From: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
Date: Tue, 22 Oct 2019 17:22:19 +0000
Subject: mtd: spi-nor: Set default Quad Enable method for ISSI flashes
Git-commit: 83cba933a6db1dd4d7ac85170f99461fbc339eff
Patch-mainline: v5.5-rc1
References: jsc#SLE-14214 jsc#SLE-16606
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 <wesley@sifive.com>
and/or Palmer Dabbelt <palmer@sifive.com>
https://github.com/riscv/riscv-linux/commit/c94e267766d62bc9a669611c3d0c8ed5ea26569b
Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
[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 <tudor.ambarus@microchip.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
drivers/mtd/spi-nor/spi-nor.c | 9 +++++++++
include/linux/mtd/spi-nor.h | 1 +
2 files changed, 10 insertions(+)
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;
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 9eae35c60bce..5a4623fc586b 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -22,6 +22,7 @@
#define SNOR_MFR_INTEL CFI_MFR_INTEL
#define SNOR_MFR_ST CFI_MFR_ST /* ST Micro */
#define SNOR_MFR_MICRON CFI_MFR_MICRON /* Micron */
+#define SNOR_MFR_ISSI CFI_MFR_PMC
#define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX
#define SNOR_MFR_SPANSION CFI_MFR_AMD
#define SNOR_MFR_SST CFI_MFR_SST
--
2.28.0