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riscv: k210: Reduce DMA block size

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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>
Reviewed-by: Rick Chen <rick@andestech.com>
This commit is contained in:
Sean Anderson 2020-10-12 14:18:15 -04:00 committed by Andes
parent 32cef69da0
commit 963911e9e1
1 changed files with 2 additions and 2 deletions
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4
arch/riscv/dts/k210.dtsi
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@ -200,8 +200,8 @@
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";
};