babic
parent f7bb012ab7
commit fe04bcd7e8
1 changed files with 7 additions and 1 deletions
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8
drivers/mtd/nand/raw/mxs_nand.c
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@ -710,6 +710,12 @@ static int mxs_nand_ecc_read_page(struct mtd_info *mtd, struct nand_chip *nand,
d->cmd.pio_words[4] = (dma_addr_t)nand_info->data_buf;
d->cmd.pio_words[5] = (dma_addr_t)nand_info->oob_buf;
if ((is_mx7() || is_imx8m()) && nand_info->en_randomizer) {
d->cmd.pio_words[2] |= GPMI_ECCCTRL_RANDOMIZER_ENABLE |
GPMI_ECCCTRL_RANDOMIZER_TYPE2;
d->cmd.pio_words[3] |= (page % 256) << 16;
}
mxs_dma_desc_append(channel, d);
/* Compile the DMA descriptor - disable the BCH block. */
@ -871,7 +877,7 @@ static int mxs_nand_ecc_write_page(struct mtd_info *mtd,
* The value is between 0-255. For additional details
* check 9.6.6.4 of i.MX7D Applications Processor reference
*/
d->cmd.pio_words[3] |= (page % 255) << 16;
d->cmd.pio_words[3] |= (page % 256) << 16;
}
mxs_dma_desc_append(channel, d);