mtd: nand: pxa3xx: Add support for Read parameter page command

This command is required to identify ONFI-compliant devices.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 36780e2..d63d378 100644 (file)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -590,6 +590,16 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command,
                                | addr_cycle;
                break;
 
+       case NAND_CMD_PARAM:
+               cmd = NAND_CMD_PARAM;
+               info->buf_count = 256;
+               info->ndcb0 |= NDCB0_CMD_TYPE(0)
+                               | NDCB0_ADDR_CYC(1)
+                               | cmd;
+               info->ndcb1 = (column & 0xFF);
+               info->data_size = 256;
+               break;
+
        case NAND_CMD_READID:
                cmd = host->cmdset->read_id;
                info->buf_count = host->read_id_bytes;