On Wed, Oct 14, 2026 at 11:49:57AM -0600, Tom Rini wrote:
> On Wed, Oct 14, 2026 at 09:46:44AM +0200, Andreas Henriksson wrote:
> > On boards with >3GiB ram, we can end up with transfers above 4GiB
> > which is not allowed by SDHC driver.
> >
> > fsl_esdhc_imx.c: esdhc_setup_dma():
> > if (upper_32_bits(priv->dma_addr))
> > printf("Cannot use 64 bit addresses with SDMA\n");
> >
> > Tested on Toradex Verdin i.MX8M Plus SoM, where bootefi would not work
> > (with systemd-boot as efi application) and print the above message.
>
> Is this a driver limitation which should be fixed, or a hardware
> limitation that needs to be enforced by this Kconfig option?
As far as I understand it, this is a limitation in the (S)DMA design
of the SoC.
>
> --
> Tom
Regards,
Andreas Henriksson
