Merge tag 'mtd/fixes-for-5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD fixes from Miquel Raynal:
"NAND:

- Fix Micron driver as some chips enable internal ECC correction
during their discovery while they advertize they do not have any.

Hyperbus:

- Restrict the build to only ARM64 SoCs (and compile testing) which
is what should have been done since the beginning.

- Fix Kconfig issue by selection something instead of implying it"

* tag 'mtd/fixes-for-5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: hyperbus: Add hardware dependency to AM654 driver
mtd: hyperbus: Kconfig: Fix HBMC_AM654 dependencies
mtd: rawnand: micron: handle on-die "ECC-off" devices correctly

drivers/mtd/hyperbus/Kconfig

···
 
 config HBMC_AM654
 	tristate "HyperBus controller driver for AM65x SoC"
+	depends on ARM64 || COMPILE_TEST
 	select MULTIPLEXER
-	select MUX_MMIO
+	imply MUX_MMIO
 	help
 	 This is the driver for HyperBus controller on TI's AM65x and
 	 other SoCs

drivers/mtd/nand/raw/nand_micron.c

···
 	    (chip->id.data[4] & MICRON_ID_INTERNAL_ECC_MASK) != 0x2)
 		return MICRON_ON_DIE_UNSUPPORTED;
 
+	/*
+	 * It seems that there are devices which do not support ECC officially.
+	 * At least the MT29F2G08ABAGA / MT29F2G08ABBGA devices supports
+	 * enabling the ECC feature but don't reflect that to the READ_ID table.
+	 * So we have to guarantee that we disable the ECC feature directly
+	 * after we did the READ_ID table command. Later we can evaluate the
+	 * ECC_ENABLE support.
+	 */
 	ret = micron_nand_on_die_ecc_setup(chip, true);
 	if (ret)
 		return MICRON_ON_DIE_UNSUPPORTED;
···
 	if (ret)
 		return MICRON_ON_DIE_UNSUPPORTED;
 
-	if (!(id[4] & MICRON_ID_ECC_ENABLED))
-		return MICRON_ON_DIE_UNSUPPORTED;
-
 	ret = micron_nand_on_die_ecc_setup(chip, false);
 	if (ret)
+		return MICRON_ON_DIE_UNSUPPORTED;
+
+	if (!(id[4] & MICRON_ID_ECC_ENABLED))
 		return MICRON_ON_DIE_UNSUPPORTED;
 
 	ret = nand_readid_op(chip, 0, id, sizeof(id));