[PATCH u-boot-marvell v2 2/2] arm: mvebu: turris_omnia: Reset the board immediately on DDR training failure

[Pali Rohár]

On Thursday 17 February 2022 13:54:43 Marek Behún wrote:
> From: Marek Behún <marek.behun at nic.cz>
> 
> The state of the current DDR training code for Armada 38x is such that
> we cannot be sure it will always train successfully - although after the
> last change we were yet unable to find a board that failed DDR training,
> from experience in the last 2 years we know that it is possible.
> 
> The experience also tells us that in many cases the board fails training
> only sometimes, and after a reset the training is successful.
> 
> Enable the new option that makes the board reset itself on DDR training
> failure immediately. Until now we called hang() in such a case, which
> meant that the board was reset by the MCU after 120 seconds.
> 
> Signed-off-by: Marek Behún <marek.behun at nic.cz>

Reviewed-by: Pali Rohár <pali at kernel.org>

> ---
>  configs/turris_omnia_defconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig
> index d6f70caeaf..010d69adcc 100644
> --- a/configs/turris_omnia_defconfig
> +++ b/configs/turris_omnia_defconfig
> @@ -11,6 +11,7 @@ CONFIG_NR_DRAM_BANKS=2
>  CONFIG_SYS_MEMTEST_START=0x00800000
>  CONFIG_SYS_MEMTEST_END=0x00ffffff
>  CONFIG_TARGET_TURRIS_OMNIA=y
> +CONFIG_DDR_RESET_ON_TRAINING_FAILURE=y
>  CONFIG_ENV_SIZE=0x10000
>  CONFIG_ENV_OFFSET=0xF0000
>  CONFIG_ENV_SECT_SIZE=0x10000
> -- 
> 2.34.1
>