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| author | Biju Das <[email protected]> | 2024-08-30 21:30:03 +0100 |
|---|---|---|
| committer | Krzysztof Kozlowski <[email protected]> | 2024-08-31 07:30:32 +0200 |
| commit | 84d1078af52f6a099267fccfb1dda602ac8b66d0 (patch) | |
| tree | 3178048a2e13c00d0f4dccf9c0d7c47170fc4e02 /rust/helpers.c | |
| parent | ff390189b7f2cfa20c644bc58b4462b5e2621838 (diff) | |
memory: renesas-rpc-if: Use Hi-Z state as the default setting for IOVF pins
The RZ/{G2L,G2LC,V2L} SMARC EVK uses Micron MT25QU412A flash and RZ/G2UL
SMARC EVK uses Renesas AT25QL128A flash. With current pin setting for
IOVF pin, 4-bit flash write fails for AT25QL128A flash. Use Hi-Z state
as the default for IOVF pin, so that spi controller driver in linux will
be independent of flash type.
To support this, during board production, the bit 4 of the NV config
register must be cleared by the bootloader for Micron flash.
Output from u-boot after clearing bit4 of NVCR register.
=> renesas_micron_flash_nvcr
SF: Detected mt25qu512a with page size 256 Bytes, erase size 64 KiB, total 64 MiB
NVCR=0xef
Signed-off-by: Biju Das <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Diffstat (limited to 'rust/helpers.c')
0 files changed, 0 insertions, 0 deletions