Hi,
On 9/29/26 17:43, Marek Vasut wrote:
> On 9/30/26 1:07 AM, E Shattow wrote:
>> Platform drivers and hardware for StarFive JH-7110 SoC are not capable of
>> DMA access above 4GB
>
> 4 GiB
Yes, I agree.
>
>> . This was previously a problem for MMC access then
>> resolved by a workaround, since reverted in a3075db94d49 ("lmb: Reinstate
>> access to memory above ram_top"). The symptom of this is EFI boot failure
>> of GRUB from EFI System Partition on USB MSC with a starfive_visionfive2
>> board target that has the on-chip Cadence USB, tested with Pine64 Star64.
>>
>> Restore the workaround with a dependency on LMB_LIMIT_DMA_BELOW_RAM_TOP.
>>
>> Signed-off-by: E Shattow <[email protected]>
>
> Reviewed-by: Marek Vasut <[email protected]>
Looks good to me as suggested.
Thanks, -E
