VHV gpio is connected to MCU and only on updated board design. Without it eFUSE programming does not work. Omnia MCU driver exports this GPIO to U-Boot under name mcu_56 and only when it is supported by MCU. So U-Boot fuse command refuse eFUSE programming on older board design when VHV gpio is not available.
We tested that Armada 385 without connected VHV gpio can do eFUSE programming but only for some bits and only sometimes - it is unstable. And better to be disabled on older board design without VHV gpio support.
Signed-off-by: Pali Rohár pali@kernel.org --- configs/turris_omnia_defconfig | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig index ba635feb44b2..01dee5472200 100644 --- a/configs/turris_omnia_defconfig +++ b/configs/turris_omnia_defconfig @@ -10,6 +10,8 @@ CONFIG_NR_DRAM_BANKS=2 CONFIG_TARGET_TURRIS_OMNIA=y CONFIG_DDR_RESET_ON_TRAINING_FAILURE=y CONFIG_MVEBU_EFUSE=y +CONFIG_MVEBU_EFUSE_VHV_GPIO="mcu_56" +CONFIG_MVEBU_EFUSE_VHV_GPIO_ACTIVE_LOW=y CONFIG_ENV_SIZE=0x10000 CONFIG_ENV_OFFSET=0xF0000 CONFIG_ENV_SECT_SIZE=0x10000