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修改dts配置文件,以som 256的camera为例,查看实际硬件连接的是i2C3:
i2c_gpio0 { status = "disabled"; hm1055@24 { compatible = "himax,hm1055"; reg = <0x24>; pinctrl-names = "default"; pinctrl-0 = < pinctrl_ccap0>; clocks = < clk CCAP0_GATE>; clock-names = "xclk"; reset-gpios = < gpiom 1 GPIO_ACTIVE_LOW>; /* PM1 */ powerdown-gpios = < gpiok 8 GPIO_ACTIVE_HIGH>; /* PK8 */ port { hm1055_0: endpoint { remote-endpoint = < ccap0_1>; }; }; }; }; 修改为: i2c3 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = < pinctrl_i2c3>; hm1055@24 { compatible = "himax,hm1055"; reg = <0x24>; pinctrl-names = "default"; pinctrl-0 = < pinctrl_ccap0>; clocks = < clk CCAP0_GATE>; clock-names = "xclk"; reset-gpios = < gpiom 1 GPIO_ACTIVE_LOW>; /* PM1 */ powerdown-gpios = < gpiok 8 GPIO_ACTIVE_HIGH>; /* PK8 */ port { hm1055_0: endpoint { remote-endpoint = < ccap0_1>; }; }; }; }; 然后增加i2c3相关配置: i2c3 { pinctrl_i2c3: i2c3grp{ nuvoton,pins = , ; }; }; |
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