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mtd: spi-nor: spansion: Enable JFFS2 write buffer for Infineon s25hx SEMPER flash

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[ Upstream commit 4199c1719e24e73be0acc8b0146fc31ad8af9771 ]

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.

Fixes: b6b23833fc42 ("mtd: spi-nor: spansion: Add s25hl-t/s25hs-t IDs and fixups")
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/a1cc128e094db4ec141f85bd380127598dfef17e.1680760742.git.Takahiro.Kuwano@infineon.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Takahiro Kuwano 2023-04-06 15:17:45 +09:00 committed by Greg Kroah-Hartman
parent 50f54a48f6
commit 93eb8dd4b4
1 changed files with 2 additions and 5 deletions
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7
drivers/mtd/spi-nor/spansion.c
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@ -260,13 +260,10 @@ static void s25hx_t_post_sfdp_fixup(struct spi_nor *nor)
static void s25hx_t_late_init(struct spi_nor *nor)
{
struct spi_nor_flash_parameter *params = nor->params;
/* Fast Read 4B requires mode cycles */
params->reads[SNOR_CMD_READ_FAST].num_mode_clocks = 8;
nor->params->reads[SNOR_CMD_READ_FAST].num_mode_clocks = 8;
/* The writesize should be ECC data unit size */
params->writesize = 16;
cypress_nor_ecc_init(nor);
}
static struct spi_nor_fixups s25hx_t_fixups = {