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brcmnand: Clear EXT_ADDR error registers in PIO mode

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If an error occurs in flash above 4GB in PIO mode then the EXT_ADDR
registers will be set to the location of the error and never cleared.

Reset them to 0 before reading.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Simon Arlott
2015-11-16 22:05:39 +00:00
committed by Brian Norris
parent fe7579d612
commit 0401669797
1 changed files with 2 additions and 0 deletions
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2
drivers/mtd/nand/brcmnand/brcmnand.c
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@@ -1405,6 +1405,8 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip,
/* Clear error addresses */
brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_ADDR, 0);
brcmnand_write_reg(ctrl, BRCMNAND_CORR_ADDR, 0);
brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_EXT_ADDR, 0);
brcmnand_write_reg(ctrl, BRCMNAND_CORR_EXT_ADDR, 0);
brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,
(host->cs << 16) | ((addr >> 32) & 0xffff));