| Message ID | 20240830203014.199326-2-biju.das.jz@bp.renesas.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | Enable serial NOR flash on RZ/G2UL SMARC EVK | expand |
On Fri, 30 Aug 2024 21:30:03 +0100, Biju Das wrote: > 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. > > [...] Applied, thanks! [1/3] memory: renesas-rpc-if: Use Hi-Z state as the default setting for IOVF pins https://git.kernel.org/krzk/linux-mem-ctrl/c/84d1078af52f6a099267fccfb1dda602ac8b66d0 Best regards,
diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c index 3167826b236a..7fbd36fa1a1b 100644 --- a/drivers/memory/renesas-rpc-if.c +++ b/drivers/memory/renesas-rpc-if.c @@ -367,7 +367,7 @@ int rpcif_hw_init(struct device *dev, bool hyperflash) regmap_update_bits(rpc->regmap, RPCIF_CMNCR, RPCIF_CMNCR_MOIIO(3) | RPCIF_CMNCR_IOFV(3) | RPCIF_CMNCR_BSZ(3), - RPCIF_CMNCR_MOIIO(1) | RPCIF_CMNCR_IOFV(2) | + RPCIF_CMNCR_MOIIO(1) | RPCIF_CMNCR_IOFV(3) | RPCIF_CMNCR_BSZ(hyperflash ? 1 : 0)); else regmap_update_bits(rpc->regmap, RPCIF_CMNCR,
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 <biju.das.jz@bp.renesas.com> --- v2->v2 resnd: * Rebased to next. RFC->v2: * New patch. --- drivers/memory/renesas-rpc-if.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)