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mtd: onenand: fix 4KiB page onenand chip recognition

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For 4Gib non-DDP chip it does not follow that it is always 4KiB page chip.
The number of data buffers is checked and if it is equal to 1
we suppose that it is 4KiB page onenand chip.

Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Roman Tereshonkov 2010-10-11 14:47:32 +03:00 committed by David Woodhouse
parent 940fe282ae
commit edb44b9b9c
1 changed files with 3 additions and 2 deletions
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5
drivers/mtd/onenand/onenand_base.c
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@ -3365,18 +3365,19 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
static void onenand_check_features(struct mtd_info *mtd)
{
struct onenand_chip *this = mtd->priv;
unsigned int density, process;
unsigned int density, process, numbufs;
/* Lock scheme depends on density and process */
density = onenand_get_density(this->device_id);
process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT;
numbufs = this->read_word(this->base + ONENAND_REG_NUM_BUFFERS) >> 8;
/* Lock scheme */
switch (density) {
case ONENAND_DEVICE_DENSITY_4Gb:
if (ONENAND_IS_DDP(this))
this->options |= ONENAND_HAS_2PLANE;
else
else if (numbufs == 1)
this->options |= ONENAND_HAS_4KB_PAGE;
case ONENAND_DEVICE_DENSITY_2Gb: