diff options
Diffstat (limited to 'drivers/mtd/spi-nor/spansion.c')
| -rw-r--r-- | drivers/mtd/spi-nor/spansion.c | 89 |
1 files changed, 69 insertions, 20 deletions
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c index 519fdad79a19..5e021e20497b 100644 --- a/drivers/mtd/spi-nor/spansion.c +++ b/drivers/mtd/spi-nor/spansion.c @@ -14,15 +14,26 @@ #define SPINOR_OP_CLSR 0x30 /* Clear status register 1 */ #define SPINOR_OP_RD_ANY_REG 0x65 /* Read any register */ #define SPINOR_OP_WR_ANY_REG 0x71 /* Write any register */ -#define SPINOR_REG_CYPRESS_STR1V 0x00800000 -#define SPINOR_REG_CYPRESS_CFR1V 0x00800002 +#define SPINOR_REG_CYPRESS_VREG 0x00800000 +#define SPINOR_REG_CYPRESS_STR1 0x0 +#define SPINOR_REG_CYPRESS_STR1V \ + (SPINOR_REG_CYPRESS_VREG + SPINOR_REG_CYPRESS_STR1) +#define SPINOR_REG_CYPRESS_CFR1 0x2 +#define SPINOR_REG_CYPRESS_CFR1V \ + (SPINOR_REG_CYPRESS_VREG + SPINOR_REG_CYPRESS_CFR1) #define SPINOR_REG_CYPRESS_CFR1_QUAD_EN BIT(1) /* Quad Enable */ -#define SPINOR_REG_CYPRESS_CFR2V 0x00800003 +#define SPINOR_REG_CYPRESS_CFR2 0x3 +#define SPINOR_REG_CYPRESS_CFR2V \ + (SPINOR_REG_CYPRESS_VREG + SPINOR_REG_CYPRESS_CFR2) #define SPINOR_REG_CYPRESS_CFR2_MEMLAT_11_24 0xb #define SPINOR_REG_CYPRESS_CFR2_ADRBYT BIT(7) -#define SPINOR_REG_CYPRESS_CFR3V 0x00800004 +#define SPINOR_REG_CYPRESS_CFR3 0x4 +#define SPINOR_REG_CYPRESS_CFR3V \ + (SPINOR_REG_CYPRESS_VREG + SPINOR_REG_CYPRESS_CFR3) #define SPINOR_REG_CYPRESS_CFR3_PGSZ BIT(4) /* Page size. */ -#define SPINOR_REG_CYPRESS_CFR5V 0x00800006 +#define SPINOR_REG_CYPRESS_CFR5 0x6 +#define SPINOR_REG_CYPRESS_CFR5V \ + (SPINOR_REG_CYPRESS_VREG + SPINOR_REG_CYPRESS_CFR5) #define SPINOR_REG_CYPRESS_CFR5_BIT6 BIT(6) #define SPINOR_REG_CYPRESS_CFR5_DDR BIT(1) #define SPINOR_REG_CYPRESS_CFR5_OPI BIT(0) @@ -301,17 +312,7 @@ static int cypress_nor_set_addr_mode_nbytes(struct spi_nor *nor) return 0; } -/** - * cypress_nor_get_page_size() - Get flash page size configuration. - * @nor: pointer to a 'struct spi_nor' - * - * The BFPT table advertises a 512B or 256B page size depending on part but the - * page size is actually configurable (with the default being 256B). Read from - * CFR3V[4] and set the correct size. - * - * Return: 0 on success, -errno otherwise. - */ -static int cypress_nor_get_page_size(struct spi_nor *nor) +static int cypress_nor_get_page_size_single_chip(struct spi_nor *nor) { struct spi_mem_op op = CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes, @@ -331,6 +332,54 @@ static int cypress_nor_get_page_size(struct spi_nor *nor) return 0; } + +static int cypress_nor_get_page_size_mcp(struct spi_nor *nor) +{ + struct spi_mem_op op = + CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes, + 0, 0, nor->bouncebuf); + struct spi_nor_flash_parameter *params = nor->params; + int ret; + u8 i; + + /* + * Use the minimum common page size configuration. Programming 256-byte + * under 512-byte page size configuration is safe. + */ + params->page_size = 256; + for (i = 0; i < params->n_dice; i++) { + op.addr.val = params->vreg_offset[i] + SPINOR_REG_CYPRESS_CFR3; + + ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto); + if (ret) + return ret; + + if (!(nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR3_PGSZ)) + return 0; + } + + params->page_size = 512; + + return 0; +} + +/** + * cypress_nor_get_page_size() - Get flash page size configuration. + * @nor: pointer to a 'struct spi_nor' + * + * The BFPT table advertises a 512B or 256B page size depending on part but the + * page size is actually configurable (with the default being 256B). Read from + * CFR3V[4] and set the correct size. + * + * Return: 0 on success, -errno otherwise. + */ +static int cypress_nor_get_page_size(struct spi_nor *nor) +{ + if (nor->params->n_dice) + return cypress_nor_get_page_size_mcp(nor); + return cypress_nor_get_page_size_single_chip(nor); +} + static void cypress_nor_ecc_init(struct spi_nor *nor) { /* @@ -408,7 +457,7 @@ s25hx_t_post_bfpt_fixup(struct spi_nor *nor, /* Replace Quad Enable with volatile version */ nor->params->quad_enable = cypress_nor_quad_enable_volatile; - return cypress_nor_get_page_size(nor); + return 0; } static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor) @@ -434,7 +483,7 @@ static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor) } } - return 0; + return cypress_nor_get_page_size(nor); } static void s25hx_t_late_init(struct spi_nor *nor) @@ -494,7 +543,7 @@ static int s28hx_t_post_sfdp_fixup(struct spi_nor *nor) */ nor->params->rdsr_addr_nbytes = 4; - return 0; + return cypress_nor_get_page_size(nor); } static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor, @@ -507,7 +556,7 @@ static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor, if (ret) return ret; - return cypress_nor_get_page_size(nor); + return 0; } static void s28hx_t_late_init(struct spi_nor *nor) |