diff options
| author | Takahiro Kuwano | 2023-04-06 15:17:44 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-17 11:53:28 +0200 |
| commit | 4fdb257b2a4c6dc1e2708ef5e00ebd78637bd20c (patch) | |
| tree | c155a53530319798baac1db00c13ee39e781e04c /drivers/block | |
| parent | 8630dfcdab0d70e93dec9c96f0f5cadf1ab579ca (diff) | |
mtd: spi-nor: spansion: Enable JFFS2 write buffer for Infineon s28hx SEMPER flash
[ Upstream commit 9fd0945fe6fadfb6b54a9cd73be101c02b3e8134 ]
Infineon(Cypress) SEMPER NOR flash family has on-die ECC and its program
granularity is 16-byte ECC data unit size. JFFS2 supports write buffer
mode for ECC'd NOR flash. Provide a way to clear the MTD_BIT_WRITEABLE
flag in order to enable JFFS2 write buffer mode support.
A new SNOR_F_ECC flag is introduced to determine if the part has on-die
ECC and if it has, MTD_BIT_WRITEABLE is unset.
In vendor specific driver, a common cypress_nor_ecc_init() helper is
added. This helper takes care for ECC related initialization for SEMPER
flash family by setting up params->writesize and SNOR_F_ECC.
Fixes: c3266af101f2 ("mtd: spi-nor: spansion: add support for Cypress Semper flash")
Suggested-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/d586723f6f12aaff44fbcd7b51e674b47ed554ed.1680760742.git.Takahiro.Kuwano@infineon.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/block')
0 files changed, 0 insertions, 0 deletions