diff options
Diffstat (limited to 'target/linux/ramips/patches-4.14/0054-mtd-spi-nor-w25q256-respect-default-mode.patch')
-rw-r--r-- | target/linux/ramips/patches-4.14/0054-mtd-spi-nor-w25q256-respect-default-mode.patch | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/target/linux/ramips/patches-4.14/0054-mtd-spi-nor-w25q256-respect-default-mode.patch b/target/linux/ramips/patches-4.14/0054-mtd-spi-nor-w25q256-respect-default-mode.patch deleted file mode 100644 index a686937989..0000000000 --- a/target/linux/ramips/patches-4.14/0054-mtd-spi-nor-w25q256-respect-default-mode.patch +++ /dev/null @@ -1,73 +0,0 @@ ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -142,20 +142,29 @@ static int read_fsr(struct spi_nor *nor) - * location. Return the configuration register value. - * Returns negative if error occurred. - */ --static int read_cr(struct spi_nor *nor) -+static int _read_cr(struct spi_nor *nor, u8 reg) - { - int ret; - u8 val; - -- ret = nor->read_reg(nor, SPINOR_OP_RDCR, &val, 1); -+ ret = nor->read_reg(nor, reg, &val, 1); - if (ret < 0) { -- dev_err(nor->dev, "error %d reading CR\n", ret); -+ dev_err(nor->dev, "error %d reading %s\n", ret, -+ (reg==SPINOR_OP_RDCR)?"CR":"XCR"); - return ret; - } - - return val; - } - -+static inline int read_cr(struct spi_nor *nor) { -+ return _read_cr(nor, SPINOR_OP_RDCR); -+} -+ -+static inline int read_xcr(struct spi_nor *nor) { -+ return _read_cr(nor, SPINOR_OP_RDXCR); -+} -+ - /* - * Write status register 1 byte - * Returns negative if error occurred. -@@ -2898,9 +2907,16 @@ int spi_nor_scan(struct spi_nor *nor, co - } else if (mtd->size > 0x1000000) { - /* enable 4-byte addressing if the device exceeds 16MiB */ - nor->addr_width = 4; -- if (info->flags & SPI_NOR_4B_READ_OP) -- spi_nor_set_4byte_read(nor, info); -- else if (JEDEC_MFR(info) == SNOR_MFR_SPANSION || -+ if (info->flags & SPI_NOR_4B_READ_OP) { -+ if (JEDEC_MFR(info) == SNOR_MFR_WINBOND) { -+ ret = read_xcr(nor); -+ if (!(ret > 0 && (ret & XCR_DEF_4B_ADDR_MODE))) -+ spi_nor_set_4byte_read(nor, info); -+ else -+ set_4byte(nor, info, 1); -+ } else -+ spi_nor_set_4byte_read(nor, info); -+ } else if (JEDEC_MFR(info) == SNOR_MFR_SPANSION || - info->flags & SPI_NOR_4B_OPCODES) - spi_nor_set_4byte_opcodes(nor, info); - else ---- a/include/linux/mtd/spi-nor.h -+++ b/include/linux/mtd/spi-nor.h -@@ -103,6 +103,7 @@ - #define SPINOR_OP_EN4B 0xb7 /* Enter 4-byte mode */ - #define SPINOR_OP_EX4B 0xe9 /* Exit 4-byte mode */ - #define SPINOR_OP_WREAR 0xc5 /* Write extended address register */ -+#define SPINOR_OP_RDXCR 0x15 /* Read extended configuration register */ - - /* Used for Spansion flashes only. */ - #define SPINOR_OP_BRWR 0x17 /* Bank register write */ -@@ -135,6 +136,7 @@ - - /* Configuration Register bits. */ - #define CR_QUAD_EN_SPAN BIT(1) /* Spansion Quad I/O */ -+#define XCR_DEF_4B_ADDR_MODE BIT(1) /* Winbond 4B mode default */ - - /* Status Register 2 bits. */ - #define SR2_QUAD_EN_BIT7 BIT(7) |