Although the max DMA size supported by the hardware register is 22 bits (or 4M), the Linux driver for this device only supports transfers of up to 2M. On a device with 8M total memory, I don't think it will make too much of a difference.

Reported-by: Damien Le Moal Damien.LeMoal@wdc.com Signed-off-by: Sean Anderson seanga2@gmail.com ---

arch/riscv/dts/k210.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/dts/k210.dtsi b/arch/riscv/dts/k210.dtsi index 84cff51c36..2e1e2683c1 100644 --- a/arch/riscv/dts/k210.dtsi +++ b/arch/riscv/dts/k210.dtsi @@ -199,8 +199,8 @@ dma-channels = <6>; snps,dma-masters = <2>; snps,data-width = <5>; - snps,block-size = <0x400000 0x400000 0x400000 - 0x400000 0x400000 0x400000>; + snps,block-size = <0x200000 0x200000 0x200000 + 0x200000 0x200000 0x200000>; snps,axi-max-burst-len = <256>; status = "disabled"; };