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mtd: mxc_nand: compress ID info for send_read_id_v3
Also compress the id in case of a v3 NAND flash controller (i.mx51, i.mx53) and 16Bit buswidth. Signed-off-by: Roman Schneider <schneider@at.festo.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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1 changed files with 11 additions and 0 deletions
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@ -530,12 +530,23 @@ static void send_page_v1(struct mtd_info *mtd, unsigned int ops)
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static void send_read_id_v3(struct mxc_nand_host *host)
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{
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struct nand_chip *this = &host->nand;
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/* Read ID into main buffer */
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writel(NFC_ID, NFC_V3_LAUNCH);
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wait_op_done(host, true);
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memcpy32_fromio(host->data_buf, host->main_area0, 16);
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if (this->options & NAND_BUSWIDTH_16) {
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/* compress the ID info */
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host->data_buf[1] = host->data_buf[2];
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host->data_buf[2] = host->data_buf[4];
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host->data_buf[3] = host->data_buf[6];
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host->data_buf[4] = host->data_buf[8];
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host->data_buf[5] = host->data_buf[10];
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}
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}
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/* Request the NANDFC to perform a read of the NAND device ID. */
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