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    SubjectRe: [PATCH] mmc: sdhci-xenon: Fix 2G limitation on AC5 SoC
    On Thu, Aug 18, 2022 at 03:07:40PM +0300, Vadym Kochan wrote:
    > It works with the following changes:
    >
    > #1 dma-ranges = <0x0 0x0 0x2 0x0 0x0 0x80000000>;
    >
    > #3 swiotlb="force"
    >
    > Is it OK to force the memory allocation from the start for the swiotlb ?

    It should be ok, but isn't really optimal.

    I wonder if we should just allow DT to specify the swiotlb buffer
    location. Basically have yet another RESERVEDMEM_OF_DECLARE variant
    for it, which shouldn't be all that much work except for figuring
    out the interaction with the various kernel command line options.

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