Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2f5ad7f0 authored by mar.krzeminski's avatar mar.krzeminski Committed by Cyrille Pitchen
Browse files

mtd: spi-nor: Fix whole chip erasing for stacked chips. 



Currently it is possible to disable chip erase for spi-nor driver.
Some modern stacked (multi die) flash chips do not support chip
erase opcode at all but spi-nor framework needs to cope with them too.
This commit extends existing functionality to allow disable
chip erase for a single flash chip.

Signed-off-by: default avatarMarcin Krzeminski <mar.krzeminski@gmail.com>
Signed-off-by: default avatarCyrille Pitchen <cyrille.pitchen@atmel.com>
parent ca1fa1a8

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

+3 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ struct flash_info { 
					 * Use dedicated 4byte address op codes

					 * to support memory size above 128Mib.

					 */

#define NO_CHIP_ERASE		BIT(12) /* Chip does not support chip erase */

};



#define JEDEC_MFR(info)	((info)->id[0])
@@ -1631,6 +1632,8 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) 
		nor->flags |= SNOR_F_USE_FSR;

	if (info->flags & SPI_NOR_HAS_TB)

		nor->flags |= SNOR_F_HAS_SR_TB;

	if (info->flags & NO_CHIP_ERASE)

		nor->flags |= SNOR_F_NO_OP_CHIP_ERASE;



#ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS

	/* prefer "small sector" erase if possible */