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Android 7.1 复用 uart4
发表于 2017-6-14 15:49:12
浏览：9134
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回复：1
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楼主
按照官方wiki，修改完成，在串口不显示ttyS4
aliases {
...
serial0 = &uart0;
serial1 = &uart1;
serial2 = &uart2;
serial3 = &uart3;
serial4 = &uart4;
};
uart4: serial@ff370000 {
compatible = "rockchip,rk3399-uart", "snps,dw-apb-uart";
reg = <0x0 0xff370000 0x0 0x100>;
clocks = <&pmucru SCLK_UART4_PMU>, <&pmucru PCLK_UART4_PMU>;
clock-names = "baudclk", "apb_pclk";
interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH 0>;
reg-shift = <2>;
reg-io-width = <4>;
pinctrl-names = "default";
pinctrl-0 = <&uart4_xfer>;
status = "disabled";
};
uart4 {
uart4_xfer: uart4-xfer {
rockchip,pins =
<1 7 RK_FUNC_1 &pcfg_pull_up>,
<1 8 RK_FUNC_1 &pcfg_pull_none>;
};
};
&uart4 {
current-speed = <9600>;
no-loopback-test;
status = "okay";
};
&spidev0 {
status = "disabled";
};
就是这个步骤 |
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