My problem was solved, when I decreased the max spi frequency to 1000000. So my final dts is here:
What this will cause on transfer speed, I don't know.
//This devicetree overlay is used for mcp2515 CAN HAT.
/dts-v1/;
/plugin/;
/ {
compatible = "rockchip,rockpi","rockchip,rk3399";
fragment@0 {
target = <&pinctrl>;
__overlay__ {
mcp2515_pins {
mcp2515_int_pin: mcp2515_int_pin {
rockchip,pins = <4 29 0 &pcfg_pull_none>;
};
};
};
};
fragment@1 {
target-path = "/";
__overlay__ {
can_mcp2515_osc: can-mcp2515-osc {
compatible = "fixed-clock";
clock-frequency = <16000000>;
#clock-cells = <0>;
};
};
};
fragment@2 {
target = <&spi1>;
__overlay__ {
status = "okay";
max-freq = <1000000>;
#address-cells = <1>;
#size-cells = <0>;
can_mcp2515: can-mcp2515@0 {
status = "okay";
compatible = "microchip,mcp2515";
reg = <0>;
interrupt-parent = <&gpio4>;
interrupts = <29 2>;
spi-max-frequency = <1000000>;
clocks = <&can_mcp2515_osc>;
vdd-supply = <&vcc3v3_sys>;
xceiver-supply = <&vcc3v3_sys>;
pinctrl-names = "default";
pinctrl-0 = <&mcp2515_int_pin>;
};
};
};
};
spi1-mcp2515-can0-overlay.dts
