请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。
器件型号：PROCESSOR-SDK-AM69 主题中讨论的其他器件：SK-AM69
工具与软件：
嗨、团队：
原理图访问链接： https://www.ti.com.cn/cn/lit/zip/sprr466、the该电路板的 PCB 名称是 PROC154E3、我们根据此设计更改了扩展器上的 GPIO 顺序
文件 k3-i784s4-evm.dts 中的 GPIO 扩展名、SDK 版本为 09_01_00_06 。但是、原理图中只有一个扩展器、地址为0x21。
在这种情况下、如何找到 DTS 中 GPIO 引脚与原理图中 GPIO 引脚之间的对应关系
&main_i2c0 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&main_i2c0_pins_default>;
clock-frequency = <400000>;
exp1: gpio@20 {
compatible = "ti,tca6416";
reg = <0x20>;
gpio-controller;
#gpio-cells = <2>;
gpio-line-names = "PCIE1_2L_MODE_SEL", "PCIE1_4L_PERSTZ", "PCIE1_2L_RC_RSTZ",
"PCIE1_2L_EP_RST_EN", "PCIE0_4L_MODE_SEL", "PCIE0_4L_PERSTZ",
"PCIE0_4L_RC_RSTZ", "PCIE0_4L_EP_RST_EN", "PCIE1_4L_PRSNT#",
"PCIE0_4L_PRSNT#", "CDCI1_OE1/OE4", "CDCI1_OE2/OE3",
"AUDIO_MUX_SEL", "EXP_MUX2", "EXP_MUX3", "GESI_EXP_PHY_RSTZ";
};
exp2: gpio@22 {
compatible = "ti,tca6424";
reg = <0x22>;
gpio-controller;
#gpio-cells = <2>;
gpio-line-names = "R_GPIO_RGMII1_RST", "ENET2_I2CMUX_SEL", "GPIO_USD_PWR_EN",
"USBC_PWR_EN", "USBC_MODE_SEL1", "USBC_MODE_SEL0",
"GPIO_LIN_EN", "R_CAN_STB", "CTRL_PM_I2C_OE#",
"ENET2_EXP_PWRDN", "ENET2_EXP_SPARE2", "CDCI2_RSTZ",
"USB2.0_MUX_SEL", "CANUART_MUX_SEL0", "CANUART_MUX2_SEL1",
"CANUART_MUX1_SEL1", "ENET1_EXP_PWRDN", "ENET1_EXP_RESETZ",
"ENET1_I2CMUX_SEL", "ENET1_EXP_SPARE2", "ENET2_EXP_RESETZ",
"USER_INPUT1", "USER_LED1", "USER_LED2";
};
};
期待您的回复、谢谢
