From: Ofer Heifetz
I'm looking into the NAND support for the db-88f6820-amc board.
There are a number of changes in the pxa3xx_nand driver in Linux that
are relevant (not specifically to this boards but to Armada boards in
general). Some of these changes are cleanups and some are actual bug
fixes
From: Ofer Heifetz
Since the pxa3xx_nand driver was added there has been a discrepancy in
pxa3xx_nand_set_sdr_timing() around the setting of tWP_min and tRP_min.
This brings us into line with the current Linux code.
Signed-off-by: Chris Packham
Tested-by: Ofer Heifetz
---
drivers/mtd/nand/pxa
From: Ofer Heifetz
Don't store struct mtd_info in struct pxa3xx_nand_host. Instead use the
one that is already part of struct nand_chip. This brings us in line
with current U-boot and Linux conventions.
Signed-off-by: Chris Packham
Reviewed-by: Ofer Heifetz
Tested-by: Ofer Heifetz
---
driver
From: Ofer Heifetz
The read ID count should be made as large as the maximum READ_ID size,
so there's no need to have dynamic size. This commit sets the hardware
maximum read ID count, which should be more than enough on all cases.
Also, we get rid of the read_id_bytes, and use a macro instead.
[
From: Ofer Heifetz
The Data Flash Control Register (NDCR) contains two types
of parameters: those that are needed for device identification,
and those that can only be set after device identification.
Therefore, the driver can't set them all at once and instead
needs to configure the first group
From: Ofer Heifetz
When 2 commands are submitted in a row, and the second is very quick,
the completion of the second command might never come. This happens
especially if the second command is quick, such as a status read
after an erase
[ Linux commit 21fc0ef9652f0c809dc0d3e0a67f1e1bf6ff8255 ]
From: Ofer Heifetz
This commit simplifies the initial configuration performed
by pxa3xx_nand_scan. No functionality change is intended.
[ Linux commit 154f50fbde539c20bbf74854461d932ebdace4d5 ]
Cc: Ezequiel García
Signed-off-by: Chris Packham
Reviewed-by: Ofer Heifetz
Tested-by: Ofer Heifetz
From: Ofer Heifetz
When the nand is first probe, and upon the first command start, the
status bits should be cleared before the interrupts are unmasked.
[ Linux commit 0b14392db2e998157d924085d7913e537ec26121 ]
Cc: Robert Jarzmik
Signed-off-by: Chris Packham
Reviewed-by: Ofer Heifetz
Tested-
From: Ofer Heifetz
The chunk size represents the size of the data chunks, which
is used by the controllers that allow to split transfered data.
However, the initial chunk size is used in a non-splitted way,
during device identification. Therefore, it must be large enough
for all the NAND command
From: Ofer Heifetz
This commit is needed to properly support the 8-bits ECC configuration
with 4KB pages.
When pages larger than 2 KB are used on platforms using the PXA3xx
NAND controller, the reading/programming operations need to be split
in chunks of 2 KBs or less because the controller FIFO
From: Ofer Heifetz
The initial buffer is used for the initial commands used to detect
a flash device (STATUS, READID and PARAM).
ONFI param page is 256 bytes, and there are three redundant copies
to be read. JEDEC param page is 512 bytes, and there are also three
redundant copies to be read. Hen
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