[U-Boot] [PATCH v3 07/20] spl: nand: sunxi: add missing status clear

Miquel Raynal miquel.raynal at bootlin.com
Wed Feb 28 19:51:49 UTC 2018


It is best practice to always clear the status register before executing
a command to be sure that the status read afterwards is relevant.

Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon at bootlin.com>
---
 drivers/mtd/nand/sunxi_nand_spl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/nand/sunxi_nand_spl.c b/drivers/mtd/nand/sunxi_nand_spl.c
index cd823cd70b..913de7d442 100644
--- a/drivers/mtd/nand/sunxi_nand_spl.c
+++ b/drivers/mtd/nand/sunxi_nand_spl.c
@@ -245,6 +245,7 @@ static int nand_reset_column(void)
 	       (NFC_CMD_RNDOUT << NFC_RANDOM_READ_CMD0_OFFSET) |
 	       (NFC_CMD_RNDOUTSTART << NFC_READ_CMD_OFFSET),
 	       SUNXI_NFC_BASE + NFC_RCMD_SET);
+	writel(NFC_ST_CMD_INT_FLAG, SUNXI_NFC_BASE + NFC_ST);
 	writel(0, SUNXI_NFC_BASE + NFC_ADDR_LOW);
 	writel(NFC_SEND_CMD1 | NFC_SEND_CMD2 | NFC_RAW_CMD |
 	       (1 << NFC_ADDR_NUM_OFFSET) | NFC_SEND_ADDR | NFC_CMD_RNDOUT,
-- 
2.14.1



More information about the U-Boot mailing list