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【硬件交流】
RK3399 SPI的CLK电压不够
发表于 2021-1-18 14:55:29
浏览:8724
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我SPI设置的是32M的时钟 模式3 示波器测出来的CLK峰峰值太低是怎么回事?
&spi2 {
status = "okay";
max-freq = <48000000>;
ili9225G:ili9225@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "ilitek,ili9225";
reg = <0>;
spi-max-frequency = <32000000>;
spi-cpol;
spi-cpha;
bgr;
rotate = <90>;
fps = <30>;
buswidth = <8>;
dc-gpios = <&gpio4 2 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
debug = <7>;
};
};
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