[PATCH v3 3/6] mtd: spi-nor: macronix: Handle ID collision b/w MX25L12805D and MX25L12835F
From: Tudor Ambarus <hidden>
Date: 2021-11-06 17:33:21
Subsystem:
memory technology devices (mtd), spi nor subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Pratyush Yadav, Michael Walle, Linus Torvalds
MX25L12835F define SFDP, while MX25L12805D does not. Signed-off-by: Tudor Ambarus <redacted> Tested-by: Heiko Thiery <redacted> Acked-by: Pratyush Yadav <redacted> --- # cat /sys/devices/platform/soc@0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0 .0/spi-nor/sfdp | xxd -p 53464450000101ff00000109300000ffc2000104600000ffffffffffffff ffffffffffffffffffffffffffffffffffffe520f1ffffffff0744eb086b 083b04bbfeffffffffff00ffffff44eb0c200f5210d800ffffffffffffff ffffffffffff003600279df9c06485cbffffffffffff drivers/mtd/spi-nor/macronix.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index 58b6cd9b194c..ac3b6ddb5c8d 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c@@ -26,6 +26,24 @@ static const struct spi_nor_fixups mx25l3205d_fixups = { .post_bfpt = mx25l3205d_post_bfpt_fixups, }; +static int mx25l12805d_post_bfpt_fixups(struct spi_nor *nor, + const struct sfdp_parameter_header *bfpt_header, + const struct sfdp_bfpt *bfpt) +{ + /* + * Macronix has a bad habit of reusing flash IDs: MX25L12835F collides + * with MX25L12805D. MX25L12835F defines SFDP tables, while the older + * variant does not. + */ + nor->name = "mx25l12835f"; + + return 0; +} + +static const struct spi_nor_fixups mx25l12805d_fixups = { + .post_bfpt = mx25l12805d_post_bfpt_fixups, +}; + static int mx25l25635_post_bfpt_fixups(struct spi_nor *nor, const struct sfdp_parameter_header *bfpt_header,
@@ -70,8 +88,10 @@ static const struct flash_info macronix_parts[] = { { "mx25u4035", INFO(0xc22533, 0, 64 * 1024, 8, SECT_4K) }, { "mx25u8035", INFO(0xc22534, 0, 64 * 1024, 16, SECT_4K) }, { "mx25u6435f", INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) }, - { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, SECT_4K | - SPI_NOR_HAS_LOCK | SPI_NOR_4BIT_BP) }, + { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, SPI_NOR_PARSE_SFDP | + SECT_4K | SPI_NOR_HAS_LOCK | SPI_NOR_4BIT_BP) + /* ID collision with mx25l12835f. */ + .fixups = &mx25l12805d_fixups }, { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) }, { "mx25r1635f", INFO(0xc22815, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ |
--
2.25.1
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