Commit 1799cd85 authored by Sudip Mukherjee's avatar Sudip Mukherjee Committed by Tudor Ambarus
Browse files

mtd: spi-nor: add SFDP fixups for Quad Page Program 



SFDP table of some flash chips do not advertise support of Quad Input
Page Program even though it has support. Use flags and add hardware
cap for these chips.

Signed-off-by: default avatarSudip Mukherjee <sudip.mukherjee@sifive.com>
[tudor.ambarus@microchip.com: move pp setting in spi_nor_init_default_params]
Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20220920184808.44876-2-sudip.mukherjee@sifive.com
parent a30f53d8

drivers/mtd/spi-nor/core.c

+6 −0
Original line number Diff line number Diff line
@@ -2599,6 +2599,12 @@ static void spi_nor_init_default_params(struct spi_nor *nor) 
	params->hwcaps.mask |= SNOR_HWCAPS_PP;

	spi_nor_set_pp_settings(&params->page_programs[SNOR_CMD_PP],

				SPINOR_OP_PP, SNOR_PROTO_1_1_1);



	if (info->flags & SPI_NOR_QUAD_PP) {

		params->hwcaps.mask |= SNOR_HWCAPS_PP_1_1_4;

		spi_nor_set_pp_settings(&params->page_programs[SNOR_CMD_PP_1_1_4],

					SPINOR_OP_PP_1_1_4, SNOR_PROTO_1_1_4);

	}

}



/**

drivers/mtd/spi-nor/core.h

+2 −0
Original line number Diff line number Diff line
@@ -458,6 +458,7 @@ struct spi_nor_fixups { 
 *   SPI_NOR_NO_ERASE:        no erase command needed.

 *   NO_CHIP_ERASE:           chip does not support chip erase.

 *   SPI_NOR_NO_FR:           can't do fastread.

 *   SPI_NOR_QUAD_PP:         flash supports Quad Input Page Program.

 *

 * @no_sfdp_flags:  flags that indicate support that can be discovered via SFDP.

 *                  Used when SFDP tables are not defined in the flash. These
@@ -507,6 +508,7 @@ struct flash_info { 
#define SPI_NOR_NO_ERASE		BIT(6)

#define NO_CHIP_ERASE			BIT(7)

#define SPI_NOR_NO_FR			BIT(8)

#define SPI_NOR_QUAD_PP			BIT(9)



	u8 no_sfdp_flags;

#define SPI_NOR_SKIP_SFDP		BIT(0)

drivers/mtd/spi-nor/issi.c

+1 −0
Original line number Diff line number Diff line
@@ -73,6 +73,7 @@ static const struct flash_info issi_nor_parts[] = { 
	{ "is25wp256", INFO(0x9d7019, 0, 0, 0)

		PARSE_SFDP

		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)

		FLAGS(SPI_NOR_QUAD_PP)

		.fixups = &is25lp256_fixups },



	/* PMC */