diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/004-mtd-spi-nor-from-3.20.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-3.18/004-mtd-spi-nor-from-3.20.patch | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/004-mtd-spi-nor-from-3.20.patch b/target/linux/bcm53xx/patches-3.18/004-mtd-spi-nor-from-3.20.patch new file mode 100644 index 0000000..e2ef75e --- /dev/null +++ b/target/linux/bcm53xx/patches-3.18/004-mtd-spi-nor-from-3.20.patch @@ -0,0 +1,116 @@ +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -538,6 +538,7 @@ static const struct spi_device_id spi_no + /* GigaDevice */ + { "gd25q32", INFO(0xc84016, 0, 64 * 1024, 64, SECT_4K) }, + { "gd25q64", INFO(0xc84017, 0, 64 * 1024, 128, SECT_4K) }, ++ { "gd25q128", INFO(0xc84018, 0, 64 * 1024, 256, SECT_4K) }, + + /* Intel/Numonyx -- xxxs33b */ + { "160s33b", INFO(0x898911, 0, 64 * 1024, 32, 0) }, +@@ -564,14 +565,14 @@ static const struct spi_device_id spi_no + { "mx66l1g55g", INFO(0xc2261b, 0, 64 * 1024, 2048, SPI_NOR_QUAD_READ) }, + + /* Micron */ +- { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, 0) }, +- { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, 0) }, +- { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, 0) }, +- { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, 0) }, +- { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K) }, +- { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K) }, +- { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, USE_FSR) }, +- { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, USE_FSR) }, ++ { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) }, ++ { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, SPI_NOR_QUAD_READ) }, ++ { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, SPI_NOR_QUAD_READ) }, ++ { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, SPI_NOR_QUAD_READ) }, ++ { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_QUAD_READ) }, ++ { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, ++ { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, ++ { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, + + /* PMC */ + { "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) }, +@@ -896,6 +897,45 @@ static int spansion_quad_enable(struct s + return 0; + } + ++static int micron_quad_enable(struct spi_nor *nor) ++{ ++ int ret; ++ u8 val; ++ ++ ret = nor->read_reg(nor, SPINOR_OP_RD_EVCR, &val, 1); ++ if (ret < 0) { ++ dev_err(nor->dev, "error %d reading EVCR\n", ret); ++ return ret; ++ } ++ ++ write_enable(nor); ++ ++ /* set EVCR, enable quad I/O */ ++ nor->cmd_buf[0] = val & ~EVCR_QUAD_EN_MICRON; ++ ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1, 0); ++ if (ret < 0) { ++ dev_err(nor->dev, "error while writing EVCR register\n"); ++ return ret; ++ } ++ ++ ret = spi_nor_wait_till_ready(nor); ++ if (ret) ++ return ret; ++ ++ /* read EVCR and check it */ ++ ret = nor->read_reg(nor, SPINOR_OP_RD_EVCR, &val, 1); ++ if (ret < 0) { ++ dev_err(nor->dev, "error %d reading EVCR\n", ret); ++ return ret; ++ } ++ if (val & EVCR_QUAD_EN_MICRON) { ++ dev_err(nor->dev, "Micron EVCR Quad bit not clear\n"); ++ return -EINVAL; ++ } ++ ++ return 0; ++} ++ + static int set_quad_mode(struct spi_nor *nor, struct flash_info *info) + { + int status; +@@ -908,6 +948,13 @@ static int set_quad_mode(struct spi_nor + return -EINVAL; + } + return status; ++ case CFI_MFR_ST: ++ status = micron_quad_enable(nor); ++ if (status) { ++ dev_err(nor->dev, "Micron quad-read not enabled\n"); ++ return -EINVAL; ++ } ++ return status; + default: + status = spansion_quad_enable(nor); + if (status) { +--- a/include/linux/mtd/spi-nor.h ++++ b/include/linux/mtd/spi-nor.h +@@ -56,6 +56,10 @@ + /* Used for Spansion flashes only. */ + #define SPINOR_OP_BRWR 0x17 /* Bank register write */ + ++/* Used for Micron flashes only. */ ++#define SPINOR_OP_RD_EVCR 0x65 /* Read EVCR register */ ++#define SPINOR_OP_WD_EVCR 0x61 /* Write EVCR register */ ++ + /* Status Register bits. */ + #define SR_WIP 1 /* Write in progress */ + #define SR_WEL 2 /* Write enable latch */ +@@ -67,6 +71,9 @@ + + #define SR_QUAD_EN_MX 0x40 /* Macronix Quad I/O */ + ++/* Enhanced Volatile Configuration Register bits */ ++#define EVCR_QUAD_EN_MICRON 0x80 /* Micron Quad I/O */ ++ + /* Flag Status Register bits */ + #define FSR_READY 0x80 + |