mtd: spi-nor-core: Add Cypress manufacturer ID in set_4byte
Cypress chips support SPINOR_OP_EN4B(B7h) to enable 4-byte addressing mode. Cypress chips support B8h to disable 4-byte addressing mode instead of SPINOR_OP_EX4B(E9h). This patch defines new opcode and updates set_4byte() to support enable/disable 4-byte addressing mode for Cypress chips. Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
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@ -662,6 +662,9 @@ static int set_4byte(struct spi_nor *nor, const struct flash_info *info,
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}
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return status;
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case SNOR_MFR_CYPRESS:
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cmd = enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B_CYPRESS;
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return nor->write_reg(nor, cmd, NULL, 0);
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default:
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/* Spansion style */
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nor->cmd_buf[0] = enable << 7;
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@ -123,6 +123,7 @@
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#define SPINOR_OP_BRWR 0x17 /* Bank register write */
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#define SPINOR_OP_BRRD 0x16 /* Bank register read */
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#define SPINOR_OP_CLSR 0x30 /* Clear status register 1 */
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#define SPINOR_OP_EX4B_CYPRESS 0xB8 /* Exit 4-byte mode */
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#define SPINOR_OP_RDAR 0x65 /* Read any register */
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#define SPINOR_OP_WRAR 0x71 /* Write any register */
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#define SPINOR_REG_ADDR_STR1V 0x00800000
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