[flashrom] Erase fails with flashrom using mtd

[Sakthipriya M]

Hi,
We are using customised Elkhart lake board, when we tried to update BIOS using flashrom, following error is reported,  "linux_mtd_erase: MEMERASE ioctl call returned -1, error: Input/output error". But sometimes we could update BIOS successfully. Chip size is 16MB, Flashrom erases successfully till 6MB and fails then
Flashchip: Macronix MX25L12835F
OS: GNU/LINUX
Kernel: Tried in 6.12.5 and 6.14.2.
Ensured that MTD kernel configurations are enabled.
Flash chip is detected as "BIOS" in /dev/mtd0.

Thanks,
Sakthipriya M