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/* kernel/kernel/time/posix-timers.c */static struct k_clock posix_clocks[MAX_CLOCKS];/* kernel/kernel/time/alarmtimer.c */static struct rtc_device *rtcdev; static struct alarm_base { spinloc...

蓝牙：packages/apps/Settings/res/values-zh-rCN/strings.xml注释掉：packages/apps/Settings/AndroidManifest.xml 中的相关文件去掉与蓝牙相关的代码packages/apps/Settings/src/com/android/settings/Settings.javapa...

/system/build.prop文件中 ro.sf.hwrotation=0这里可以90、180、270修改后同步，重启，可调整默认旋转方向。镜像直接默认修改：device/rockchip/rk3399/build.prop 中 ro.sf.hwrotation=0 属性...

从kernel/drivers/i2c/busses/i2c-rockchip.c开始分析根据I2C总线模型，首先分配一个 rockchip_i2c_driver 结构体static const struct of_device_id rockchip_i2c_of_match[] = { { .compatible = "rockchip,rk30-i2c", .d...

背景：客户要求对应串口关系kernel/drivers/tty/tty_io.c涉及函数：static ssize_t tty_line_name(struct tty_driver *driver, int index, char *p)ssize_t i = 0;if (!strncmp(driver->name, "ttyS", 4) && (...

先看清楚供电电压：12V供电根据信号时序规范配置：数据时序： clock-frequency = <148500000>;显示正常。

/kernel/drivers/input/keyboard/rk_keys.c这个驱动程序使用的函数一览：/* devm_input_allocate_device - allocate managed input device @dev: device owning the input device being created Returns prepared s...