On 29.08.2018 10:56, [email protected] wrote:
From: Ofer Heifetz <[email protected]>
The chunk size represents the size of the data chunks, which
is used by the controllers that allow to split transferred data.
However, the initial chunk size is used in a non-split way,
during device identification. Therefore, it must be large enough
for all the NAND commands issued during device identification.
This includes NAND_CMD_PARAM which was recently changed to
transfer up to 2048 bytes (for the redundant parameter pages).
Thus, the initial chunk size should be 2048 as well.
On Armada 370/XP platforms (NFCv2) booted without the keep-config
devicetree property, this commit fixes a timeout on the NAND_CMD_PARAM
command:
[..]
pxa3xx-nand f10d0000.nand: This platform can't do DMA on this device
pxa3xx-nand f10d0000.nand: Wait time out!!!
nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x38
nand: Micron MT29F8G08ABABAWP
nand: 1024 MiB, SLC, erase size: 512 KiB, page size: 4096, OOB size: 224
This commit is taken from Linux:
'commit c7f00c29aa8'
("mtd: pxa3xx_nand: Increase the initial chunk size")
Signed-off-by: Chris Packham <[email protected]>
Signed-off-by: Ofer Heifetz <[email protected]>
Reviewed-by: Igal Liberman <[email protected]>
Cc: Stefan Roese <[email protected]>
Cc: Simon Glass <[email protected]>
---
drivers/mtd/nand/pxa3xx_nand.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 575fdd2..835b419 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1376,7 +1376,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
goto KEEP_CONFIG;
/* Set a default chunk size */
- info->chunk_size = 512;
+ info->chunk_size = PAGE_CHUNK_SIZE;
ret = pxa3xx_nand_sensing(host);
if (ret) {
Applied to u-boot-marvell/master
Thanks,
Stefan
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