sim卡 热拔插_sim卡热插拔是什么

大家好，又见面了，我是你们的朋友全栈君。 1.device/prize/pri6737t_66_m0/ProjectConfig.mk

关闭：MTK_SIM_HOT_SWAP = no

打开：MTK_SIM_HOT_SWAP = yes

2.kernel-3.18/arch/arm64/boot/dts/pri6737t_66_m0.dts

关闭：

&mmc1 {

clk_src = /bits/ 8 <MSDC30_CLKSRC_200MHZ>;

bus-width = <4>;

max-frequency = <200000000>;

msdc-sys-suspend;

cap-sd-highspeed;

sd-uhs-sdr12;

sd-uhs-sdr25;

sd-uhs-sdr50;

sd-uhs-sdr104;

sd-uhs-ddr50;

pinctl = <&mmc1_pins_default>;

pinctl_sdr104 = <&mmc1_pins_sdr104>;

pinctl_sdr50 = <&mmc1_pins_sdr50>;

pinctl_ddr50 = <&mmc1_pins_ddr50>;

register_setting = <&mmc1_register_setting_default>;

host_function = /bits/ 8 <MSDC_SD>;

cd_level = /bits/ 8 <MSDC_CD_LOW>;

cd-gpios = <&pio 9 0>;

non-removable;

status = “okay”;

};

打开：

&mmc1 {

clk_src = /bits/ 8 <MSDC30_CLKSRC_200MHZ>;

bus-width = <4>;

max-frequency = <200000000>;

msdc-sys-suspend;

cap-sd-highspeed;

sd-uhs-sdr12;

sd-uhs-sdr25;

sd-uhs-sdr50;

sd-uhs-sdr104;

sd-uhs-ddr50;

pinctl = <&mmc1_pins_default>;

pinctl_sdr104 = <&mmc1_pins_sdr104>;

pinctl_sdr50 = <&mmc1_pins_sdr50>;

pinctl_ddr50 = <&mmc1_pins_ddr50>;

register_setting = <&mmc1_register_setting_default>;

host_function = /bits/ 8 <MSDC_SD>;

cd_level = /bits/ 8 <MSDC_CD_LOW>;

cd-gpios = <&pio 9 0>;

status = “okay”;

};

3.需要更新modem

热拨插和非热拨插不是同一版modem

4.测试：

不插卡开机，然后插入sim和T卡不识别，这就是没有热拨插 如果打开关闭了飞行模式，后面识卡，这是正常的，这也是没有热插拔

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