From 83cba933a6db1dd4d7ac85170f99461fbc339eff Mon Sep 17 00:00:00 2001 From: Sagar Shrikant Kadam Date: Tue, 22 Oct 2019 17:22:19 +0000 Subject: mtd: spi-nor: Set default Quad Enable method for ISSI flashes Set the default Quad Enable method for ISSI flashes. Used for ISSI flashes (IS25WP256D-JMLE) that do not support SFDP tables and can not determine the Quad Enable method by parsing BFPT. Based on code originally written by Wesley Terpstra and/or Palmer Dabbelt https://github.com/riscv/riscv-linux/commit/c94e267766d62bc9a669611c3d0c8ed5ea26569b Signed-off-by: Sagar Shrikant Kadam [tudor.ambarus@microchip.com: - rebase, split and adapt for latest spi-nor/next, - use PMC CFI ID for ISSI. According to JEP106BA, "Programmable Micro Corp" changed its name to Integrated Silicon Solution (ISSI)] Signed-off-by: Tudor Ambarus Reviewed-by: Vignesh Raghavendra --- drivers/mtd/spi-nor/spi-nor.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/mtd') diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index f7c6dcb6faaa..f4afe123e9dc 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -4577,6 +4577,11 @@ static void intel_set_default_init(struct spi_nor *nor) nor->flags |= SNOR_F_HAS_LOCK; } +static void issi_set_default_init(struct spi_nor *nor) +{ + nor->params.quad_enable = spi_nor_sr1_bit6_quad_enable; +} + static void macronix_set_default_init(struct spi_nor *nor) { nor->params.quad_enable = spi_nor_sr1_bit6_quad_enable; @@ -4617,6 +4622,10 @@ static void spi_nor_manufacturer_init_params(struct spi_nor *nor) intel_set_default_init(nor); break; + case SNOR_MFR_ISSI: + issi_set_default_init(nor); + break; + case SNOR_MFR_MACRONIX: macronix_set_default_init(nor); break; -- cgit v1.2.3-59-g8ed1b