diff options
Diffstat (limited to 'drivers/mtd/spi/spi_flash.c')
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 62 |
1 files changed, 2 insertions, 60 deletions
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index b902540..2e378dc 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -112,37 +112,6 @@ static int write_cr(struct spi_flash *flash, u8 wc) } #endif -#ifdef CONFIG_SPI_FLASH_STMICRO -static int read_evcr(struct spi_flash *flash, u8 *evcr) -{ - int ret; - const u8 cmd = CMD_READ_EVCR; - - ret = spi_flash_read_common(flash, &cmd, 1, evcr, 1); - if (ret < 0) { - debug("SF: error reading EVCR\n"); - return ret; - } - - return 0; -} - -static int write_evcr(struct spi_flash *flash, u8 evcr) -{ - u8 cmd; - int ret; - - cmd = CMD_WRITE_EVCR; - ret = spi_flash_write_common(flash, &cmd, 1, &evcr, 1); - if (ret < 0) { - debug("SF: error while writing EVCR register\n"); - return ret; - } - - return 0; -} -#endif - #ifdef CONFIG_SPI_FLASH_BAR static int write_bar(struct spi_flash *flash, u32 offset) { @@ -894,34 +863,6 @@ static int spansion_quad_enable(struct spi_flash *flash) } #endif -#ifdef CONFIG_SPI_FLASH_STMICRO -static int micron_quad_enable(struct spi_flash *flash) -{ - u8 qeb_status; - int ret; - - ret = read_evcr(flash, &qeb_status); - if (ret < 0) - return ret; - - if (!(qeb_status & STATUS_QEB_MICRON)) - return 0; - - ret = write_evcr(flash, qeb_status & ~STATUS_QEB_MICRON); - if (ret < 0) - return ret; - - /* read EVCR and check it */ - ret = read_evcr(flash, &qeb_status); - if (!(ret >= 0 && !(qeb_status & STATUS_QEB_MICRON))) { - printf("SF: Micron EVCR Quad bit not clear\n"); - return -EINVAL; - } - - return ret; -} -#endif - static const struct spi_flash_info *spi_flash_read_id(struct spi_flash *flash) { int tmp; @@ -962,7 +903,8 @@ static int set_quad_mode(struct spi_flash *flash, #endif #ifdef CONFIG_SPI_FLASH_STMICRO case SPI_FLASH_CFI_MFR_STMICRO: - return micron_quad_enable(flash); + debug("SF: QEB is volatile for %02x flash\n", JEDEC_MFR(info)); + return 0; #endif default: printf("SF: Need set QEB func for %02x flash\n", |