Unverified Commit 6823a838 authored by Mamta Shukla's avatar Mamta Shukla Committed by Tudor Ambarus
Browse files

mtd: spi-nor: micron-st: use SFDP table for mt25qu512a 



Parse SFDP table to get size and functions of mt25qu512a. BFPT wrongly
advertises 16bit SR support and made the locking fail. Add a post BFPT
fixup hook to clear the 16bit SR support.

cat /sys/bus/spi/devices/spi-PRP0001:00/spi-nor/jedec_id
20bb20104400

cat /sys/bus/spi/devices/spi-PRP0001:00/spi-nor/manufacturer
st

cat /sys/bus/spi/devices/spi-PRP0001:00/spi-nor/partname
mt25qu512a

xxd -p  /sys/bus/spi/devices/spi-PRP0001:00/spi-nor/sfdp
53464450060101ff00060110300000ff84000102800000ffffffffffffff
ffffffffffffffffffffffffffffffffffffe520fbffffffff1f29eb276b
273b27bbffffffffffff27bbffff29eb0c2010d80f520000244a99008b8e
03e1ac0127387a757a75fbbdd55c4a0f82ff81bd3d36ffffffffffffffff
ffffffffffffffffffe7ffff21dcffff

md5sum  /sys/bus/spi/devices/spi-PRP0001:00/spi-nor/sfdp
610efba1647e00ac6db18beb11e84c04
/sys/bus/spi/devices/spi-PRP0001:00/spi-nor/sfdp

Signed-off-by: default avatarMamta Shukla <mamta.shukla@leica-geosystems.com>
Reviewed-by: default avatarPratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20231017074711.12167-2-tudor.ambarus@linaro.org


Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@linaro.org>
parent a2a3e543

drivers/mtd/spi-nor/micron-st.c

+13 −3
Original line number Diff line number Diff line
@@ -180,6 +180,18 @@ static const struct flash_info micron_nor_parts[] = { 
	},

};



static int mt25qu512a_post_bfpt_fixup(struct spi_nor *nor,

				      const struct sfdp_parameter_header *bfpt_header,

				      const struct sfdp_bfpt *bfpt)

{

	nor->flags &= ~SNOR_F_HAS_16BIT_SR;

	return 0;

}



static struct spi_nor_fixups mt25qu512a_fixups = {

	.post_bfpt = mt25qu512a_post_bfpt_fixup,

};



static const struct flash_info st_nor_parts[] = {

	{

		.name = "m25p05-nonjedec",
@@ -407,10 +419,8 @@ static const struct flash_info st_nor_parts[] = { 
		.name = "mt25qu512a",

		.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |

			 SPI_NOR_BP3_SR_BIT6,

		.size = SZ_64M,

		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,

		.fixup_flags = SPI_NOR_4B_OPCODES,

		.mfr_flags = USE_FSR,

		.fixups = &mt25qu512a_fixups,

	}, {

		.id = SNOR_ID(0x20, 0xbb, 0x20),

		.name = "n25q512a",