各位同学，本人在AIO3399J开发板上调试MCP2518FD，DTS配制了SPI2，但SPI2时钟只输出一个高电平。
用SPI2_TEST测试程序，SPI2读写又是正常的。请问这个时钟要怎么设置？拜托各位大神了。
&spi2 {
status = “okay”;
//max-frequency = <48000000>;
can0: can@0 {
compatible = "microchip,mcp2515";
pinctrl-name = "default";
pinctrl-0 = <&can0_pins>;
reg = <0>;
clocks = <&clk16m>;
spi-max-frequency = <10000000>;
interrupt-parent = <&gpio4>;
interrupts = <28 IRQ_TYPE_EDGE_FALLING>;
can0_pins: can0-pins {
rockchip,pins = <4 28 RK_FUNC_GPIO &pcfg_pull_none>;
};
clk16m: clk16m {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <16000000>;
};
};
/*
- sp_test@00 {
-
compatible = "rockchip,spi_test_bus0_cs0"; -
id = <0>; -
reg = <0>; -
spi-max-frequency = <4000000>; -
status = "okay"; - };
- sp_test@01 {
-
compatible = "rockchip,spi_test_bus0_cs1"; -
id = <1>; -
reg = <1>; -
spi-max-frequency = <4000000>; - };
*/
};