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mtd: spi-nor: Add support for Infineon s25fs256t

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Infineon S25FS256T is 256Mbit Quad SPI NOR flash. The key features and
differences comparing to other Spansion/Cypress flash familes are:
  - 4-byte address mode by factory default
  - Quad mode is enabled by factory default
  - Supports mixture of 128KB and 64KB sectors by OTP configuration
    (this patch supports uniform 128KB only)

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Takahiro Kuwano
2022-12-19 10:28:21 +09:00
committed by Jagan Teki
parent eadaadbb8f
commit 87a6d86571
3 changed files with 41 additions and 9 deletions
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include/linux/mtd/spi-nor.h
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@@ -141,6 +141,7 @@
#define SPINOR_REG_ADDR_STR1V 0x00800000
#define SPINOR_REG_ADDR_CFR1V 0x00800002
#define SPINOR_REG_ADDR_CFR3V 0x00800004
#define SPINOR_REG_ADDR_ARCFN 0x00000006
#define CFR3V_UNHYSA BIT(3) /* Uniform sectors or not */
#define CFR3V_PGMBUF BIT(4) /* Program buffer size */