This patch series aims to enable serial NOR flash on RZ/G2UL SMARC EVK.
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 pins, 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
Update partition table for spi-nor flash, so that we can flash bootloaders
in Linux by executing the below commands:
flash_erase /dev/mtd0 0 0
flash_erase /dev/mtd1 0 0
mtd_debug write /dev/mtd0 0 ${BL2_FILE_SIZE} ${BL2_IMAGE}
mtd_debug write /dev/mtd1 512 ${FIP_FILE_SIZE} ${FIP_IMAGE}
RFC->v1:
* Dropped patches related to set_iofv() callback
* Used Hi-Z state as the default for IOVF pin state.
* Enabled Serial NOR flash on RZ/G2UL SMARC EVK
* Updated partition table on RZ/{G2L,G2LC,V2L} SMARC EVK in order to
flash bootloader images from Linux.
RFC: https://lore.kernel.org/linux-renesas-soc/e8ed909b39b5a7de46a07d2b57c0393a@xxxxxxxx/T/#t
Biju Das (3):
memory: renesas-rpc-if: Use Hi-Z state as the default for IOVF pin
arm64: dts: renesas: rzg2ul-smarc-som: Enable serial NOR flash
arm64: dts: renesas: rz{g2l,g2lc}-smarc-som: Update partition table
for spi-nor flash
.../boot/dts/renesas/rzg2l-smarc-som.dtsi | 15 ++++--
.../boot/dts/renesas/rzg2lc-smarc-som.dtsi | 15 ++++--
.../boot/dts/renesas/rzg2ul-smarc-som.dtsi | 48 +++++++++++++++++++
drivers/memory/renesas-rpc-if.c | 2 +-
4 files changed, 71 insertions(+), 9 deletions(-)
--
2.43.0
