Using udmabuf on linux zynq7020

[lone-boy]

Hello, I want to use udmabuf for dma like function. The ddr on the PL side allocates a section of space, the PL writes data into it, and then the PS section reads it.
But when I write device tree like this
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
image_buf0: image_buf@0 {
compatible = "shared-dma-pool";
reusable;
reg = <0x0 0x32000000 0x0 0x33000000>;
alignment = <0x0 0x1000>;
label = "image_buf0";
};
};

udmabuf@0{
	compatible = "ikwzm,u-dma-buf";
	device-name = "udmabuf0";
	size = <0x01000000>;
	memory-region = <&image_buf0>;
};

dmesg | grep udma
u-dma-buf udmabuf@0: of_reserved_mem_device_init failed. return=-22
u-dma-buf udmabuf@0: driver probe failed. return=-22
u-dma-buf: probe of udmabuf@0 failed with error -22

[KAWAZOME Ichiro]

Thanks for the issue.

I assume reserved-memory initialization has failed, please check dmesg.

[KAWAZOME Ichiro]

Please see issue #45.

[lone-boy]

That's really nice, thank you very much