> >
> > This patch resolves my problem
> I'm expecting to see your patches
>
My first patch very simple:
------------------
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 0477178..a111463 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -155,23 +155,6 @@ static int atmel_nand_device_ready(struct mtd_info *mtd)
}
/*
- * Minimal-overhead PIO for data access.
- */
-static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len)
-{
- struct nand_chip *chip = mtd->priv;
-
- memcpy_fromio(buf, chip->IO_ADDR_R, len);
-}
-
-static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
-{
- struct nand_chip *chip = mtd->priv;
-
- memcpy_toio(chip->IO_ADDR_W, buf, len);
-}
-
-/*
* Return number of ecc bytes per sector according to sector size and
* correction capability
*
@@ -1115,8 +1098,9 @@ static int __init atmel_nand_probe(struct device_d *dev)
if (host->board->bus_width_16) /* 16-bit bus width */
nand_chip->options |= NAND_BUSWIDTH_16;
- nand_chip->read_buf = atmel_read_buf;
- nand_chip->write_buf = atmel_write_buf;
+ /* use default */
+ nand_chip->read_buf = NULL;
+ nand_chip->write_buf = NULL;
atmel_nand_enable(host);
------------------
After seeing your patch, I suppose the flowing patch may be works.
The idea is use optimized read/write function when 2**ale >= pagesize
and 2**cle >= pagesize.
I can't test it because the ale = a7, cle = a6 on my board, but
pagesize is 2048
------------------
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 0477178..66cf5db 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -1115,8 +1115,8 @@ static int __init atmel_nand_probe(struct device_d *dev)
if (host->board->bus_width_16) /* 16-bit bus width */
nand_chip->options |= NAND_BUSWIDTH_16;
- nand_chip->read_buf = atmel_read_buf;
- nand_chip->write_buf = atmel_write_buf;
+ nand_chip->read_buf = NULL;
+ nand_chip->write_buf = NULL;
atmel_nand_enable(host);
@@ -1151,6 +1151,11 @@ static int __init atmel_nand_probe(struct device_d *dev)
goto err_hw_ecc;
}
+ if((1 << pdata->ale) >= mtd->writesize && (1 << pdata->cle) >= mtd->writesize) {
+ nand_chip->read_buf = atmel_read_buf;
+ nand_chip->write_buf = atmel_write_buf;
+ }
+
/* second phase scan */
if (nand_scan_tail(mtd)) {
res = -ENXIO;
------------------
--
Best Regards,
zzs
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
