[2/2] mtd: nand: denali: support two row address cycle devices

Message ID 1505183851-29355-3-git-send-email-yamada.masahiro@socionext.com
State Superseded
Headers show
Series
  • mtd: nand: introduce NAND_ROW_ADDR_3 flag and improve Denali driver
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Commit Message

Masahiro Yamada Sept. 12, 2017, 2:37 a.m.
The register TWO_ROW_ADDR_CYCLES specifies the number of row address
cycles of the device, but it is fixed to 0 in the driver init code
(i.e. always 3 row address cycles).

Reflect the result of nand_scan_ident() to the register setting
in order to support 2 row address cycle devices.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 drivers/mtd/nand/denali.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index 3087b0b..aefdc83 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -1137,8 +1137,6 @@  static void denali_hw_init(struct denali_nand_info *denali)
 
 	iowrite32(0xffff, denali->reg + SPARE_AREA_MARKER);
 
-	/* Should set value for these registers when init */
-	iowrite32(0, denali->reg + TWO_ROW_ADDR_CYCLES);
 	iowrite32(1, denali->reg + ECC_ENABLE);
 }
 
@@ -1379,6 +1377,8 @@  int denali_init(struct denali_nand_info *denali)
 		  denali->reg + PAGES_PER_BLOCK);
 	iowrite32(chip->options & NAND_BUSWIDTH_16 ? 1 : 0,
 		  denali->reg + DEVICE_WIDTH);
+	iowrite32(chip->options & NAND_ROW_ADDR_3 ? 0 : TWO_ROW_ADDR_CYCLES__FLAG,
+		  denali->reg + TWO_ROW_ADDR_CYCLES);
 	iowrite32(mtd->writesize, denali->reg + DEVICE_MAIN_AREA_SIZE);
 	iowrite32(mtd->oobsize, denali->reg + DEVICE_SPARE_AREA_SIZE);