From patchwork Mon May 4 14:09:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 245037 List-Id: U-Boot discussion From: peng.fan at nxp.com (Peng Fan) Date: Mon, 4 May 2020 22:09:03 +0800 Subject: [PATCH 14/14] nand: enable the Randomizer module for i.mx7 and i.mx8 In-Reply-To: <20200504140903.23602-1-peng.fan@nxp.com> References: <20200504140903.23602-1-peng.fan@nxp.com> Message-ID: <20200504140903.23602-15-peng.fan@nxp.com> From: Alice Guo 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 Signed-off-by: Peng Fan --- drivers/mtd/nand/raw/mxs_nand.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/mxs_nand.c b/drivers/mtd/nand/raw/mxs_nand.c index 3fd21e51f2..c3191feca8 100644 --- a/drivers/mtd/nand/raw/mxs_nand.c +++ b/drivers/mtd/nand/raw/mxs_nand.c @@ -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);